Engineered for high-performance fabrication, the Stainless Bros 5-inch 90-degree mandrel bend elbow (MPN 601-12756-3100) offers a precision solution for tight-clearance plumbing. Unlike standard crush bends, the mandrel bending process ensures the tube maintains its full 5-inch diameter throughout the entire 90-degree sweep, eliminating flow restrictions and turbulence in exhaust, intake, or cooling systems.

• Diameter: 5.00 inches
• Bend Angle: 90 Degrees
• Centerline Radius: 1D (5.00 inches)
• Construction: Precision mandrel bent for uniform wall thickness
• Material: High-grade stainless steel for maximum durability and weldability
• Manufacturer Part Number: 601-12756-3100

The 1D radius configuration is specifically designed for fabricators working in constrained spaces where a traditional larger radius bend will not fit. This component is suitable for custom diesel exhaust systems, large-bore turbo inductions, and industrial piping applications where maintaining maximum volumetric flow is critical.

This Stainless Bros 90-degree elbow is engineered for high-performance exhaust, intake, and intercooler fabrication where precision and durability are paramount. Constructed from premium 304 stainless steel (SS304), this 4-inch mandrel-bent elbow features a tight 1.5D radius and a "No Leg" design, making it an ideal choice for custom routing in compact engine bays where space is at a premium.

• Material: 304 Stainless Steel (SS304)
• Outer Diameter: 4.00 inches
• Bend Angle: 90 Degrees
• Bend Radius: 1.5D
• Wall Thickness: 16-Gauge (0.065")
• Design: No Leg (No straight tangents)
• Manufacturer Part Number: 601-10256-3150

The 16-gauge wall thickness ensures excellent weldability and structural integrity while minimizing weight. This component is designed for professional fabricators requiring consistent wall thickness and high corrosion resistance for high-end automotive projects.

This Stainless Bros 4-inch 45-degree elbow is a precision-engineered component designed for high-performance exhaust fabrication, intake piping, and custom forced induction setups. Manufactured from high-grade SS304 stainless steel, it provides excellent corrosion resistance and durability under high-heat conditions.

Featuring a 1.5D (6-inch) centerline radius, this mandrel-bent elbow maintains a consistent 4-inch diameter throughout the bend to ensure maximum flow efficiency and minimal turbulence. The 16-gauge (.065-inch) wall thickness is the industry standard for automotive fabrication, offering the necessary wall mass for clean TIG welding without excessive weight. This "no leg" version is cut at the tangent, making it ideal for tight packaging where every millimeter of clearance matters.

• Material: 304 Stainless Steel (SS304)
• Outside Diameter: 4.00 inches
• Wall Thickness: 16GA (.065")
• Bend Angle: 45 Degrees
• Centerline Radius: 1.5D (6.0")
• Finish: Raw/Brushed
• Part Number: 601-10226-3150

This Stainless Bros 3.5-inch 45-degree bend elbow is a high-grade fabrication component designed for custom exhaust systems, turbo manifolds, and intake plumbing. Constructed from premium 304 stainless steel, it provides excellent corrosion resistance and durability for high-heat automotive environments.

Engineered for tight packaging, this mandrel bend features a 1D (one times the diameter) center line radius, allowing for efficient routing in compact engine bays. The 16-gauge (.065-inch) wall thickness ensures structural integrity while remaining compatible with standard TIG welding processes. Each elbow includes straight leg extensions to simplify fitment and welding to adjacent tubing.

• Material: 304 Stainless Steel
• Outer Diameter: 3.5 inches
• Bend Angle: 45 Degrees
• Center Line Radius (CLR): 1D / 3.5 inches
• Wall Thickness: 16GA / 0.065 inches
• Construction: Mandrel Bent
• Manufacturer Part Number: 601-08926-4100

This Stainless Bros 3-inch 90-degree mandrel bend is engineered for high-performance exhaust and intake fabrication where space is at a premium. Featuring a 3-inch Center Line Radius (CLR)—representing a 1D ratio—this bend provides a tight, consistent radius without the flow-restricting deformation or thinning found in standard crush-bent tubing.

