What is SS321 stainless steel?

SS321 is a type of stainless steel that includes titanium. This addition helps prevent carbide precipitation at high temperatures, making it more resistant to corrosion and cracking in demanding exhaust applications.

What does '1.5D radius' mean for this bend?

The '1.5D' refers to the radius of the bend relative to the diameter of the tubing. A 1.5D radius means the center of the bend is 1.5 times the tube's diameter away from the tube's centerline, resulting in a tighter, more compact bend compared to a larger radius elbow.

What is the advantage of a mandrel bend?

Mandrel bending uses a solid internal mandrel to support the tubing during the bending process. This prevents the tube from collapsing or kinking, ensuring a consistent inner diameter throughout the bend and promoting better exhaust gas flow.

Specifications

Brand: Stainless Bros
Part #: 701-10256-4150
UPC: 701-10256-4150

Stainless Bros 4in SS321 90 Deg Mandrel Bend Elbow - 1.5D Radius 16GA/.065in Wall (Leg)

Name: Stainless Bros 4in SS321 90 Deg Mandrel Bend Elbow - 1.5D Radius 16GA/.065in Wall (Leg)
Brand: Stainless Bros
SKU: stainless-bros-stainless-bros-4in-ss321-90-deg-mandrel-bend-elbow-1-5d-radius-16-t14-548494
Price: 117.75 USD
Availability: BackOrder

$117.75

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Stainless Bros 4in SS321 90 degree mandrel bend elbow. Ideal for custom exhaust fabrication.

Key Features

Fits 4-inch exhaust tubing.
Made from SS321 stainless steel for high-temperature resistance.
Features a 1.5D radius for a tighter 90-degree bend.
16 gauge (.065 inch) wall thickness.
Mandrel bent for consistent inner diameter and smooth flow.

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About this part

Product Details

This is a 4-inch diameter, 90-degree mandrel bend elbow from Stainless Bros. It's made from SS321 stainless steel, which is a popular choice for exhaust systems because it holds up well to high temperatures and resists corrosion. The 1.5D radius means it has a tighter bend than a standard long-radius elbow, making it useful when you need to make a sharp turn in a tight space.

The tubing wall is 16 gauge, or .065 inches thick, which is a solid thickness for exhaust applications. Mandrel bending ensures the inside diameter stays consistent throughout the bend, which helps maintain smooth exhaust flow. This elbow is great for custom exhaust projects, whether you're building a new system from scratch or modifying an existing one.