OFTRacing Copper Exhaust Donuts

Where’s the best place to enjoy an open fire?


How about right under your fuel tank? We don’t think so either.


OFT Racing is proud to announce that we are now manufacturing Copper Exhaust Donuts. These donuts are replacement exhaust header gaskets (donuts) for all 4 stroke Yamaha’s. They are made from an aerospace grade pure copper that was developed to withstand the high temperatures and extreme heat cycles in military and civilian aircraft power plant applications. These gaskets have surpassed strenuous aviation, mil-spec heat cycle requirements as well as real world, big mountain, sled testing on the highest horsepower / highest boost sleds in the world.


These gaskets are designed as a direct replacement for the leak-prone OEM graphite gaskets, and are manufactured in North America by OFT. In addition, they have been tested and proven in performance, workmanship and longevity on sleds for well over a year now. The performance of these gaskets far surpasses that of the OEM and foreign made donuts – even under the heat cycling and strains of high boost.


You can find similar, foreign manufactured gaskets cheaper elsewhere, but let’s be honest, wouldn’t you rather pay a bit more to have your parts manufactured by someone that shares your passion, than get a "smokin’ deal" on parts manufactured in a country that can’t even keep the lead out of your children’s toys? If China can’t get kid’s toys right, do you want Chinese parts on your toys? Let’s keep our aftermarket sled parts North American made! Make sure this doesn’t happen to you… Get a set of OFT Manufactured exhaust donuts today!




Sold in sets:


-3 gaskets for Nytros

-4 gaskets for Apex (not 2011 and newer with EXUP exhaust) and Ventures.

-Although we recommend replacing these gaskets in sets, individual donuts for the above sleds can be purchased.


  • Manufactured by: OFT Racing

Please Choose:

Add to Cart:

Current Reviews: 1