Seller notes

This is a new L.A. Sleeve Forged piston kit for the original Honda and PRO-X ATC-250R 85-86, TRX-250R 87-89 BIG BORE to 310cc, 2-Stroke. The kit is supplied with the big bore 73.50mm size piston, rings, wrist pin, clips. This would be the +.060" oversize from the original standard bore. The standard bore size for the ATC-295R to TRX-310R is 72.00mm. This piston kit is the 6TH oversize, +.060" big bore size to fit a 73.50mm bore. CHECK YOUR BORE SIZE BEFORE ORDERING!! Your Honda cylinder must alr...

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