Fits 2011-2021 Subaru Impreza WRX, Impreza WRX STI, WRX, and WRX STI (2.0L / 2.5L).

The MBRP Armor Pro Series exhaust system delivers a mellow, performance-oriented tone while significantly optimizing exhaust flow. Engineered from mandrel-bent T304 stainless steel—the most durable grade available—this 2.5-inch dual split rear exit system is built to withstand extreme conditions and road salt. By replacing restrictive factory piping with smooth, mandrel-bent tubing, this system ensures there is no rippling in the bends, which reduces backpressure and exhaust gas temperatures (EGTs) for improved throttle response.

• Crafted from premium T304 stainless steel for maximum corrosion resistance and easy maintenance
• 2.5-inch mandrel-bent tubing for consistent flow and increased performance
• Dual split rear exit configuration with included 3.5-inch polished stainless steel tips
• Direct bolt-on design utilizes OEM hangers for a straightforward installation
• Mellow exhaust note offers a deeper sound without overwhelming cabin drone
• Lifetime Warranty from MBRP

Fits 2021-2026 Hyundai Elantra (N Line).

The MBRP Armor Lite Series axle-back exhaust system is engineered for drivers seeking a performance sound and increased flow without the premium price tag of stainless steel. Constructed from heavy-gauge aluminized steel, this 3-inch system is an ideal choice for dry climates and budget-conscious builds. The mandrel-bent tubing ensures consistent diameter through every curve, minimizing backpressure and allowing your engine to breathe more efficiently for improved performance.

This single rear-exit system provides an enriched, moderate exhaust tone that distinguishes your N Line from the factory trim. The kit is designed for a straightforward bolt-on installation and includes all necessary hardware and two mirror-polished 4-inch tips for a complete visual and audible upgrade.

• Heavy-gauge aluminized steel construction resists dings and dents
• 3-inch mandrel-bent tubing for maximum exhaust flow and reduced turbulence
• Includes two 4-inch OD dual-outlet mirror-polished tips
• Enhanced moderate exhaust tone for a sportier profile
• Simple bolt-on installation with all required clamps included

Fits 2021-2026 Hyundai Elantra N Line.

Upgrade the acoustic profile and aesthetic of your vehicle with the MBRP Armor Pro Series axle-back exhaust system. Engineered for maximum durability, this system is constructed from T304 stainless steel, making it the ideal choice for vehicles operated in extreme conditions where corrosion resistance is paramount. The 3-inch mandrel-bent tubing ensures smooth, unrestricted exhaust flow by eliminating rippling in the bends, allowing your engine to breathe more efficiently.

This rear-exit system delivers an enriched, moderate exhaust tone that provides a performance presence without being overwhelming. The installation is a straightforward bolt-on process that utilizes factory mounting points and includes all necessary hardware. To complete the look, the system features dual 4-inch OD carbon fiber tips for a high-end, aggressive finish.

• Series: Armor Pro
• Material: T304 Stainless Steel
• Tubing Diameter: 3-inch
• Tip Size: Dual 4-inch Outer Diameter (OD)
• Tip Material: Carbon Fiber
• Exit Style: Dual Rear Exit
• Tone: Enhanced Moderate Sound Profile
• Installation: Direct Bolt-On
• Hardware: Clamps Included

Fits 2022-2024 Kia Forte GT and GT-Line models.

The MBRP Armor Lite Series axle-back exhaust system is engineered for the enthusiast seeking a significant upgrade in sound and exhaust flow without the premium price tag of stainless steel. Constructed from heavy-gauge aluminized steel, this 2.5-inch system is an ideal choice for vehicles in dry climates, offering high resistance to dings and dents from road debris. Each system features mandrel-bent tubing to eliminate internal restrictions and rippling, resulting in up to a 47% increase in exhaust flow over the factory setup.

This bolt-on upgrade utilizes the original vehicle hangers for a straightforward installation that improves throttle response and reduces exhaust gas temperatures. The system is finished with quad mirror-polished stainless steel tips, providing a refined, aggressive appearance to the rear of your Kia Forte.

• 2.5-inch mandrel-bent aluminized steel tubing for maximum flow
• Quad mirror-polished stainless steel tips included
• Direct bolt-on installation using OEM hangers
• Up to 47% flow increase over stock
• Enhanced, mellow exhaust tone
• Designed specifically for the 2022-2024 Kia Forte GT and GT-Line

Fits 2022-2024 Kia Forte GT (1.6L).

