Fabricate high-performance exhaust components with this Stainless Bros 1.625-inch 90-degree mandrel bend elbow. Manufactured from premium SS321 stainless steel, this elbow is specifically engineered for high-temperature applications such as turbo manifolds and headers where standard 304 stainless might fatigue. The titanium-stabilized SS321 alloy offers superior resistance to intergranular corrosion and increased strength at elevated operating temperatures.

This elbow features a tight 1D radius, making it an essential component for custom fabrication in confined engine bays where space is at a premium. The "No Leg" design provides a clean, radius-only bend, allowing for precise fitment and reduced weight in complex assemblies.

• Material: SS321 Stainless Steel
• Outer Diameter: 1.625 in (1-5/8")
• Wall Thickness: 16 Gauge (0.065 in)
• Bend Angle: 90 Degrees
• Centerline Radius: 1D (1.625 in)
• Configuration: No Leg (Bent portion only)
• Manufacturer Part Number: 701-04256-3100

This 6-pack of Stainless Bros 3-inch loose radius pie cuts is engineered for precision fabrication, including custom exhaust systems, headers, and intake plumbing. Each segment is pre-cut from 16-gauge wall tubing to ensure consistent angles and clean fitment, significantly reducing the time spent on manual cutting and deburring.

The "Loose Radius" 1.5D profile results in a 4.5-inch Center Line Radius (CLR), which is ideal for creating smooth, sweeping bends that maximize exhaust gas velocity and flow efficiency. These segments are ready to be tacked and TIG-welded for a professional, high-end finish on any custom build.

• Outer Diameter: 3.0"
• Wall Thickness: 16 Gauge (0.065")
• Radius Type: 1.5D Loose Radius
• Center Line Radius (CLR): 4.5"
• Quantity: 6 individual segments
• Manufacturer Part Number: 609-07602-0006

Fabricate custom exhaust systems, headers, and intake piping with precision using this 5-pack of Stainless Bros stainless steel pie cuts. Designed for high-performance applications where clearance is limited, these 2.75-inch diameter sections feature a 1D (2.75-inch) center line radius (CLR), enabling exceptionally tight bends that would be difficult to achieve with standard mandrel piping.

Each section is precision-cut from 16-gauge stainless steel, ensuring consistent wall thickness and clean edges for high-quality TIG welding. These pie cuts are essential for professional fabricators who need to navigate complex routing in cramped engine bays or chassis tunnels without compromising exhaust flow or structural integrity.

• Diameter: 2.75"
• Radius: 1D / 2.75" CLR (Tight Radius)
• Wall Thickness: 16 Gauge (0.065")
• Material: Stainless Steel
• Quantity: 5-Piece Pack
• Manufacturer Part Number: 609-07001-0016

Construct precision-engineered exhaust systems and custom manifolds in the most confined spaces with this 6-pack of Stainless Bros 2.50-inch 1D tight radius pie cuts. These 16-gauge stainless steel sections are designed for professional fabricators who need to route piping through tight engine bays where standard mandrel bends are too large to fit.

The 1.0D center line radius (CLR) provides an exceptionally tight turn without sacrificing structural integrity or flow quality. Each piece is precision-cut to ensure clean weld seams and consistent fitment for TIG welding applications including turbo manifolds, downpipes, and wastegate dump tubes.

• Brand: Stainless Bros
• Diameter: 2.50in
• Radius: 1D / 2.50in CLR
• Wall Thickness: 16 Gauge (0.065")
• Construction: Stainless Steel
• Quantity: 6-Piece Pack
• Part Number: 609-06302-0016

Stainless Bros 1.75-inch 1D tight radius pie cuts are precision-engineered for professional exhaust and intake fabrication. These 16-gauge stainless steel segments allow fabricators to create high-quality, complex bends in cramped engine bays where standard mandrel bends cannot fit. Each segment is carefully deburred and ready for TIG welding right out of the box.

Designed for maximum clearance and flow efficiency, these 1D radius cuts maintain a consistent 1.75-inch center line radius (CLR), ensuring uniform wall thickness and structural integrity throughout the bend. This 6-pack provides enough material to construct a 90-degree bend or multiple smaller directional adjustments.

