Restoration Parts

Koch’s Performance is proud to offer these select reproduction parts for Vintage Yamaha Snowmobiles.

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Belly Pan Boots

Belly Pans / Restoration Parts

Belly Pan Boots 1977-80 SRX These boots are an exact copy of OEM. They are made from the same type of rubber material as stock. The cost of original parts when they were available was $85.00 each NOW $125.00 per set...

Piston Ring Sets

Pistons / Restoration Parts

Wiseco Piston Ring Sets High quality Wiseco Rings that fit on your stock Yamaha pistons 1976-77 SRX 440 – $30/ring+shipping 1973 SR 433 w/Chrome Bore – $15/ring+Shipping 1973 GPX 433 GYT (Kit) – $15/ring+Shipping...