The "No Leg" design means the bend terminates at the tangent points, allowing for maximum flexibility and precise fitment in compact engine bays or tight chassis tunnels. This component is essential for fabricators building custom headers, downpipes, or intercooler piping that requires uniform wall thickness and professional-grade stainless steel construction.

• Diameter: 3.0 inches
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 3.0 inches (1D)
• Leg Configuration: No Leg (Tangent-to-Tangent)
• Construction Type: Mandrel Bent
• Manufacturer Part Number: 601-07656-3100

This Stainless Bros 3-inch 45-degree leg mandrel bend is engineered for fabricators building high-performance exhaust systems, intake paths, and custom turbo plumbing. Using a mandrel bending process, the tube maintains a consistent internal diameter and wall thickness throughout the 45-degree sweep, preventing the flow restrictions often found in crush-bent alternatives.

Constructed from premium stainless steel, this bend features extended legs to provide extra material for precise trimming, fitment, and welding. The 4.5-inch Center Line Radius (CLR) follows a 1.5D specification, offering an ideal balance between tight-packaging capability and optimal exhaust scavenging.

• Diameter: 3 inches
• Bend Angle: 45 Degrees
• Center Line Radius (CLR): 4.5 inches (1.5D)
• Material: Stainless Steel
• Bend Type: Mandrel Bent with Extended Legs
• Manufacturer Part Number: 601-07626-4150

This Stainless Bros 180-degree mandrel bend is engineered for fabricators building custom exhaust systems, intake piping, or cooling solutions where tight clearances and maximum flow are critical. Utilizing a precision mandrel-bending process, this tube maintains a consistent 2.50-inch diameter throughout the bend, preventing the flow restrictions often found in crush-bent alternatives.

Featuring a 1.5D (3.75-inch) center line radius, this U-bend provides a compact turn without sacrificing structural integrity. Each side includes a 6-inch straight leg, giving you sufficient material for custom trimming, fitting, and welding into your specific layout.

• Diameter: 2.50in OD
• Bend Angle: 180 Degree (U-bend)
• Radius: 1.5D / 3.75in CLR (Center Line Radius)
• Leg Length: 6in / 6in
• Construction: Precision Mandrel Bent
• MPN: 601-06396-1150

This Stainless Bros 90-degree mandrel bend is engineered for high-performance fabrication projects where flow efficiency and space constraints are critical. Featuring a tight 1D (1 x Diameter) centerline radius, this 2.50-inch diameter tube maintains its internal cross-section throughout the bend, preventing the turbulence and restriction common with crush-bent alternatives.

• Outer Diameter: 2.50 inches
• Bend Angle: 90 Degrees
• Centerline Radius (CLR): 2.50 inches (1D)
• Construction: Precision mandrel bent for consistent wall thickness and flow
• Manufacturer Part Number: 601-06356-4100

Ideal for custom exhaust systems, turbo manifolds, and intake piping, this mandrel bend provides the material consistency needed for professional-grade welding and assembly in tight-clearance environments.

This Stainless Bros mandrel bend is engineered for precision exhaust fabrication, intake piping, and custom cooling systems. By utilizing a mandrel bending process, the tube maintains its full 2.50-inch diameter throughout the 90-degree curve, ensuring maximum flow and minimal turbulence compared to standard crush bends.

• Outer Diameter: 2.50 in
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 3.75 in (1.5D)
• Leg Lengths: 5 in and 8 in
• Construction: Mandrel bent for uniform wall thickness and flow
• Manufacturer Part Number: 601-06356-1150

These bends are ideal for professional fabricators requiring consistent tolerances for headers, downpipes, and high-performance plumbing applications.

The Stainless Bros 2.50-inch 45-degree mandrel bend is a critical component for fabricators building high-flow exhaust or intake systems. By utilizing a mandrel bending process, the tube maintains its 2.50-inch cross-section throughout the entire 45-degree arc, ensuring minimal turbulence and backpressure compared to standard crush-bent alternatives.

