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Lets you fine-tune shift rate, side load pressure and full shift out poundageDesigned using the highest quality materialsAll EPI springs are manufactured using a 5% tolerance- the lowest in the industryISO 9001-2000 certified

Lets you fine-tune shift rate, side load pressure and full shift out poundageDesigned using the highest quality materialsAll EPI springs are manufactured using a 5% tolerance- the lowest in the industryISO 9001-2000 certified

Kits feature Winderosa qualityContain exhaust valve gaskets, O-rings and seals where required

Kits feature Winderosa qualityContain exhaust valve gaskets, O-rings and seals where required

Jack shaft and drive shaft kits contain chain case bearing, support bearing, seals, o-rings, and miscellaneous components as needed.

Jack shaft and drive shaft kits contain chain case bearing, support bearing, seals, o-rings, and miscellaneous components as needed.

Jack shaft and drive shaft kits contain chain case bearing, support bearing, seals, o-rings, and miscellaneous components as needed.

Includes 1 piston, 1 ring set, 1 wrist pin and 1 circlip setEngineered to provide the best possible path for combustion chamber heat transfer to the cylinder wallsAll pistons, rings, pins and circlips are manufactured to OEM specificationsAll individual...

High-quality, delta-shaped, carbon-fiber replacement reeds with twice the tip area of conventional reedsOrder one set of reeds per reed cage

High-performance gaskets for hardcore racing junkiesGreat for your dirtbike, snowmobile, ATV, PWC, or small engineWill help extend the life of your prized possessionInnovative design, rugged dependability, and superior functionMade from top-notch...

High-performance gaskets for hardcore racing junkiesGreat for your dirtbike, snowmobile, ATV, PWC, or small engineWill help extend the life of your prized possessionInnovative design, rugged dependability, and superior functionMade from top-notch...

High-performance gaskets for hardcore racing junkiesGreat for your dirtbike, snowmobile, ATV, PWC, or small engineWill help extend the life of your prized possessionInnovative design, rugged dependability, and superior functionMade from top-notch...