The MBRP Armor Pro Series axle-back exhaust system is engineered for the Kia Forte GT enthusiast seeking maximum durability and a refined, aggressive tone. Constructed from premium T304 stainless steel, this 2.5-inch system is designed to withstand extreme conditions and road salt while remaining easy to maintain. Mandrel-bent tubing eliminates restrictions and rippling, providing a smooth path for exhaust gases that results in up to a 47% increase in flow compared to the factory setup.

This dual split rear system features quad carbon fiber tips that provide a high-end, performance-oriented aesthetic. As a direct bolt-on upgrade, it utilizes factory mounting points for a straightforward installation process without the need for custom fabrication or welding.

• Series: Armor Pro
• Material: T304 Stainless Steel
• Tubing Diameter: 2.5-inch
• Exit Style: Dual Split Rear
• Tip Finish: Quad Carbon Fiber
• Construction: Mandrel-bent tubing
• Performance: Up to 47% flow increase over stock
• Installation: Bolt-on
• Warranty: Lifetime

Fits 2021-2026 BMW M3 and M4 (Base, Competition, CS, CSL, and xDrive models).

The MBRP Armor Pro Series axle-back exhaust system is engineered for drivers who demand the highest material standards and performance. Constructed from T304 stainless steel, this system is designed to withstand extreme environments while remaining easy to maintain. The 3-inch mandrel-bent tubing provides a smooth path for exhaust gases, resulting in up to a 4% increase in flow over the factory system, which improves engine efficiency and performance.

This dual rear-exit system is a direct bolt-on upgrade that retains the factory active exhaust valve functionality, allowing you to keep control over the vehicle's acoustic profile. It comes complete with premium carbon fiber tips to provide a high-end, track-inspired aesthetic for the G80 and G82 platforms.

• Series: Armor Pro
• Material: T304 Stainless Steel
• Tubing Diameter: 3-inch
• Exit Style: Dual Rear Exit
• Tip Material: Carbon Fiber
• Installation: Bolt-on
• Flow Increase: Up to 4%
• Mandrel-bent tubing for maximum flow
• Retains factory active sound valves
• Manufacturer Lifetime Warranty

Fits 2017-2021 BMW M240i and M240i xDrive (3.0L).

The MBRP Armor Pro Series axle-back exhaust system is engineered for the BMW M240i owner seeking a moderate, aggressive tone without compromising on durability. Constructed from high-grade T304 stainless steel, this 3-inch system provides superior corrosion resistance and longevity in even the harshest driving conditions. Every tube is mandrel-bent to maintain a constant diameter, optimizing exhaust flow and reducing backpressure.

The Street Version is designed as a direct-fit replacement for the factory system, utilizing OEM hanger locations for a simple bolt-on installation. This kit is specifically designed to eliminate the factory exhaust valve without requiring an electronic simulator, streamlining the exhaust path. Finished with premium dual carbon fiber tips, this system delivers a refined aesthetic to match the 25% increase in exhaust flow.

• 3-inch mandrel-bent T304 stainless steel tubing
• Dual rear exit with carbon fiber tips
• Street Version sound profile for a moderate aggressive tone
• Up to 25% increase in exhaust flow over factory
• Eliminates factory exhaust valve (no simulator required)
• Direct fit to OEM hangers with a bolt-on, no-weld design
• Includes all necessary hardware for installation
• Manufacturer Lifetime Warranty

Fits 2016-2026 Mazda MX-5 Miata and MX-5 Miata RF models across all trims including Sport, Club, Grand Touring, and Special Editions.

The MBRP Armor Pro Series axle-back exhaust is engineered to improve the performance and acoustic profile of the ND-generation Miata. Constructed from premium T304 stainless steel, this system provides maximum durability and corrosion resistance in all environments. The 2.5-inch mandrel-bent tubing ensures a smooth exhaust path, delivering up to a 43% increase in flow over the factory components for improved throttle response and efficiency.

This system utilizes Helmholtz resonator technology to provide an aggressive, refined exhaust note while minimizing cabin drone. The single rear-exit design is finished with a 4-inch OD carbon fiber tip for a modern, high-performance aesthetic. Installation is a straightforward bolt-on process that utilizes factory mounting points with no welding required.

