BOLD MAGENTA part numbers are new for 2023 ENGINE PARTSCANADA .COM OFFROAD | 2023 595 DISCLAIMER: SEE PAGE 6 FOR IMPORTANT INFORMATION REGARDING CERTAIN WARRANTY AND EMISSION CONTROL REGULATION COMPLIANCE AND NOISE REGULATION INFORMATION. FITS MODEL DESCRIPTION COMPRESSION RATIO BORE (MM) PART # YAMAHA YZ250 99-22 Standard Bore cylinder (only) - 66.4 0931-1078 WR250F 01-04 Standard Bore cylinder (only) - 77 0931-0131 Standard Bore high-compression kit 13.5:1 77 0931-0296 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 Big Bore gasket kit - - 0934-1523 WR250F 05-13 Standard Bore cylinder (only) - 77 0931-0131 Standard Bore high-compression kit 13.5:1 77 0931-0296 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 Big Bore gasket kit - - 0934-1523 WR250F 15-17 Standard Bore kit 13.5:1 77 0931-0588 WR250F 18-19 Standard Bore kit 13.5:1 77 0931-0676 Standard Bore high-compression kit 14.2:1 77 0931-0709 WR250F 20-21 +3mm Big Bore, 270cc kit 13.8:1 80 0931-1021 YZ250F 01-04 Standard Bore cylinder (only) - 77 0931-0131 Standard Bore high-compression kit 13.5:1 77 0931-0296 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 Big Bore gasket kit - - 0934-1523 YZ250F 05-07 Standard Bore cylinder (only) - 77 0931-0131 Standard Bore high-compression kit 13.5:1 77 0931-0296 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 Big Bore gasket kit - - 0934-1523 YZ250F 08-13 Standard Bore cylinder (only) - - 0931-0131 Standard Bore cylinder kit 13.5:1 77 0931-0281 +3mm Big Bore, 269cc kit - - 0931-0121 Big Bore gasket kit - - 0934-1523 YZ250F 14-18,YZ250FX 15-19 Standard Bore cylinder kit 13.5:1 77 0931-0588 YZ250F 19-22,YZ250FX 20-21 +3mm Big Bore, 270cc kit 13.8:1 80 0931-1021 YZ450F 03-05 Standard Bore cylinder (only) - 95 0931-0132 YZ450F 06-09,WR450F 07-15 Standard Bore cylinder (only) - 95 0931-0164 Standard Bore kit 12.5:1 95 0931-0282 Standard Bore high-compression kit 13.5:1 95 0931-0299 +3mm Big Bore, 478cc kit 12.5:1 98 0931-0174 YZ450F 10-13 Standard Bore cylinder (only) - 97 0931-0396 Standard Bore kit 13.5:1 97 0931-0345 YZ450F 14-17,YZ450FX 16-18 Standard Bore cylinder (only) - 97 0931-0396 Standard Bore kit 12.5:1 97 0931-0585 YZ450F 20-22,WR450F 21 Standard Bore cylinder (only) - 97 0931-1020 YZ450FX 21-22 Standard Bore cylinder (only) 97 0931-1020 FITS MODEL PART # HONDA CRF250R 04-07 0930-0129 CRF250X 04-06 0930-0129 FITS MODEL PART # KAWASAKI KX250F 04-05 0930-0132 SUZUKI RM-Z250 04-06 0930-0132 FITS MODEL PART # YAMAHA YZ250 99-23 0930-0130 CYLINDER HEAD KITS • New replacement cylinder head • Includes cam caps and cam cap bolts • Includes C630 (nickel/aluminum/bronze) valve seats and guides • Competition valve job • Shortened valve guides to accept higher lift cams • Unshrouded combustion chamber • Blended bowl seat to port • Stock-shaped ports • Does not include valves, springs or lifters • Made in the U.S.A. CYLINDERS AND CYLINDER KITS (CONT) 0930-0129
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