• Diameter: 2.50"
• Bend Angle: 45 Degrees
• Bend Radius: 1.5D (3.75" Center Line Radius)
• Fabrication Style: Mandrel bent leg
• Manufacturer Part Number: 601-06326-4150

Designed for precise fitment in custom automotive applications, this bend provides the consistent wall thickness and geometry required for professional welding and assembly in performance exhaust, downpipes, and intercooler piping.

Fabricate custom exhaust systems or intake plumbing with precision using the Stainless Bros 2.50in 45-degree mandrel bend. Engineered for high-performance applications where space is at a premium, this tight 1D radius bend ensures maximum flow efficiency without the diameter restriction typical of crush-bending. The "no leg" configuration provides a clean bend that ends right at the tangent point, making it an ideal choice for compact assemblies, header fabrication, and intricate pie-cutting projects.

• Diameter: 2.50in
• Bend Angle: 45 Degrees
• Centerline Radius: 1D (2.50in)
• Finish: Natural
• Leg Style: No Leg (Tangent Point End)
• Manufacturer Part Number: 601-06326-3100

This 90-degree mandrel bend from Stainless Bros is engineered for high-precision custom fabrication where space is at a premium. Featuring a 1.75-inch outside diameter and a matching 1.75-inch Center Line Radius (CLR), this 1D bend maintains consistent tube geometry and flow characteristics throughout the curve.

Designed with a specialized "no leg" configuration, this component is ideal for tight-clearance applications such as manifold construction, compact exhaust routing, or cooling system plumbing. The mandrel bending process ensures there is no thinning or collapsing of the tube walls, providing a high-strength foundation for TIG or MIG welding projects.

• Brand: Stainless Bros
• Part Number: 601-04556-3100
• Outside Diameter: 1.75 inch
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 1.75 inch (1D)
• Wall Thickness: .65 inch
• Configuration: No Leg (End-to-End Bend)
• Process: Mandrel Bent

This Stainless Bros 1.75-inch diameter 45-degree mandrel bend is engineered for professional-grade custom fabrication, including exhaust systems, headers, and intake tracks. Mandrel bending ensures the tubing maintains a constant internal diameter throughout the bend, eliminating the flow-restricting profile changes found in standard crush-bent piping.

This component features a 1.5D (2.62-inch) Center Line Radius (CLR), providing a compact yet efficient flow path. With generous 6.5-inch leg lengths on both sides, fabricators have ample material for precise trimming, welding, and fitment in complex automotive layouts. Built by Stainless Bros to exacting tolerances, this bend provides the consistency required for high-performance builds.

• Diameter: 1.75 in
• Bend Angle: 45 Degrees
• Center Line Radius (CLR): 2.62 in (1.5D)
• Leg Length: 6.5 in (Both Legs)
• Construction: Precision Mandrel Bent
• Manufacturer Part Number: 601-04526-8150

This Stainless Bros 45-degree mandrel bend elbow is a professional-grade solution for custom automotive fabrication. Constructed from premium 304 stainless steel (SS304), it offers superior corrosion resistance and durability for high-heat applications like exhaust systems, intake piping, and cooling paths. The mandrel bending process maintains a consistent internal diameter throughout the 45-degree sweep, ensuring optimal flow characteristics for your custom project.

• Material: 304 Stainless Steel (SS304)
• Outside Diameter: 1.75 inch
• Bend Angle: 45 Degree
• Bend Radius: 1.5D / 2.625 inch Center Line Radius (CLR)
• Wall Thickness: 16GA / .065 inch
• Features: Integrated tangent legs for easier alignment and welding
• Part Number: 601-04526-4150

This Stainless Bros 90-degree mandrel bend is engineered for high-precision fabrication in tight engine bays or custom exhaust systems. Featuring a 1.50-inch outside diameter and a matching 1.50-inch center line radius (1D), this component provides the tightest possible turn while maintaining consistent wall thickness and internal diameter for optimal flow.