• Armor Pro Series T304 stainless steel construction
• 2.5-inch mandrel-bent tubing for maximum flow
• Helmholtz technology for an enhanced, aggressive tone without drone
• 4-inch carbon fiber exhaust tip included
• Up to 43% flow increase over stock
• Direct bolt-on installation using factory hangers
• Manufacturer Part Number: S5262304

Fits select 2019-2026 Mazda 3 Hatchback models, including Base, Preferred, Premium, Carbon Edition, and 2.5 Turbo trims.

This MBRP axle-back exhaust system is engineered to provide your Mazda 3 Hatchback with a more aggressive exhaust note and improved flow without the complexity of a full cat-back installation. Constructed from premium T304 stainless steel, this system offers the highest level of corrosion resistance and durability, making it an ideal choice for vehicles driven in harsh climates or salted winter roads.

The system features 2.5-inch mandrel-bent tubing to maintain consistent diameters through every bend, minimizing backpressure and turbulence. The dual rear exit configuration is finished with premium carbon fiber tips, providing a modern, high-end aesthetic that complements the Hatchback's styling. Designed as a direct bolt-on upgrade, this system utilizes factory mounting points for a straightforward installation process.

• Durable T304 stainless steel construction for maximum longevity
• 2.5-inch mandrel-bent tubing for optimized exhaust flow
• Dual rear exit design with premium carbon fiber tips
• Engineered to deliver an enhanced, sporty exhaust tone
• Simple bolt-on installation using factory hangers
• Specific fitment for 2019-2026 Mazda 3 Hatchback models

Fits 2019-2026 Mazda 3 models, including Base, 2.5 S, 2.5 Turbo, Carbon Edition, Preferred, and Premium trims.

The MBRP Armor Pro Series axle-back exhaust system is engineered for drivers seeking maximum durability and a refined tone. Constructed from premium T304 stainless steel, this 2.5-inch system resists corrosion in the harshest environments while remaining easy to clean and maintain. The Street Profile sound delivers an enhanced, aggressive exhaust note that remains comfortable for daily driving without excessive cabin drone.

This system utilizes mandrel-bent tubing to ensure consistent internal diameters through every curve, maximizing exhaust flow and reducing backpressure. The bolt-on design allows for a straightforward installation using factory mounting points, requiring no specialized tools or welding. Each system is finished with dual mirror-polished tips for a high-end appearance that complements the Mazda 3's rear fascia.

• Series: Armor Pro
• Profile: Street
• Material: T304 Stainless Steel
• Tubing Diameter: 2.5-inch
• Exit Style: Dual Rear Exit
• Tip Finish: Mirror Polished
• Installation: Bolt-on
• Construction: Mandrel-bent tubing
• Warranty: Manufacturer Lifetime Warranty

Fits 2022-2026 Cadillac CT5-V Blackwing (6.2L).

Give your CT5-V Blackwing the acoustic profile it deserves with the Corsa Performance 3-inch axle-back exhaust system. This system is specifically engineered to integrate seamlessly with the factory Cadillac Active Exhaust valve assembly, allowing you to retain full control over your driving modes while unleashing a more aggressive tone. By utilizing Corsa's patented Reflective Sound Cancellation (RSC) technology, this system eliminates cabin drone at cruising speeds regardless of whether the valves are open or closed.

Constructed from premium 304 stainless steel, this axle-back system features a 10% flow increase over the stock exhaust and delivers a volume increase of over 11dB. The system is finished with twin 4.5-inch dual-walled black PVD tips for a bold, high-performance aesthetic. Installation is a straightforward bolt-on process that plugs directly into the factory dual-mode active exhaust modules with no cutting or welding required.

• Manufacturer Part Number: 21322BLK
• 3.0-inch 304 stainless steel mandrel-bent tubing
• Twin 4.5-inch dual-walled black PVD tips
• Patented No Drone RSC technology custom-tuned for the 6.2L LT4
• 10% flow improvement over factory system
• Retains factory active exhaust valve functionality
• Direct bolt-on installation with included hardware
• Made in the USA

Fits 2019-2024 BMW 330i and 330i xDrive (G20) and 2021-2024 BMW 430i and 430i xDrive (G22).

The Dinan D660-0091-BLK valved axleback exhaust system provides a significant acoustic and aesthetic upgrade for the B48-powered BMW platform. Fabricated from 100% brushed T304 stainless steel and fully TIG welded, this system replaces the restrictive factory exhaust while utilizing original mounting points and factory cut locations for a precision fit. The design significantly increases flow by transitioning from 85mm piping to dual 60mm paths, compared to the smaller factory dual 83mm configuration.