• Material: 16 Gauge Stainless Steel
• Outside Diameter: 1.75 in
• Center Line Radius (CLR): 1.75 in (1D)
• Pack Quantity: 6 Pie Cuts
• Manufacturer Part Number: 609-04502-0016

The Stainless Bros M18x1.5 O2 sensor bung plug provides a reliable solution for sealing unused oxygen sensor ports in your exhaust system. Designed for high-heat environments, this plug is essential for custom exhaust fabrication or when removing sensors from the exhaust stream during tuning or track use.

Each plug features standard M18x1.5 threads, making it compatible with the vast majority of automotive narrowband and wideband O2 sensor bungs. The included copper crush washer ensures a gas-tight seal, preventing exhaust leaks that could otherwise compromise tuning accuracy or engine performance.

• Thread Size: M18x1.5
• Includes: (1) Plug and (1) Copper Crush Washer
• Application: Universal fitment for standard O2 sensor bungs
• Manufacturer Part Number: 608-00600-0000

The Stainless Bros 1/8in NPT Sensor Bung is a precision-machined solution for fabricators and technicians needing to add sensor ports to custom exhaust systems, intake manifolds, or fluid tanks. This weld-on component provides a reliable, threaded mounting point for standard 1/8in NPT temperature or pressure sensors, ensuring a leak-free seal in high-demand environments.

• Thread Size: 1/8in NPT (National Pipe Thread)
• Material: High-quality stainless steel for superior corrosion resistance and weldability
• Application: Ideal for mounting EGT probes, oil pressure senders, or coolant temperature sensors
• Installation: Designed for weld-on application to stainless steel tubing or components
• Manufacturer Part Number: 604-00400-6000

The Stainless Bros PTE T4 Pro-Mod Turbo Inlet Flange is engineered for high-performance fabrication, specifically designed to interface with Precision Turbo Pro-Mod series T4 housings. Precision CNC-machined from 304 stainless steel, this flange provides a stable, warp-resistant mating surface capable of withstanding the extreme thermal cycles of heavy-duty forced induction systems.

• Fits Precision Turbo (PTE) T4 Pro-Mod turbine housings
• Inlet Diameter: 2.75 in. (approx. 70mm)
• Material: High-grade 304 Stainless Steel for superior corrosion resistance and durability
• Precision-machined surface ensures a leak-free seal at the turbine housing
• Manufacturer Part Number: 603-09014-6170

This Stainless Bros turbine outlet flange is engineered for precision fitment on Borg Warner T4 turbochargers equipped with a 3-5/8" (3.625") V-band discharge. It provides a reliable, high-flow transition from the turbine housing to a 3" downpipe or exhaust section.

CNC-machined from high-grade 304 stainless steel, this flange is designed to withstand the extreme thermal cycling and corrosive environments found at the turbine exit. The precision-ground sealing surface ensures a leak-free connection when paired with the appropriate V-band clamp, maintaining exhaust velocity and preventing dangerous under-hood leaks.

• Material: 304 Stainless Steel
• Turbo Side Fitment: Borg Warner T4 housings with 3-5/8" V-band discharge
• Downpipe Connection: 3" OD Tubing
• Manufacturing Process: Precision CNC-Machined
• Manufacturer Part Number: 603-07614-4000

This Stainless Bros 90-degree mandrel bend is engineered for high-performance fabrication, providing a consistent diameter throughout the curve to maintain optimal exhaust or intake flow. Unlike standard crush bends, the mandrel-bent process ensures no wrinkling or necking, preserving the tubing's structural integrity and internal volume.

• Outer Diameter: 2.25in
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 3.375in (1.5D)
• Leg Length: 6.5in x 6.5in
• Construction: High-grade stainless steel
• Manufacturer Part Number: 601-05756-8150

The dual 6.5-inch legs provide significant material for trimming and precision fitment into custom exhaust systems, turbo manifolds, or cooling circuits. This component is designed for fabricators requiring tight tolerances and clean weldability for professional-grade automotive projects.

Engineered for professional-grade fabrication, the Stainless Bros 2.0-inch diameter mandrel bend is designed to maintain a consistent cross-sectional area through the entire 45-degree curve. This eliminates the flow restrictions and turbulence common in standard crush bends, making it an essential component for high-performance exhaust systems, custom intake tracts, and coolant plumbing.