• Diameter: 1.50"
• Bend Angle: 90 Degrees
• Center Line Radius (CLR): 1.50" (1D)
• Style: No Leg (cut at the radius for tight packaging)
• Mandrel bent to prevent wrinkling or collapse
• Manufacturer Part Number: 601-03856-3100

The "no leg" design is specifically intended for builders who need to weld directly to the radius, making it an essential component for custom manifold construction, cooling system hard lines, or compact intake piping where space is at a premium.

The Vibrant 2698 180-degree U-bend is a precision-engineered component designed for custom exhaust systems, headers, and intake piping. Mandrel-bent from high-grade 16-gauge (0.065") T304 stainless steel, this bend maintains its 2-inch outer diameter throughout the entire radius to ensure maximum flow and structural integrity without the necking found in crush-bent tubing.

Designed for professional fabricators, this U-bend features a 2.5-inch centerline radius, making it ideal for tight routing where space is at a premium. The material is supplied with a clean finish and dimensional accuracy, requiring minimal preparation before TIG or MIG welding.

• Material: T304 Stainless Steel
• Wall Thickness: 16-gauge (0.065")
• Outside Diameter (O.D.): 2.00"
• Centerline Radius (CLR): 2.50"
• Bend Angle: 180 Degrees (U-Bend)
• Manufacturer Part Number: 2698

This 180-degree mandrel-bent tubing is engineered for high-performance exhaust systems, headers, and custom intake piping. Fabricated from 16-gauge (0.065") T304 stainless steel, this Vibrant U-bend offers superior corrosion resistance and durability for professional-grade automotive fabrication.

Each bend is produced using mandrel-bending technology to ensure a uniform cross-section, maintaining consistent flow and preventing the thinning or necking common in crush-bent alternatives. The material provides excellent dimensional accuracy and requires minimal surface preparation before TIG or MIG welding.

• Material: T304 Stainless Steel
• Outer Diameter: 1.875" (1-7/8")
• Centerline Radius: 2.875"
• Wall Thickness: 16-Gauge (0.065")
• Bend Angle: 180 Degrees (U-Bend)
• Manufacturer Part Number: 2697

The Vibrant Performance 2693 straight reducer provides a professional solution for fabricators transitioning between 4.0-inch and 2.0-inch tubing. Whether you are building a custom exhaust system, intake plumbing, or intercooler piping, this transition ensures a clean, streamlined connection in high-performance applications.

Manufactured from high-quality 304 stainless steel, this component is built to withstand high temperatures and resist corrosion over time. The material is specifically selected for its excellent weldability, allowing for clean, strong joints when using TIG or MIG welding processes.

• Part Number: 2693
• Material: 304 Stainless Steel
• Large End Diameter: 4.0in
• Small End Diameter: 2.0in
• Configuration: Straight Reducer / Transition

The Vibrant Performance 2692 straight reducer provides a professional-grade solution for fabricators needing to transition between different tubing diameters. Constructed from T304 stainless steel, this component offers excellent corrosion resistance and is designed for easy welding in custom exhaust, intake, or cooling system applications.

• Material: T304 Stainless Steel
• Large End Diameter: 3.0 in. OD
• Small End Diameter: 1.5 in. OD
• Overall Length: 6.0 in.
• Configuration: Straight Reducer / Transition
• Part Number: 2692

This 6-inch length transition allows for a gradual reduction in diameter, helping to maintain flow efficiency while providing a secure mounting point for custom fabrication projects.

The Vibrant Performance 2687 straight reducer provides a professional-grade solution for fabricators transitioning between different tubing diameters. Engineered from high-quality 304 stainless steel, this transition is designed to withstand the heat and corrosive environments typical of exhaust, intake, and cooling systems while maintaining structural integrity.

This component features a concentric taper to ensure smooth flow and is precision-formed for easy fitment and welding. Whether you are building a custom exhaust manifold, downpipe, or intake runner, these transitions simplify the fabrication process by eliminating the need for makeshift adapters.