Aesthetically, the system replaces the standard 90mm slash-cut tips with massive 102mm (4-inch) double-walled, black ceramic-coated tips featuring laser-engraved Dinan logos. To maintain refinement, Dinan utilizes drone abatement technologies to reduce unwanted cabin resonance, ensuring the deep, sporty growl is enjoyed without fatigue. This system is designed to retain full factory electronic valve control, allowing the vehicle to manage sound levels based on drive mode.

• 100% T304 stainless steel construction with a brushed finish
• Dual 102mm (4-inch) black ceramic coated, clamp-on tips
• Retains factory exhaust valve functionality
• Maximum performance gains of +4 HP and +3 lb-ft of torque
• Increased flow with 85mm to dual 60mm piping
• Drone abatement technology for superior cabin comfort
• Straightforward installation using factory mounting mechanics
• Manufacturer Part Number: D660-0091-BLK

Fits 1999-2006 BMW E46 3-Series models.

The ISR Performance Series II MBSE Rear Section is engineered to replace the restrictive factory rear muffler with a high-flow, single-exit design. This modular exhaust component provides a more aggressive tone and improved exhaust scavenging, allowing your engine to breathe more freely while reducing significant weight from the rear of the vehicle. Constructed with precision-welded tubing and designed to follow factory routing, it offers a straightforward upgrade for enthusiasts seeking better sound and performance on the E46 chassis.

• Manufacturer Part Number: IS-S2RO-MBSE-E46
• Product Series: Series II MBSE (Modular Build Single Exit)
• Rear section only; designed for modular compatibility
• High-flow piping reduces backpressure and improves throttle response
• Lightweight construction over OEM muffler assemblies
• Direct-fit installation using factory-style hangers

Fits BMW E46 3 Series models. The ISR Performance Series II EP Dual-Rear Section is engineered to provide a high-flow exhaust solution for drivers looking to enhance the sound and appearance of their BMW E46. As a rear-section-only component, it focuses on the final exit of the exhaust system, replacing the factory muffler assembly with a signature dual-exit layout.

This component is designed to work as part of the ISR Series II EP lineup, ensuring precise fitment and a straightforward installation process. The dual-tip design offers a more aggressive rear profile compared to the standard OE setup while reducing backpressure for improved engine response.

• Direct fitment for the BMW E46 chassis
• Series II EP dual-rear section design
• Aggressive dual-exit exhaust tip configuration
• Precision-engineered for optimized flow and sound
• Manufacturer Part Number: IS-S2RO-EPD-E46

Fits 1999-2005 Lexus IS300.

The ISR Performance MBSE Single Exhaust is engineered to replace the restrictive factory exhaust system on the first-generation Lexus IS300. This single-exit configuration focuses on optimizing exhaust flow and reducing vehicle weight compared to the bulky OE muffler and piping. Built for durability and precise fitment, it provides a more aggressive exhaust note while maintaining enough refinement for daily driving.

• Specifically designed for the 1999-2005 Lexus IS300 chassis
• Single-exit layout for improved ground clearance and significant weight savings
• Utilizes factory-style mounting points for a secure, bolt-on installation
• Mandrel-bent piping ensures smooth exhaust gas velocity and reduced backpressure
• Manufacturer Part Number: IS-MBSE-IS300-1G

Fits 1998-2005 Lexus GS300.

The ISR Performance MBSE Dual Exhaust system provides a performance-oriented exhaust solution for the second-generation Lexus GS300. This system replaces the restrictive factory exhaust components with a high-flow dual-exit layout, specifically tuned to enhance the vehicle's acoustic profile and visual presence. Each system is designed to utilize factory mounting points for a secure, bolt-on installation that requires no custom fabrication.

• Dual-exit configuration from the ISR MBSE series
• Distinctive blue-burnt finish on the exhaust tips for a custom look
• Direct bolt-on fitment for 1998-2005 Lexus GS300 chassis
• Manufacturer Part Number: IS-MBSE-GS3002G

Fits 2007-2015 Infiniti G37 Sedan models.

The ISR Performance MBSE Dual Catback Exhaust provides a significant upgrade over the restrictive factory system, engineered to optimize exhaust gas flow and enhance the signature VQ engine note. This dual-exit system is designed specifically for the G37 Sedan chassis, balancing a deep, aggressive tone with the performance benefits of a high-flow exhaust layout.

