• "Polished OD" material has a #7 Polished & Buffed finish on the OD of the item.
Please note that in 95% of applications, the material finishes can be mixed and matched without any problems.
Product Dimension Info
Detailed product dimensions can be found on the main product page. If you need further assistance with product dimensions please email us at your convenience.
The Ace Race Parts line of 6061-T6 Aluminum Tight Radius Donuts offers fabricators of intercooler piping, intakes, and other custom components a high-quality welding experience with virtually no need for surface preparation. These donuts allow for much tighter radius bends than those achievable with traditional mandrel bends. Featuring a CLR multiplier of 0.75D, these donuts enable incredibly tight bends at almost any angle. Manufactured using the latest CNC metal spinning technology, our Donuts maintain consistent dimensions, surface finish, and material composition.
Our Tight Radius Donuts are available in two configurations: 1) Unwelded, sold as a set of two halves, and 2) Welded, fully welded along the outer circumference but unwelded on the inside. This particular Aluminum Donut is offered as a set of two unwelded halves and will require welding on both the inside and outside of the donut.
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Our aluminum donuts are cleaned and highly polished to ensure a clean finish on the surface of the material and are the perfect match for our Aluminum Tube, Aluminum Mandrel Bends, Aluminum Pie Cuts, Aluminum V-Band Clamps and Flanges, 4-Ply Silicone Couplings, and Stainless Steel T-Bolt Clamps.