• Material: 304 Stainless Steel
• Inlet Diameter: 1.5in OD
• Outlet Diameter: 1in OD
• Construction: Straight Reducer / Transition
• Manufacturer Part Number: 2687
• Weld-ready finish for clean fabrication

The Vibrant Performance 2686 T304 Stainless Steel Straight Reducer provides a precise solution for fabricators transitioning between tubing diameters in exhaust, intake, or cooling systems. Engineered for dimensional accuracy, this straight taper transition allows for smooth flow and professional-grade fitment in tight configurations.

Constructed from 16-gauge (0.065") 304 stainless steel, this reducer offers excellent corrosion resistance and durability. The high-quality material requires minimal preparation for welding, making it a reliable choice for custom fabrication projects where material consistency is paramount.

• Manufacturer Part Number: 2686
• Material: T304 Stainless Steel
• Wall Thickness: 16-Gauge (0.065")
• Small End Diameter: 2.00" OD
• Large End Diameter: 2.50" OD
• Overall Length: 2.00"
• Application: Universal weld-on transition

The Vibrant Performance 2685 straight reducer provides a professional-grade solution for transitioning between 1.5-inch and 2-inch OD tubing. Specifically designed for high-performance fabrication, this transition is manufactured from T304 stainless steel with a 16-gauge wall thickness, ensuring excellent corrosion resistance and structural integrity under heat and stress.

• Constructed from premium T304 stainless steel for maximum durability
• 16-gauge (0.065") wall thickness compatible with standard tubing
• Straight taper design for smooth flow transitions
• Weld-ready finish requires minimal preparation for TIG or MIG fabrication
• Inlet/Outlet: 1.5" OD to 2" OD
• Overall Length: 2.000"
• Manufacturer Part Number: 2685

The Vibrant 2659 T304 Stainless Steel Mandrel U-Bend is engineered for fabricators requiring high dimensional accuracy and material consistency for custom exhaust systems, intakes, and cooling paths. Mandrel-bent to maintain a constant inner diameter through the entire 180-degree arc, this component minimizes flow restriction and turbulence in high-performance applications.

Constructed from 16-gauge (0.065") T304 stainless steel, this U-bend offers superior corrosion resistance and durability under high-heat conditions. The material arrives with a clean finish that requires minimal surface preparation for TIG or MIG welding, ensuring a professional result for custom fabrication projects.

• Material: T304 Stainless Steel
• Outer Diameter (O.D.): 5.000"
• Wall Thickness: 16-Gauge (0.065")
• Centerline Radius (CLR): 7.500"
• Bend Angle: 180 Degrees (U-Bend)
• Manufacturer Part Number: 2659

This Vibrant Performance 180-degree U-bend is a professional-grade component designed for custom exhaust systems, turbo manifolds, and intake plumbing. Mandrel-bent to maintain a consistent inner diameter throughout the radius, this 4-inch O.D. bend ensures optimal flow and minimizes turbulence in high-performance applications.

• Constructed from high-grade T304 stainless steel for superior corrosion resistance and durability
• Precision mandrel-bent 180-degree U-bend profile
• 16-gauge (0.065") wall thickness provides the ideal balance of weight and strength
• 6-inch centerline radius (CLR) for precise fabrication requirements
• Natural finish requires minimal surface preparation for TIG or MIG welding
• Manufacturer Part Number: 2658

This Vibrant T304 stainless steel straight tubing provides a high-quality foundation for custom automotive fabrication projects. Engineered for professional fabricators, this 5-foot section of tubing offers material consistency and dimensional accuracy, making it an ideal choice for large-bore exhaust systems, intake piping, or heavy-duty cooling applications.

Constructed from 16-gauge (0.065") T304 stainless steel, this tubing maintains structural integrity under thermal stress while remaining easy to weld. Each length is produced to high standards, requiring minimal surface preparation for TIG or MIG welding processes.