Constructed with precision-welded piping and high-quality resonators, the MBSE series focuses on delivering a refined yet powerful sound profile. The bolt-on architecture utilizes factory mounting points for a secure fitment, making it a straightforward replacement for the OEM exhaust components.

• Dual-exit configuration for maximum exhaust scavenging and flow
• Specifically tuned resonators to manage drone and exhaust frequency
• Precision fitment for the 2007-2015 Infiniti G37 Sedan platform
• Includes all necessary installation hardware and gaskets
• Manufacturer Part Number: IS-MBSE-G37SDN

Fits 2011-2014 Ford Mustang GT and 2012-2013 Mustang Boss 302 (5.0L).

Upgrade your vehicle's acoustic profile with the Corsa Sport Axle-Back Exhaust System (MPN: 14316BLK). Engineered specifically for the 5.0L Coyote engine, this system delivers an aggressive, custom-tuned exhaust note under acceleration while ensuring a completely drone-free experience during highway cruising. This is achieved through Corsa's patented Reflective Sound Cancellation (RSC) technology, which uses acoustic engineering to eliminate the low-frequency resonance that causes cabin drone.

Constructed from premium 304 stainless steel, this system is built to withstand the elements while improving vehicle performance. It flows 150% better than the factory exhaust and provides a significant weight reduction, coming in at 18 lbs lighter than the stock components. The system is finished with dual-walled black stainless steel tips for a sleek, high-performance aesthetic.

• Patented Reflective Sound Cancellation (RSC) Technology for a drone-free cruise
• Sport Series aggressive sound profile under throttle
• Flows 150% better than the OEM exhaust system
• Weight reduction: 18 lbs lighter than stock
• Premium 304 stainless steel construction
• Dual-walled black stainless steel tips
• Direct bolt-on installation with no welding required
• Includes detailed printed instructions (full-color available online)
• Made in the USA
• Manufacturer Part Number: 14316BLK

Fits 2019-2025 Mazda 3 (2.5L / 2.5L Turbo) sedan models.

The Borla S-Type Axle-Back system (11982) is engineered to deliver a deeper, sportier exhaust note for the fourth-generation Mazda 3 without introducing cabin drone. This direct bolt-on system replaces the restrictive factory rear muffler, improving exhaust velocity and flow through high-quality mandrel-bent tubing. Specifically tuned for the 2.5L Skyactiv powerplants, it provides an aggressive acoustic profile under acceleration while remaining civil during cruise.

Constructed from premium T-304 stainless steel, this system features 2.25-inch main piping that transitions into dual 2-inch pipes. The assembly is finished with dual 4-inch round, bright chrome tips designed to perfectly fill the factory rear bumper cutouts. Borla utilizes patented straight-through and multi-core technology to minimize backpressure, ensuring an accurate fit and long-term durability.

• S-Type sound level provides an aggressive tone without interior drone
• T-304 stainless steel construction for maximum corrosion resistance
• 2.25in to dual 2in mandrel-bent piping for optimized flow
• Dual 4in bright chrome T-304 stainless steel tips
• Precision CNC manufacturing for a direct bolt-on fitment
• Manufacturer Part Number: 11982
• Borla Million-Mile Warranty

Fits 1989-1994 Nissan 240SX (S13).

The ISR Performance Series II EP Single Tip Blast Pipe Exhaust delivers the aggressive, track-inspired aesthetic of a blast pipe with a more controlled acoustic profile. By incorporating an integrated resonator, this exhaust system mitigates the harsh rasp and drone often associated with straight-pipe setups, making it a practical choice for street-driven S13s that still want a bold presence.

• Series II EP product line featuring a single tip blast pipe design
• Integrated resonator for improved sound quality and volume management
• Direct fitment for the 1989-1994 Nissan 240SX chassis
• Durable construction designed for enthusiasts and drift applications
• Manufacturer Part Number: IS-S2EPSR-S13

Fits 1997-2004 Chevrolet Corvette Base, Z06, and special editions.

Enhance your C5's exhaust scavenging and eliminate the restrictive factory mid-section with the CORSA Performance X-pipe. Engineered to increase air volume by 47% over the stock component, this mandrel-bent 304 stainless steel mid-pipe is designed to optimize engine efficiency while delivering an aggressive exhaust note under acceleration. This system is specifically tuned for the Corvette's personality, providing a lighter-than-stock solution that requires no welding for installation.