• Diameter: 2.0in
• Bend Angle: 45 Degrees
• Center Line Radius (CLR): 3.0in (1.5D)
• Leg Lengths: 5in and 8in
• Construction: Precision mandrel bent
• Manufacturer Part Number: 601-05026-1150

The asymmetrical leg lengths (5-inch and 8-inch) provide versatile trimming options for tight engine bays or complex chassis routing. Fabricated from premium stainless steel, this bend is built to withstand high heat and corrosive environments while providing a clean, weldable surface for custom projects.

This Stainless Bros mandrel-bent U-bend is engineered for high-performance fabrication where flow efficiency and space constraints are critical. Featuring a 1.88-inch outer diameter and a tight 1.5D (2.82-inch) center line radius (CLR), this 180-degree bend is ideal for constructing custom headers, exhaust manifolds, or tight-clearance cooling system hard lines.

• Diameter: 1.88in (Outer Diameter)
• Bend Angle: 180 Degree
• Bend Radius: 1.5D / 2.82in Center Line Radius (CLR)
• Leg Lengths: Dual 6in straight legs for versatile trimming and fitment
• Construction: Precision mandrel-bent to maintain consistent wall thickness and internal diameter
• Manufacturer Part Number: 601-04896-1150

The mandrel bending process ensures that the tubing maintains its circular profile throughout the entire radius, eliminating the restrictive necking or wrinkling found in crush-bent alternatives. This provides a smooth path for exhaust gases or fluids, reducing turbulence and maximizing performance.

Construct high-flow exhaust systems or custom intake piping with this Stainless Bros 90-degree mandrel bend. Engineered for professional fabricators, this elbow features a 1.88-inch outside diameter and a 16-gauge wall thickness. The mandrel bending process ensures the tube maintains a constant internal diameter through the radius, preventing the flow restrictions and turbulence common in standard crush-bent tubing.

This "without leg" configuration allows for clean, tight packaging in restricted engine bays or chassis tunnels, providing the flexibility to weld directly at the radius ends. Manufactured from durable stainless steel, it is designed to withstand the thermal stress and corrosive environments of high-performance automotive applications.

• Outer Diameter: 1.88 in
• Bend Angle: 90 Degree
• Wall Thickness: 16GA (0.065 in)
• Radius Type: 1.5D
• Center Line Radius (CLR): 2.82 in
• Configuration: Without Leg
• Manufacturer Part Number: 601-04856-3150

This Stainless Bros 90-degree mandrel bend is engineered for precision exhaust, header, or intake fabrication. Utilizing a mandrel bending process ensures the 1.88-inch tubing maintains a consistent inner diameter throughout the bend, preventing the flow restrictions common in crush-bent alternatives.

Featuring a tight 1.5D (2.82-inch) Center Line Radius (CLR), this component is ideal for tight engine bays or complex routing where space is at a premium. The unequal leg lengths of 5 inches and 8 inches provide ample material for trimming and fitment to your specific project requirements.

• Diameter: 1.88 in
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 2.82 in (1.5D)
• Leg Lengths: 5 in / 8 in
• Construction: Mandrel Bent
• Manufacturer Part Number: 601-04856-1150

This Stainless Bros 45-degree mandrel bend is engineered for precision fabrication in high-performance exhaust, intake, and coolant systems. Featuring a true 1.88-inch Center Line Radius (CLR), this "1D" bend provides an ultra-tight profile for complex plumbing in cramped engine bays or chassis sections without sacrificing flow velocity. Each piece is mandrel-bent to ensure a consistent internal diameter and wall thickness throughout the sweep.

The integrated legs provide extra material for easier alignment, clamping, or welding during custom fabrication projects. Built from 16-gauge stainless steel, this bend offers the durability and corrosion resistance required for professional-grade automotive builds.