• Material: T304 Stainless Steel
• Outside Diameter (O.D.): 5.000 inches
• Wall Thickness: 16 Gauge (0.065 inches)
• Length: 5 Feet
• Mandrel-grade straight section for consistent flow
• Manufacturer Part Number: 2649

Vibrant Performance T304 stainless steel straight tubing provides fabricators with a reliable, corrosion-resistant foundation for custom exhaust systems, intake plumbing, and structural automotive applications. This 16-gauge wall thickness tubing is engineered for material consistency and dimensional accuracy, ensuring clean fitment during complex builds.

Constructed from high-grade T304 stainless steel, this tubing offers excellent heat resistance and durability. The surface is prepared to require minimal cleaning before welding, making it an efficient choice for professional shops and DIY fabricators alike. This five-foot straight section is ideal for long runs where mandrel bends are not required.

• Product Type: Straight Tubing
• Material: T304 Stainless Steel
• Outer Diameter: 2.75" (69.85mm)
• Wall Thickness: 16-Gauge (0.065")
• Length: 5 Feet (1.52m)
• Manufacturer Part Number: 2648
• Application: Universal fabrication for exhaust, intake, and cooling systems

This 5-foot length of Vibrant Performance T304 stainless steel straight tubing is engineered for professional fabricators who require material consistency and dimensional accuracy. Constructed with a 16-gauge wall thickness, this tubing provides the durability and corrosion resistance necessary for custom exhaust systems, intake piping, and high-performance plumbing.

The T304 alloy ensures long-term reliability in high-heat environments and arrives ready for fabrication, requiring minimal surface preparation for clean, high-quality welding. Whether building a custom manifold or a complete exhaust system, this tubing offers the precise tolerances needed for professional-grade results.

• Manufacturer Part Number: 2647
• Material: T304 Stainless Steel
• Outer Diameter (O.D.): 2.375 in
• Wall Thickness: 16 Gauge (0.065 in)
• Total Length: 5 Feet
• Fabrication: Minimal preparation required for welding

Vibrant Performance T304 Stainless Steel straight tubing is engineered for professional fabricators building custom exhaust systems, intake tracts, and cooling components. This 16-gauge (0.065-inch) wall tubing provides the material consistency and dimensional accuracy required for high-performance automotive applications where corrosion resistance and heat management are essential.

Constructed from high-grade T304 stainless steel, this tubing features a smooth finish that requires minimal preparation for welding. Whether you are fabricating a custom header or a complete cat-back exhaust, this straight section offers the reliable wall thickness and structural integrity needed for long-term durability under stress.

• Material: T304 Stainless Steel
• Outer Diameter: 2.125 in
• Wall Thickness: 16 Gauge (0.065 in)
• Length: 5 Feet
• Part Number: 2646
• Ideal for custom headers, exhaust systems, and turbo plumbing
• Consistent dimensions for easier fitment and fabrication

Vibrant Performance T304 stainless steel straight tubing provides the material consistency and dimensional accuracy required for precision automotive fabrication. This 2-inch O.D. tubing is an essential building block for custom exhaust systems, downpipes, intake plumbing, and cooling lines where durability and corrosion resistance are critical.

• Manufactured from high-grade T304 stainless steel for long-term reliability
• 16-gauge (0.065") wall thickness balances weight and structural integrity
• Clean, uniform finish requires minimal preparation for TIG or MIG welding
• Consistent 2.00-inch outside diameter ensures smooth transitions and fitment
• Supplied in a convenient 5-foot length for various project scales
• Manufacturer Part Number: 2645

Vibrant Performance T304 Stainless Steel straight tubing is engineered for fabricators building custom exhaust systems, intake plumbing, and cooling components. This 5-foot section provides the material consistency and dimensional accuracy required for professional welding and tight-tolerance fitment.

Constructed from high-quality 304 stainless steel with a 16-gauge (0.065") wall thickness, this tubing offers exceptional corrosion resistance and durability. The clean surface finish requires minimal preparation before TIG or MIG welding, ensuring efficient fabrication and high-integrity joints.

• Material: T304 Stainless Steel
• Outer Diameter (O.D.): 4.00 in
• Wall Thickness: 16 Gauge (0.065 in)
• Length: 5 Feet
• Style: Straight Tubing
• Manufacturer Part Number: 2644