Utilizing CORSA's patented Reflective Sound Cancellation (RSC) technology, this X-pipe works in tandem with your exhaust system to target and eliminate drone frequencies, ensuring a comfortable, drone-free experience during highway cruising. Each unit is precision-manufactured in the USA to guarantee a perfect fit using factory mounting locations.

• Increased Flow: Flows 47% better than the factory mid-pipe for improved performance.
• RSC Technology: Patented Reflective Sound Cancellation (RSC) eliminates cabin drone without restricting flow.
• Premium Construction: Built from high-quality 304 stainless steel for long-term corrosion resistance and durability.
• Direct Bolt-On: Easy installation with no welding required; includes detailed printed instructions.
• Weight Reduction: Lighter construction than stock helps reduce overall vehicle weight.
• Manufacturer Part Number: 14111CB
• Warranty: Limited Lifetime Warranty.

Fits 2023-2026 BMW M2 (Base). This Dinan Freeflow Axleback Exhaust System is engineered to improve the exhaust note and performance of the G87 M2 without sacrificing civility. By increasing the tubing diameter to 76mm (compared to 70mm factory piping), Dinan reduces backpressure and optimizes flow throughout the system. This axleback retains the factory computer-controlled exhaust valve actuators, allowing you to adjust the exhaust tone via the M-drive settings.

When the valves are closed, gases are routed through the Dinan muffler using absorption and reactive technologies to mitigate drone and maintain a deep, subdued tone. Under high-load conditions, the open valves allow gases to bypass the muffler for a near straight-pipe flow. Constructed from 100% 304 stainless steel, this system is 6 pounds lighter than the factory exhaust and includes four 4.5-inch double-walled, black ceramic-coated tips.

• Direct replacement for factory axleback (MPN: D660-0100-BLK)
• Increases performance with gains of up to +6 HP and +5 lb-ft of torque
• 76mm (3-inch) 304 stainless steel construction for corrosion resistance
• Four 4.5-inch (114mm) black ceramic-coated clamp-on tips with laser-engraved logo
• Total weight: 38 lbs (6 lbs lighter than the 44 lb stock unit)
• Retains factory exhaust valve functionality and M-drive integration
• Advanced drone abatement technology reduces cabin resonance
• Includes all necessary mounting hardware for a factory-like fitment

Fits 2020-2026 BMW X5 M and X6 M (including Competition models).

The Dinan Freeflow Axleback Exhaust System for the F95 X5 M and F96 X6 M is engineered to improve exhaust flow while delivering a refined, aggressive tone. By increasing the tubing diameter to 83mm (up from the factory 80mm), this system reduces backpressure and optimizes performance. The 100% 304 stainless steel construction ensures long-term durability and corrosion resistance.

This system retains the factory computer-controlled exhaust valves, allowing the exhaust tone to be adjusted via the vehicle's M-drive settings. The secondary valves feature a massive 76mm diameter—30% larger than stock—to maximize flow and sound volume under load. Dinan’s proprietary drone abatement technology and reactive muffler design ensure the cabin remains comfortable and intimate during low-speed cruising.

• 100% 304 stainless steel construction
• 83mm diameter piping for increased flow (vs. 80mm stock)
• Four 4.5" (114mm) double-walled, black ceramic-coated tips with laser-engraved logos
• Retains factory computer-controlled exhaust valve operation (reuses stock actuators)
• Twin 76mm secondary exhaust valves
• Performance gains: +6 HP and +5 lb-ft torque
• Engineered with drone abatement technology to reduce cabin resonance
• Factory-like fitment with included mounting hardware
• MPN: D660-0090-BLK

Fits 2018-2024 BMW X3 M40i and 2019-2025 BMW X4 M40i.

The Dinan Freeflow Axleback Exhaust System (D660-0099-BLK) provides a sophisticated acoustic upgrade for the G01/G02 M40i platform. Engineered to eliminate the restrictive factory central collector and resonator, this system utilizes a straight-through, high-flow design that transitions to an 83mm single pipe. The included Helmholtz-equipped muffler is precision-tuned to cancel out drone-inducing frequencies while producing Dinan’s signature low-frequency rumble under load.

