This is a new piston 1st time out of box is for this picture

New old stock genuine Wiseco forged piston kit, part number639M08200, for Polaris Trail Boss350 4x4,

new old stock in original Wiseco packaging.

Includes forged piston, wrist pin,clips, ring set, decals, box.

Bore size 82 millimeter, replaces Wiseco part 639P8, ring set 3228TD, recommended clearance0.0030 inch.

Fits Polaris Trail Boss350 4x4 models, commonly listed for 1989 through 1995.

Please verify your original Wiseco part number before purchase.

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