• Outside Diameter: 1.88"
• Bend Angle: 45 Degrees
• Center Line Radius: 1.88" (1D)
• Wall Thickness: 16-Gauge (.065")
• Configuration: Mandrel Bent with Leg
• Manufacturer Part Number: 601-04826-4100

This Stainless Bros mandrel bend is a precision-engineered component designed for high-performance exhaust, intake, or cooling system fabrication. Utilizing a mandrel bending process ensures that the 1.88-inch diameter remains constant throughout the 45-degree curve, preventing the flow restrictions and turbulence common in crush-bent alternatives.

Crafted with extended leg lengths (5 inches and 8 inches), this bend provides fabricators with versatile trimming options to meet exact fitment requirements in restricted engine bays or chassis sections. The 1.5D bend radius (2.82-inch Center Line Radius) offers a tight yet efficient flow path for custom piping projects.

• Diameter: 1.88in
• Angle: 45 Degrees
• Bend Radius: 1.5D (2.82in Center Line Radius)
• Leg Lengths: 5in and 8in
• Mandrel bent for consistent wall thickness and optimal flow
• Manufacturer Part Number: 601-04826-1150

This Stainless Bros 90-degree mandrel bend is a precision fabrication component engineered for custom exhaust, intake, and cooling system assemblies. Mandrel bending ensures the tube maintains its internal diameter through the entire radius, eliminating the flow restrictions common in crush-bent piping.

Featuring a tight 1.5D radius ratio and a 2.65-inch center line radius (CLR), this bend is ideal for space-constrained engine bays or chassis routing. The inclusion of 2-inch straight legs (tangents) provides sufficient material for secure clamping or clean TIG welding into your custom project.

• Angle: 90 Degrees
• Bend Radius: 1.5D / 2.65" CLR
• Leg Length: 2" (Straight tangents)
• Construction: Mandrel Bent
• Manufacturer Part Number: 601-04556-4150

This Stainless Bros 180-degree mandrel bend is an essential component for high-performance fabrication, engineered to provide a consistent 1.50-inch diameter through the entire radius. By utilizing a mandrel bending process, this tube maintains uniform wall thickness and a smooth interior surface, preventing the flow restrictions common in crush-bent piping.

With a 1.5D (2.25-inch) center line radius and dual 6-inch straight legs, this U-bend provides the geometry and extra material required for custom exhaust systems, headers, or intake piping. The high-quality stainless steel construction ensures excellent corrosion resistance and weldability for professional-grade fabrication projects.

• Manufacturer Part Number: 601-03896-1150
• Material: Stainless Steel
• Outside Diameter: 1.50 in
• Bend Angle: 180 Degrees (U-Bend)
• Center Line Radius (CLR): 2.25 in (1.5D)
• Leg Length: 6 in (per side)

This Stainless Bros 90-degree mandrel bend is a precision-engineered component designed for high-performance fabrication where flow efficiency and internal volume are critical. By utilizing a mandrel bending process, this tube maintains a consistent diameter throughout the entire 90-degree sweep, preventing the restrictive necking common in crush-bent piping.

• Diameter: 1.50" (38.1mm) Outside Diameter
• Bend Angle: 90 Degrees
• Centerline Radius (CLR): 1.50" (1D)
• Construction: Mandrel bent for uniform wall thickness and optimal flow
• MPN: 601-03856-4100

Engineered for versatility, this 1.50-inch bend is ideal for custom exhaust manifolds, intake runners, and cooling system plumbing. The 1D (1.50-inch) CLR provides a tight, space-efficient radius without compromising exhaust gas velocity or structural integrity.

This Stainless Bros turbine discharge flange is precision-engineered for use with Precision Turbo turbine housings that utilize a 3.625-inch discharge. It serves as the critical mating point between the turbocharger and the exhaust system, providing a secure, leak-free connection for custom downpipe fabrication.

• Material: High-grade SS304 Stainless Steel for superior heat and corrosion resistance
• Inlet Diameter: 3.625 inches (mating side)
• Outlet Diameter: 3.5 inches (piping side)
• Manufacturing: CNC-machined for exact tolerances and flat sealing surfaces
• Manufacturer Part Number: 603-07614-6010

Constructed from durable SS304 stainless steel, this flange is designed to withstand the extreme thermal cycling found in high-performance turbocharged applications. The 3.5-inch outlet allows for a direct weld to standard 3.5-inch stainless steel tubing, simplifying the fabrication of your custom exhaust setup.

