This is a new L.A. Sleeve top end piston kit for the Stock Honda ATC-250R 85-86, TRX-250R 87-89 BIG BORE to 295cc thru 310cc, 2-Stroke. The kit is supplied with big bore 72mm size piston, rings, wrist pin, clips. Also includes is a top end gasket set and new top end bearing
The standard bore size for the ATC-295R to the 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. A qualified mechanic should inspect your cylinder and measure your bore size before you purchase.
Note: Picture is the exact model, you will receive when ordering the following:
1 each piston kit part# W845PS
1 each top end gasket kit part# GS845
******Identification reference: This piston and gasket kit is for the STOCK Honda cylinder that has already been big bored to the 310. Some call it the 300 or 295 . They all start with the same 72mm bore.