Constructed entirely from 304 stainless steel, this system retains full factory exhaust valve functionality. This allows the driver to maintain refined volume levels during low-RPM cruising while unlocking an aggressive, straight-pipe sound profile at higher engine speeds. The bolt-on design requires no cutting or welding and provides a significant weight reduction over the OE components.

• Direct bolt-on installation with no cutting or welding required
• 100% 304 stainless steel construction for corrosion resistance
• Quad 3.75-inch (95mm) double-walled, black ceramic coated tips with laser-engraved logos
• Retains factory electronic exhaust valve functionality
• 83mm piping diameter vs. 80mm factory diameter for improved flow
• Weight savings of 7 lbs compared to the stock exhaust (53 lbs vs. 60 lbs)
• Performance gains of up to +6 HP and +5 lb-ft of torque
• Integrated Helmholtz technology for cabin drone abatement
• Manufacturer Part Number: D660-0099-BLK

Fits 2022-2026 BMW M240i and M240i xDrive models.

The Dinan Freeflow Axleback Exhaust transforms the G42 M240i exhaust note by replacing the restrictive factory single-valve setup with a high-flow dual-valve configuration. While the OE system chokes off the passenger-side tip when the valve is closed, Dinan’s engineering team integrated a second 76mm computer-controlled valve. This allows for symmetrical exhaust flow and a deeper, meatier tone that mimics a straight-pipe solution under load while maintaining civility during cruising.

Built from TIG-welded, brushed T304 stainless steel, the system features enlarged 76mm internal tubing—a significant increase over the stock 70mm diameter. To eliminate cabin drone, the muffler utilizes specialized drone abatement technology, ensuring the interior remains quiet enough for conversation even with the more aggressive exterior sound profile. The system is finished with quad 4-inch double-walled tips in a black ceramic coating.

• Power Gains: +6 HP and +5 lb-ft torque @ 6600 RPM
• Material: 100% T304 stainless steel construction
• Tubing Diameter: 76mm (vs 70mm stock)
• Valves: Dual 76mm valves (30% less restrictive than OE)
• Tips: Quad 4-inch clamp-on, double-walled black ceramic coated and laser engraved
• Weight: 4 lbs lighter than the factory system
• Installation: Reuses factory actuator and adds a second included valve/actuator; includes all mounting hardware
• Manufacturer Part Number: D660-0098-BLK

Fits 2020-2026 Toyota GR Supra (Base, Premium, and A91 Edition).

The Dinan Freeflow Axleback Exhaust System (MPN: D660-0096-BLK) provides a significant upgrade over the factory setup by replacing the restrictive stock single-to-dual pipe configuration with an enlarged 83mm single-pipe run. Fabricated from brushed T304 stainless steel and TIG welded for maximum durability, this system reduces total vehicle weight by 10 pounds compared to the 56-pound factory unit.

Designed for precision fitment using factory cut points and mounting locations, the system utilizes advanced drone abatement technology to maintain a refined cabin experience while delivering Dinan's signature low-frequency rumble. This system retains the factory valve control, allowing for versatile sound levels based on driving mode. The exhaust gases exit through massive dual 114.3mm (4.5-inch) double-walled tips finished in a durable black ceramic coating and laser-engraved with the Dinan logo.

• Maximum performance gains of +6 HP and +5 ft-lb of torque
• Full 304 Stainless Steel construction with 83mm primary piping
• Dual 4.5-inch (114.3mm) black ceramic coated tips with laser-engraved logos
• Acoustically tuned muffler reduces cabin drone while increasing exterior volume
• 10-pound weight reduction (46 lbs vs 56 lbs stock)
• Direct bolt-on installation utilizing factory mounting hardware
• Retains full functionality of the factory exhaust valve
• Manufacturer Part Number: D660-0096-BLK

Fits 2021-2026 BMW M3 and M4 models (Base, Competition, Competition xDrive, and CSL).

The Dinan Freeflow Axleback Exhaust for the G8x chassis provides a significant upgrade in both sound and performance without sacrificing cabin comfort. By increasing the tubing diameter to 76mm (up from the factory 70mm), this system reduces backpressure and improves flow throughout the entire assembly. To ensure a drone-free experience in both sedan and coupe body styles, Dinan utilizes specific drone abatement technologies along with absorption and reactive muffler internals.

This system retains the factory computer-controlled exhaust valve actuators, allowing you to adjust the exhaust note via your BMW M-Drive settings. When the valves are closed, gases are routed through the muffler for a deep, civilized tone. Under high-load conditions, the valves open to provide a near straight-pipe flow for maximum auditory feedback and performance. Constructed from 100% 304 stainless steel, the system is finished with quad 4.5-inch black ceramic coated tips and is 6 pounds lighter than the original equipment.