Constructed for high-performance fabrication, this Stainless Bros 180-degree mandrel bend provides a consistent 1.75-inch outer diameter throughout the entire radius. By utilizing a precision mandrel bending process, the tube maintains its shape without collapsing or wrinkling, ensuring maximum flow and structural integrity for custom exhaust systems, headers, or intake piping.

This U-bend features a 1.5D (2.62-inch) Center Line Radius (CLR), making it an ideal choice for tight routing in engine bays or chassis tunnels. Each bend is finished with two 6-inch straight legs, offering versatile trimming options for seamless welding and fitment in custom projects.

• Diameter: 1.75 in
• Bend Angle: 180 Degrees
• Center Line Radius (CLR): 2.62 in (1.5D)
• Leg Length: 6 in / 6 in
• Construction: Mandrel Bent Stainless Steel
• Manufacturer Part Number: 601-04596-1150

The Stainless Bros 1.75-inch 90-degree mandrel bend is a precision-engineered fabrication component designed for custom exhaust systems, headers, and intake piping. Unlike traditional crush bends that restrict flow, these mandrel-bent tubes maintain a consistent internal diameter throughout the entire radius to maximize exhaust velocity and engine efficiency.

Constructed for durability and ease of welding, this 90-degree elbow features a 1.5D Center Line Radius (CLR), providing a tight yet flow-efficient turn for confined engine bays or chassis routing. Each leg extends 6.5 inches from the bend tangent, offering plenty of material for trimming and custom fitment during the fabrication process.

• Diameter: 1.75 inches
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 2.625 inches (1.5D)
• Leg Lengths: 6.5 inches per side
• Manufacturing Process: Mandrel bent for uniform wall thickness
• Manufacturer Part Number: 601-04556-8150

This Stainless Bros 1-7/8-inch diameter straight tube is a versatile raw material engineered for high-end automotive fabrication. Measuring 48 inches in length, this 16-gauge tubing provides the ideal balance of structural integrity and weight savings for custom exhaust systems, headers, and intake piping.

Constructed from premium 304 stainless steel, this tubing offers exceptional corrosion resistance and maintains its strength under the high thermal stresses common in performance applications. The consistent wall thickness ensures predictable weld penetration and reliable fitment for professional fabricators and automotive enthusiasts.

• Brand: Stainless Bros
• Material: 304 Stainless Steel
• Outer Diameter: 1-7/8 in
• Wall Thickness: 16 Gauge (0.065 in)
• Length: 48 in
• MPN: 602-04846-0000

The Stainless Bros 3.0in Stainless Steel Fit Up Clamp is an essential fabrication tool designed for professional fabricators and DIY builders working with 3.0-inch OD tubing. This specialized clamp simplifies the mock-up process by providing precise alignment of two tube sections, allowing for accurate tack welding without the risk of joint slippage or misalignment.

Constructed entirely from high-grade stainless steel, this tool is built to withstand the heat and weld spatter common in shop environments. It is ideal for building custom exhaust systems, intake piping, and turbo manifolds where tight tolerances and perfect fitment are required before final welding. By securing the workpieces firmly, it ensures your project stays true to the desired geometry.

• Tubing Compatibility: 3.0" (76.2mm) Outside Diameter (OD)
• Material: Durable Stainless Steel construction
• Application: Tube alignment and tack welding for exhaust and intake systems
• Manufacturer Part Number: 619-07600-0100

The Stainless Bros 3.0in x 12.0in OAL muffler is engineered for custom exhaust fabricators seeking a balance of long-term durability and a show-quality finish. This universal component is constructed entirely from high-grade SS304 stainless steel, offering superior corrosion resistance compared to 400-series alternatives.

Designed to be integrated into custom-fabricated exhaust systems, this muffler features a straight-through design to maintain exhaust velocity while providing a refined tone. The mirror-polished finish ensures it looks as good as it performs, making it ideal for visible exhaust exits or under-chassis builds where aesthetics matter.

