The wsm top end engine rebuild kit for polaris big boss 250 4x6 1989-1992 standard is part of the latest collection from wsm.Features: top-quality piston kit includes pistons, rings, pins, clips, racing needle bearings, head and base gaskets, intake and exhaust gaskets specifications: bore
Oversize metric: standard bore
Oversize: standard bore size metric: 72.00 Mm bore size: 72.00 Mm engine type: 2-stroke model: platinum series piston material: aluminum product name: rebuild kit research value: finalized riding style: atv skirt coating: moly coated type: top end to fit: polaris big boss 250 1989 american models polaris big boss 250 1990 american models polaris big boss 250 1991 american models polaris big boss 250 1992 american models polaris big boss 250 1993 american models polaris scrambler 250 2x4 1985 american models polaris scrambler 250 2x4 1986 american models polaris startrak 250 1987 all models polaris startrak 250 1988 all models polaris startrak 250 1989 all models polaris startrak 250 1990 all models polaris star 250 1985 all models polaris star 250 1986 all models polaris star 250 1987 all models polaris star 250 1988 all models polaris star 250 1989 all models polaris star 250 1990 all models polaris star lite 250 1991 all models polaris star lite 250 1992 all models polaris star lite 250 1993 all models polaris star lite 250 1994 all models polaris star lite 250 1995 all models polaris trail blazer 250 1990 american models polaris trail blazer 250 1991 ...