BOLD MAGENTA part numbers are new for 2024 PARTS-UNLIMITED.COM 2024 | OFFROAD PISTON & PISTON KITS 1316 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. FITS MODEL PART # SUG. RETAIL HONDA CRF250R 04-07 0930-0129 $417.95 CRF250R 08 0930-0128 438.95 CRF250R 09 0930-0127 438.95 CRF250X 04-06 0930-0129 417.95 KAWASAKI KX250F 04-05 0931-1019 560.95 FITS MODEL PART # SUG. RETAIL KAWASAKI (CONT) KX250F 06-08 0931-1018 $560.95 SUZUKI RMZ250 04-06 0931-1019 560.95 YAMAHA YZ125 05-21 0930-0205 120.95 YZ250 99-24 0930-0130 219.95 CYLINDERS AND CYLINDER KITS (CONT) FITS MODEL DESCRIPTION COMPRESSION RATIO BORE (MM) PART # SUG. RETAIL YAMAHA (CONT) YZ250 99-23 Standard Bore kit 66.4 0931-0587 $704.95 WR250F 01-04 Standard Bore cylinder (only) - 77 0931-0131 331.95 Standard Bore kit 12.7:1 77 0931-0278 626.95 Standard Bore high-compression kit 13.5:1 77 0931-0296 626.95 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 699.95 Big Bore gasket kit - - 0934-1523 77.95 WR250F 05-13 Standard Bore cylinder (only) - 77 0931-0131 331.95 Standard Bore kit 12.5:1 77 0931-0279 604.95 Standard Bore high-compression kit 13.5:1 77 0931-0296 626.95 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 699.95 Big Bore gasket kit - - 0934-1523 77.95 WR250F 15-17 Standard Bore cylinder (only) - - 0931-0579 362.95 Standard Bore kit 13.5:1 77 0931-0588 626.95 +3mm Big Bore, 269cc kit 13.5:1 77 0931-0591 696.95 Big Bore gasket kit - - 0934-4052 92.95 WR250F 18-19 Standard Bore cylinder (only) - - 0931-0579 362.95 Standard Bore kit 13.5:1 77 0931-0676 626.95 Standard Bore high-compression kit 14.2:1 77 0931-0709 626.95 +3mm Big Bore, 269cc kit 13.5:1 77 0931-0591 696.95 Big Bore gasket kit - - 0934-4052 92.95 WR250F 20-23 Standard Bore cylinder kit 13.8:1 77 0931-1118 549.95 Big Bore gasket kit - 80 0934-7521 101.95 Standard Bore cylinder (only) - 77 0931-1117 329.95 +3mm Big Bore, 270cc kit 13.8:1 80 0931-1021 684.95 YZ250 99-23 Standard Bore kit - 0931-1078 539.95 Big Bore gasket kit - - 0934-4757 105.95 YZ250F 01-04 Standard Bore cylinder (only) - 77 0931-0131 331.95 Standard Bore kit 12.7:1 77 0931-0278 626.95 Standard Bore high-compression kit 13.5:1 77 0931-0296 626.95 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 699.95 Big Bore gasket kit - - 0934-1523 77.95 YZ250F 05-07 Standard Bore cylinder (only) - 77 0931-0131 331.95 Standard Bore kit - 0931-0279 604.95 Standard Bore high-compression kit 13.5:1 77 0931-0296 626.95 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 699.95 Big Bore gasket kit - - 0934-1523 77.95 YZ250F 08-13 Standard Bore cylinder (only) - - 0931-0131 331.95 Standard Bore cylinder kit 13.5:1 77 0931-0281 626.95 +3mm Big Bore, 269cc kit - - 0931-0121 699.95 Big Bore gasket kit - - 0934-1523 77.95 FITS MODEL DESCRIPTION COMPRESSION RATIO BORE (MM) PART # SUG. RETAIL YAMAHA (CONT) YZ250F 14-18, YZ250FX 15-19 Standard Bore cylinder (only) 13.5:1 77 0931-0579 $362.95 Standard Bore cylinder kit 13.5:1 77 0931-0588 626.95 Big Bore cylinder kit 13.5:1 80 0931-0591 696.95 Big Bore gasket kit - - 0934-4052 92.95 YZ250F 19-23, YZ250FX 20-23 Standard Bore cylinder kit 13.8:1 77 0931-1118 549.95 Big Bore gasket kit 80 0934-7521 101.95 Standard Bore cylinder (only) 77 0931-1117 329.95 +3mm Big Bore, 270cc kit 13.8:1 80 0931-1021 684.95 WR450F 03-06 +3mm Big Bore, 478cc (uses Vertex #23404) kit - - 0931-0426 730.95 478cc Top-End gasket kit - - 0934-2387 93.95 YZ450F 03-05 Standard Bore cylinder (only) - 95 0931-0132 342.95 Standard Bore kit 12.5:1 95 0931-0280 626.95 +3mm Big Bore, 478cc (uses Vertex #23404) kit - - 0931-0426 730.95 478cc Top End gasket kit - - 0934-2387 93.95 YZ450F 06-09, WR450F 07-15 Standard Bore kit 12.5:1 95 0931-0282 626.95 Standard Bore high-compression kit 13.5:1 95 0931-0299 659.95 +3mm Big Bore, 478cc kit 12.5:1 98 0931-0174 730.95 +3mm Big bore gasket kit - - 0934-1699 93.95 YZ450F 10-13 Standard Bore cylinder (only) - 97 0931-0396 394.95 Standard Bore kit 13.5:1 97 0931-0345 626.95 +2mm Big Bore, 468cc kit 12.5:1 - 0931-0354 753.95 YZ450F 14-17, YZ450FX 16-18 Standard Bore cylinder (only) - 97 0931-0396 394.95 Standard Bore kit 12.5:1 97 0931-0585 659.95 Big Bore cylinder kit 12.5:1 99 0931-0590 753.95 YZ450F 18-19, WR450F 19-20 Standard Bore cylinder (only) - 97 0931-0848 385.95 Standard Bore kit 12.8:1 97 0931-0849 659.95 Standard Bore high-compression kit 13.8:1 97 0931-0850 670.95 +2mm Big Bore, 468cc kit 12.7:1 99 0931-0851 753.95 YZ450F 20-22, WR450F 21-23 Standard Bore cylinder (only) - 97 0931-1020 351.95 YZ450FX 19-20 Standard Bore cylinder (only) - 97 0931-0848 385.95 Standard Bore kit 12.8:1 97 0931-0849 659.95 +2mm Big Bore, 468cc kit 12.7:1 99 0931-0851 753.95 YZ450FX 21-22 Standard Bore cylinder (only) - 97 0931-1020 351.95 1 Requires case machining; instructions included. 0930-0130 0930-0127
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