• Material: T304 Stainless Steel (SS304)
• Finish: Mirror Polished
• Inlet/Outlet Diameter: 3.0in
• Overall Length (OAL): 12.0in
• Construction: Fully welded for maximum durability
• Manufacturer Part Number: 616-07613-2100

The Stainless Bros bullet resonator is engineered to effectively reduce exhaust rasp and cabin drone without restricting airflow. Featuring a compact 4-inch body diameter and a 12.0-inch overall length, this resonator is an ideal solution for custom exhaust builds where space is limited but sound suppression is required.

• Inlet/Outlet Diameter: 3.0 inches
• Body Diameter: 4.0 inches
• Overall Length: 12.0 inches
• Construction: High-quality stainless steel for superior corrosion resistance and durability
• Design: Straight-through perforated core for maximum flow and high-frequency noise reduction
• Manufacturer Part Number: 615-07636-0111

Constructed for professional-grade exhaust fabrication, the Stainless Bros 3.0-inch x 4-inch OAL flex joint is engineered to handle the thermal expansion and high-frequency vibrations of high-performance engines. This 304 stainless steel component acts as a critical buffer, preventing stress cracks in manifolds and downpipes by allowing for controlled movement within the exhaust system.

The internal interlock liner is a significant upgrade over standard mesh liners, offering a smooth internal surface that maximizes exhaust flow velocity while shielding the outer bellows from extreme heat. This design is particularly well-suited for turbocharged applications where high exhaust gas temperatures (EGTs) are common and durability is non-negotiable.

• Material: 304 Stainless Steel
• Inner Diameter: 3.0 in
• Overall Length (OAL): 4.0 in
• Liner Type: High-Flow Interlock
• Manufacturer Part Number: 612-07604-1000

Streamline your custom exhaust or intake fabrication with the Stainless Bros 5-pack of 3.50-inch 1D tight radius pie cuts. These 16-gauge components are designed specifically for high-clearance applications where traditional mandrel bends cannot fit. By using a 1D Center Line Radius (CLR), which matches the tube diameter, fabricators can achieve extremely tight turns in cramped engine bays or chassis tunnels without compromising flow path integrity.

• Manufacturer: Stainless Bros
• Part Number: 609-08901-0016
• Outside Diameter: 3.50 in
• Center Line Radius: 3.5 in (1D)
• Wall Thickness: 16 Gauge
• Quantity: 5-Pack

Each pie cut is precision-manufactured to ensure consistent fitment and clean weld seams, making them an essential choice for professional-grade turbo manifolds, downpipes, and custom plumbing projects. These cuts allow for modularity and precise angle control during the tacking and final TIG welding process.

Streamline your custom fabrication projects with this 5-pack of Stainless Bros 3.0-inch 16 gauge pie cuts. Engineered for high-clearance applications, these segments feature a 1D (1 x Diameter) tight radius, resulting in a 3-inch Center Line Radius (CLR). This geometry allows fabricators to navigate tight engine bays or chassis constraints where traditional mandrel bends are too bulky.

• Diameter: 3.0" OD
• Wall Thickness: 16 Gauge (.065")
• Radius: 1D / 3" CLR (Tight Radius)
• Material: High-quality Stainless Steel
• Quantity: 5-piece pack
• Manufacturer Part Number: 609-07601-0016

Each segment is precision-cut to ensure consistent fitment and clean weld penetration. These pie cuts are essential for building professional-grade custom exhaust systems, intake piping, or turbo manifolds that require precise, tight-radius turns without sacrificing flow integrity.

The Stainless Bros 12-inch hanger rod is a professional-grade solution for custom exhaust fabrication and secure system mounting. With a 3/8-inch outside diameter, this rod provides the necessary rigidity to support exhaust components while maintaining a slim profile for tight clearances.

A critical feature of this rod is the integrated mushroom end. This flared tip is designed to securely retain rubber exhaust isolators and bushings, preventing them from sliding off due to driveline vibration, thermal expansion, or aggressive driving. Manufactured from high-quality stainless steel, this rod offers excellent corrosion resistance and weldability for long-term durability in harsh undercar environments.

• Brand: Stainless Bros
• Part Number: 608-03500-0012
• Outside Diameter: 3/8in
• Length: 12.0in
• End Style: Mushroom End (Bushing Retainer)
• Material: Stainless Steel