4.0″ Aluminum Welding Fabrication Donut Tight Bend Radius (Sold as two Halves)

Our aluminum donut is designed for custom fabrication of custom throttle body to intercooler connection, turbo compressor outlet, intercooler inlet and outlet, intercooler pipes, intake manifolds and more where space is extremely limited. These aluminum donuts allow you to fabricate very tight radius bends which are impossible to achieve with a mandrel tube bender.

Reasons to choose aluminum donut for your build:

1. Tight bends achieved
2. Huge time savings vs Pie Cuts
3. Much better flow than Pie Cuts
4. Can be cut at any angle to produce a bend up to 180°
5. Virtually no preparation needed prior to welding

Brand: Straightboost

Material: 6061 Aluminum

Material thickness varies due to the forming process.

Average Material Thickness: 2.0mm

Centerline Radius 0.75D:  3.0″

Sold as TWO Un-Welded half portions to make one complete 360° donut. Check our store for one half and welded versions.

One of these can be cut in half and welded together to produce any degree bend up to 180°.