What is a mandrel bend and why is it important for exhaust tubing?

A mandrel bend is created using a flexible mandrel inside the tube during the bending process. This prevents the tube from collapsing or kinking, ensuring a smooth, consistent inner diameter. This is important for custom exhaust builds where smooth airflow is key to performance.

What does '1.5D / 6in CLR' mean for this bend?

The '1.5D' refers to the bend ratio relative to the tube's diameter, indicating a tighter bend. The '6in CLR' specifies the radius measured from the center of the tube to the center of the bend, giving you a precise curve for fabrication.

What material is this exhaust tubing made from?

This tubing is made from stainless steel. Stainless steel is a popular choice for exhaust components because it offers good resistance to heat and corrosion, helping it last longer in harsh undercar conditions.

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Specifications

Brand: Stainless Bros
Part #: 601-10256-4150
UPC: 601-10256-4150

Stainless Bros 4in Diameter 1.5D / 6in CLR 90 Degree Bend Leg Mandrel Bend

Name: Stainless Bros 4in Diameter 1.5D / 6in CLR 90 Degree Bend Leg Mandrel Bend
Brand: Stainless Bros
SKU: stainless-bros-stainless-bros-4in-diameter-1-5d-6in-clr-90-degree-bend-leg-mandr-t14-314197
Price: 76.79 USD
Availability: InStock

$76.79

Only 1 left in stock

Key Features

Fits Stainless Bros 601-10256-4150.
4-inch outer diameter tubing.
Features a 90-degree bend with a 6-inch centerline radius (CLR).
1.5D bend designation indicates a tighter radius bend.
Constructed from stainless steel for corrosion resistance.
Mandrel bent to maintain consistent diameter through the bend.

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About this part

Product Details

Stainless Bros is known for providing well-built stainless steel exhaust components. This 4-inch diameter, 90-degree bend leg is a piece of mandrel-bent tubing, perfect for custom exhaust fabrication projects. The 1.5D designation means it has a tight bend radius, while the 6-inch CLR (centerline radius) gives you a specific curve to work with.

This tubing is made from stainless steel, which is a solid choice for exhaust systems because it holds up well against heat and corrosion. The mandrel bending process ensures that the tube maintains its diameter throughout the bend, unlike crush bends which can restrict flow. This is important for custom exhaust builds where smooth airflow is key to performance.

This part is ideal for fabricators and DIYers looking to build or repair exhaust systems, headers, or other custom tubing applications. You'll need to cut and weld this piece to integrate it into your existing or new exhaust setup.