• Fits 2021-2026 BMW M3/M4 (G80/G82/G83)
• 100% 304 Stainless Steel construction
• 76mm (3-inch) diameter piping for increased flow
• Four 4.5-inch (114mm) double-walled black ceramic coated clamp-on tips
• Retains factory exhaust valve actuators and M-Drive functionality
• Drone abatement technology reduces internal cabin resonance
• Weight: 38 lbs (6 lbs lighter than the 44 lb stock system)
• Maximum gains: +6 HP and +5 lb-ft torque
• Manufacturer Part Number: D660-0093-BLK

Fits select 2020-2025 BMW X3 M and X4 M models (including Competition variants).

The Dinan Freeflow Axleback Exhaust System provides a deeper, sportier exhaust note while enhancing the aggressive aesthetics of the BMW X3 M and X4 M. Constructed from 100% 304 brushed stainless steel with precision TIG welding, this system replaces the restrictive factory muffler. It features quad 4.5-inch (114mm) black ceramic-coated, double-walled tips with an inverted clamp design that hides hardware for a clean, "Tuck-it" appearance. The system utilizes 76mm piping (up from the 70mm OE diameter) and incorporates massive 76mm computer-controlled valves to minimize backpressure while maintaining civil low-speed operation.

• Direct bolt-on installation with included mounting hardware
• Power gains: +8 HP and +6 FT-LB @ 6600 RPM
• Weight reduction: 5 lbs lighter than the factory system
• 76mm twin exhaust valves are 30% less restrictive than OE
• Signature straight-cut tip design with laser-engraved Dinan logo
• Retains factory computer-controlled exhaust valve functionality
• Larger diameter 76mm piping for increased flow
• Manufacturer Part Number: D660-0086-BLK

Fits 2020-2026 BMW M340i and M440i models (including xDrive and Gran Coupe). This Dinan Freeflow Axleback Exhaust System (D660-0085-BLK) transforms the G20/G22/G26 exhaust note, replacing the restrictive single-valve factory setup with a high-flow, dual-valve configuration for superior symmetry and sound profile.

Constructed entirely from TIG-welded and brushed T304 stainless steel, this system increases piping diameter to 76mm (up from the 70mm factory bore). The innovative dual 76mm computer-controlled valves allow for maximum flow during high-load conditions while maintaining a civilized, drone-free cabin during low-speed cruising. The system is finished with quad 4-inch double-walled, ceramic black tips that are laser-engraved with the Dinan logo for a high-end, aggressive aesthetic.

• Direct bolt-on installation with all necessary mounting hardware included
• Retains factory exhaust valve computer control; adds a second valve for symmetrical flow
• Power Gains: +6 HP and +5 LB-FT torque @ 6600 RPM
• Weight Reduction: 4 lbs lighter than the OEM exhaust system
• Construction: 100% T304 stainless steel for corrosion resistance
• Tips: Quad 4-inch clamp-on, double-walled, ceramic black finish
• Piping Diameter: 76mm (3.0in) main tubing
• Part Number: D660-0085-BLK

Fits 2018-2023 BMW M5 Base, Competition, and CS models. This Dinan Freeflow Axleback Exhaust System (D660-0079-BLK) is engineered to optimize exhaust flow and provide a sophisticated, sporty tone. By increasing the main tubing diameter to 83mm (up from 80mm stock), Dinan reduces backpressure and unlocks additional performance while maintaining interior cabin comfort.

Constructed from 100% 304 stainless steel, the system features a muffler designed with absorption and reactive technologies to eliminate low-RPM drone. It retains the computer-controlled factory exhaust valves, allowing the vehicle to remain quiet during low-load cruising and open fully for maximum flow under acceleration. The twin secondary exhaust valves are enlarged to 76mm, offering 30% less restriction than the original equipment.

• Direct bolt-on installation with included mounting hardware
• 83mm diameter piping for increased flow and reduced backpressure
• Four 4-inch double-walled, black ceramic-coated, and laser-engraved tips
• Retains factory valve actuators and M-drive sound adjustments
• Performance gains: +6 HP and +5 lb-ft torque at 6600 RPM
• Manufacturer Part Number: D660-0079-BLK