This Stainless Bros 2.25-inch diameter mandrel bend is engineered for high-performance fabrication, providing a consistent internal diameter throughout the entire 180-degree sweep. Featuring a tight 1.5D (3.375-inch) center line radius (CLR), this U-bend is ideal for tight packaging requirements in custom exhaust systems, intake piping, or cooling paths where flow efficiency is critical.

Each bend is manufactured with dual 6-inch legs, offering ample straight material for precise trimming and welding into your specific project. Unlike standard crush-bent tubing, the mandrel bending process ensures there is no restrictive "necking" or diameter reduction at the bend, maintaining maximum flow velocity.

• Diameter: 2.25 inches
• Bend Angle: 180 Degrees (U-Bend)
• Center Line Radius (CLR): 3.375 inches (1.5D)
• Leg Length: 6 inches (Dual legs)
• Manufacturer Part Number: 601-05796-1150

Constructed from premium 304 stainless steel, this Stainless Bros 90-degree elbow is designed for high-performance exhaust and intake fabrication where space is limited. Featuring a tight 1D (one diameter) bend radius, it provides a 2.25-inch Center Line Radius (CLR) to maintain consistent wall thickness and flow characteristics through tight turns.

The "No Leg" configuration offers the tightest possible packaging for custom manifold or exhaust work, allowing the bend to start immediately at the weld joint. This mandrel-bent component utilizes 16-gauge (.065-inch) tubing, providing the industry standard for durability and weldability in professional automotive applications.

• Material: SS304 Stainless Steel
• Outside Diameter: 2.25 in
• Bend Angle: 90 Degree
• Center Line Radius: 2.25 in (1D)
• Wall Thickness: 16GA / .065 in
• Bend Type: Mandrel Bend (No Leg)
• Manufacturer Part Number: 601-05756-3100

This Stainless Bros 90-degree mandrel bend is engineered for precision fabrication in high-performance exhaust, intake, and cooling systems. Designed with a tight 1D center line radius (CLR), this component allows for compact routing in tight engine bays or chassis tunnels without sacrificing flow efficiency. Unlike standard crush bends, the mandrel-bending process maintains a consistent internal diameter throughout the entire 90-degree sweep to minimize backpressure and turbulence.

• Outer Diameter: 2.0 inches
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 2.0 inches (1D)
• Construction: Mandrel-bent for uniform wall thickness and flow
• Material: High-grade Stainless Steel
• Manufacturer Part Number: 601-05056-4100

This Stainless Bros 90-degree mandrel bend is engineered for custom fabrication where flow efficiency and space constraints are critical. Unlike standard pipe bends that can collapse or wrinkle, this mandrel-bent tubing maintains a constant 2.0-inch outer diameter throughout the entire radius to ensure maximum exhaust or intake flow.

Designed with a "No Leg" configuration, this component terminates immediately at the end of the 90-degree sweep, providing a compact solution for tight engine bays or complex plumbing routes. It features a tight 1.5D (3-inch Center Line Radius), making it a versatile choice for high-performance exhaust manifolds, downpipes, and intake systems.

• Outer Diameter: 2.0 inches
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 3.0 inches (1.5D)
• Leg Length: No Leg (Tangent-free)
• Construction: Precision Mandrel Bent
• Manufacturer Part Number: 601-05056-3150

This Stainless Bros 45-degree no-leg elbow is designed for tight-clearance exhaust and intake fabrication. Engineered from high-grade SS304 stainless steel, this component provides superior corrosion resistance and durability in high-temperature environments. The "no leg" design allows for precise fitment in compact engine bays where traditional long-tangent elbows would require excessive trimming.

With a consistent 16GA (.065-inch) wall thickness, this bend is ideal for TIG welding, ensuring uniform heat distribution and a professional finish. This part is a staple for custom manifolds, downpipes, and specialized plumbing projects requiring a precise 2.0-inch outer diameter.

• Material: SS304 Stainless Steel
• Outside Diameter: 2.0in
• Bend Angle: 45 Degrees
• Wall Thickness: 16GA / .065in
• Design: No Leg (Short Radius)
• Manufacturer Part Number: 601-05026-3100

This Stainless Bros 90-degree mandrel bend is engineered for high-performance automotive fabrication, specifically where space is restricted. Featuring a 1D radius, the bend maintains a tight 1.75-inch Center Line Radius (CLR), allowing for compact routing of exhaust, intake, or cooling systems without sacrificing flow efficiency.

Unlike standard crush bends that create turbulence and restrictive necking, these mandrel-bent tubes provide a consistent internal diameter throughout the entire 90-degree sweep. Each bend includes 2-inch straight legs, offering sufficient material for precise trimming and TIG welding to adjacent components.

• Outer Diameter: 1.75 in
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 1.75 in (1D)
• Leg Length: 2 in
• Construction: Mandrel bent for maximum flow velocity
• Part Number: 601-04556-4100

This Stainless Bros 90-degree mandrel bend is engineered for high-performance fabrication where space and flow are critical. Featuring a 1.5-inch outer diameter and a tight 2.625-inch Center Line Radius (CLR), this 1.5D ratio bend provides consistent wall thickness and smooth internal flow for custom exhaust systems, headers, or intake piping.

The "No Leg" design eliminates excess straight tubing, allowing fabricators to place bends in extremely tight configurations without the need for additional trimming. Every bend is precision-manufactured to ensure ease of welding and perfect alignment during your custom build.

• Diameter: 1.5 inch
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 2.625 inch
• Radius Ratio: 1.5D
• Style: No Leg (tight radius)
• Construction: Mandrel Bent
• Part Number: 601-04556-3150

The Invidia Stock Downpipe to 3-inch Catback Adapter (HS02SWIAPE) is a precision-engineered solution for Subaru owners mating mismatched exhaust components. This adapter is specifically designed to bridge the gap between the factory downpipe—which utilizes a flared donut gasket connection—and a 3-inch (76mm) flat-flange aftermarket catback exhaust system.

• Prevents exhaust leaks common when mating OEM donut gaskets to flat aftermarket flanges
• Ensures a secure, flush seal for optimal exhaust flow and backpressure management
• Simple bolt-on installation using factory mounting points
• Durable construction designed to withstand high-heat cycles and corrosive exhaust gases
• Manufacturer Part Number: HS02SWIAPE

Whether you are installing an Invidia Q300, N1, or another 3-inch catback system while retaining your stock downpipe, this adapter provides the necessary transition to maintain system integrity without the need for custom fabrication or welding.

Fits 2008-2021 Subaru WRX and STI.

The Invidia HS02SWIAPD 3" Downpipe to 2.5" Exhaust Adapter is the professional solution for eliminating exhaust leaks when mating mismatched piping diameters. When upgrading to a high-flow 3-inch downpipe while retaining the factory 2.5-inch cat-back exhaust (or an aftermarket street-spec system), the flange interface often fails to seal properly. This adapter bridges that gap, providing a secure, flared transition that ensures optimal exhaust flow without the soot-staining leaks common with makeshift gasket stacking.

Precision-manufactured to withstand the high thermal loads of turbocharged EJ and FA engines, this adapter is a necessary component for a clean, reliable exhaust installation. It maintains correct backpressure characteristics and ensures your exhaust system remains quiet and efficient at the flange junction.

• Manufacturer Part Number: HS02SWIAPD
• Inlet Diameter: 3 inches
• Outlet Diameter: 2.5 inches
• Construction: High-grade stainless steel for corrosion resistance
• Application: Connects 3-inch aftermarket downpipes to 2.5-inch cat-back exhaust systems