Honda Trx250r 250r To 295 300 310 Big Bore Piston Kit 72.00mm Honda Or Prox Cyl

  

This is a new L. 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 72.00mm size piston (with clearance fit), rings, wrist pin, clips. This would be the the original big bore.

The standard bore size for the ATC-295R to TRX-310R is 72.00mm. CHECK YOUR BORE SIZE BEFORE ORDERING! Your Honda cylinder must already have the big bore kit already installed to use this piston kit. Year model 87-89 uses a. 190 base plate with this piston.

The PRO-X Big Bore also starts at 72mm. A qualified machine shop is required to bore your cylinder to fit the piston. Note: Picture is the exact model, you will receive when ordering the following. 1 each piston kit part# W845PS. Identification reference: This piston is for the PRO-X big bore cylinder or the original Honda cylinder that has already been big bored to the 310.

Some call it the 300 or 295. This piston fits 72.00mm bore.