Eliminate exhaust restriction and optimize flow with the Diamond Eye MR400 Muffler Replacement Pipe. This component is designed for enthusiasts looking to replace a restrictive factory muffler with a straight-through design to improve exhaust velocity and achieve a more aggressive sound profile.

Built from heavy-duty aluminized steel, this pipe is manufactured using precision CNC mandrel bending. Unlike crush-bent tubing, mandrel bending maintains a consistent 4-inch diameter throughout, preventing turbulence and backpressure. The 30-inch length provides ample material for integration into existing exhaust setups or Diamond Eye performance systems.

• Manufacturer Part Number: 510205
• Series: MR400
• Material: Aluminized Steel
• Diameter: 4.0 in.
• Overall Length: 30.0 in.
• Construction: CNC Mandrel-Bent

Fits 2022-2024 Subaru WRX (2.4L Turbo).

Enhance the exhaust note and streamline the rear profile of your VB chassis with the BLOX Racing Axle-Back Muffler Delete. This system replaces the restrictive and heavy factory muffler assemblies with a lightweight, high-flow design, delivering a more aggressive and pronounced boxer engine sound while reducing overall vehicle weight. Constructed for durability and precision fitment, this kit bolts directly to the factory mid-pipe mounting points for a straightforward installation.

• Features 4-inch single-wall tips with a sleek matte black finish
• Direct bolt-on axle-back design for easy installation
• Replaces factory mufflers to increase exhaust volume and reduce weight
• Engineered for the 2022+ Subaru WRX platform
• Manufacturer Part Number: BXEX-51106-BK

Fits 2022-2024 Subaru WRX.

The BLOX Racing Axle-Back Muffler Delete is a direct bolt-on performance upgrade designed to replace the restrictive factory muffler units. By eliminating the heavy OE mufflers, this kit reduces rear-end weight and allows the 2.4L turbocharged boxer engine to produce a deeper, more aggressive exhaust note. The system features high-quality construction and precision-aligned hangers to ensure a straightforward installation using existing factory mounting points.

• 4-inch single wall exhaust tips for a classic race-inspired appearance
• Polished finish for superior corrosion resistance and a clean aesthetic
• Axle-back design simplifies installation and retains the factory mid-pipe
• Improves exhaust flow and provides a more prominent auditory profile
• Manufacturer Part Number: BXEX-51106

Fits 2015-2021 Subaru WRX and WRX STI.

The BLOX Racing Muffler Delete Kit (BXEX-51104-BK) is designed to replace the restrictive factory muffler assemblies on the VA chassis WRX and STI. By removing the heavy OEM mufflers, this kit reduces vehicle weight and allows for a significantly more aggressive exhaust note. This direct-fit solution utilizes factory mounting points for a straightforward installation that transforms both the sound and the rear aesthetic of the vehicle.

• Direct bolt-on replacement for factory muffler units
• Integrated black-finished exhaust tips for a custom, stealthy look
• Reduces rear-end weight by eliminating bulky OEM mufflers
• Optimizes exhaust flow and enhances Boxer engine sound
• Manufacturer Part Number: BXEX-51104-BK

Fits 2015-2021 Subaru WRX and WRX STI.

The BLOX Racing Muffler Delete Kit (BXEX-51104) is an essential upgrade for owners looking to shed weight and unlock the signature boxer rumble of the VA-chassis Subaru. This kit replaces the heavy, restrictive factory muffler assemblies with a high-flow design that provides a significantly more aggressive exhaust note and improves exhaust scavenging.

• Direct bolt-on installation using factory mounting points
• Replaces restrictive OEM muffler assemblies
• Reduces rear-end weight for improved handling balance
• Enhanced exhaust tone and increased volume
• Manufacturer Part Number: BXEX-51104

Fits select 1998-2007 Dodge Ram 2500/3500 and Chevrolet/GMC Silverado/Sierra 2500 HD/3500 (5.9L / 6.6L).

The Banks Power Straight Pipe Monster Muffler Delete kit (MPN 53799) is specifically engineered to replace the 53801 muffler used in 4-inch Banks Power Monster Exhaust systems. This 36-inch straight pipe allows for maximum exhaust flow and a more aggressive tone by removing the muffler while maintaining the structural integrity of your existing Banks system. Please note that this kit is designed exclusively for use with 4-inch Banks Monster Exhausts and does not replace the OEM factory muffler.

Constructed from durable T-409 stainless steel, this kit is built to withstand the high temperatures and harsh conditions common to heavy-duty diesel applications. It includes all necessary hardware for a straightforward installation into your existing Banks configuration.

• Replaces Banks Power Muffler P/N: 53801
• Dimensions: 4-inch diameter x 36-inch length
• Material: T-409 Stainless Steel
• Includes all required mounting hardware
• Designed for 1998-2007 Dodge/GM 2500 and 3500 diesel trucks
• Manufacturer Part Number: 53799

Maximize exhaust flow and engine response with the aFe Power SATURN 4S Muffler Delete Pipe. This 409 stainless steel pipe is specifically engineered to replace the 4-inch In/Out muffler found in many factory and aftermarket performance exhaust systems. By removing the restrictive muffler, you achieve a more aggressive exhaust note while reducing backpressure for improved throttle response.

Built for durability, the 409 stainless steel construction provides excellent heat resistance and long-term service. This pipe features a 4-inch internal diameter (ID) and a 30-inch overall length to facilitate a straightforward installation. To ensure a professional, leak-free finish, the kit includes two high-quality Torca AccuSeal clamps for a secure 360-degree seal.

• Manufacturer Part Number: 49M00039
• Material: 409 Stainless Steel
• Inlet/Outlet: 4 in ID
• Dimensions: 24 in Body Length / 30 in Overall Length
• Hardware: Includes (2) Torca AccuSeal exhaust clamps
• Emissions: Product does not require a CARB EO#