BOLD MAGENTA part numbers are new for 2024 PARTS-UNLIMITED.COM 2024 | OFFROAD PISTON & PISTON KITS 1314 CYLINDERS AND CYLINDER KITS • Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders •Three kit options to choose from: Standard Bore, Standard Bore high-compression and Big Bore • Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise •Nickel silicon carbide-plated for long life • Kits come complete with gaskets, cylinder, piston, rings, pin and clips •Big bore cylinders do not require machine work (unless noted) • Replacement Vertex piston, rings, clips and pins also available; see pages 1372-1386 •Made in the U.S.A. FITS MODEL DESCRIPTION COMPRESSION RATIO BORE (MM) PART # SUG. RETAIL GASGAS MC50 21-23 Standard Bore cylinder (only) - 39.5 0931-1022 $362.95 MC65 21-23 Standard Bore cylinder (only) - 45 0931-1015 527.95 EX250F, MC250F 21-23 Standard Bore cylinder (only) - - 0931-0716 450.95 Standard Bore kit 14.4:1 78 0931-0717 748.95 Standard Bore high-compression kit 14.7:1 78 0931-0718 769.95 + 3mm Big Bore kit 14.4:1 81 0931-0719 867.95 +3mm Big Bore gasket kit - - 0934-6005 131.95 EX350F 21-22 Standard Bore kit 14.0:1 90 0931-0967 799.95 HONDA CRF150R/ RB 07-09 Standard Bore kit 11.7:1 66 0931-0269 460.95 Standard Bore cylinder (only) - 66 0931-0163 296.95 Standard Bore high-compression kit - 66 0931-0288 483.95 CRF150R/ RB 12-22 Standard Bore kit 11.7:1 66 0931-0486 451.95 Standard Bore cylinder (only) - 66 0931-0163 296.95 +2mm Big Bore, 159cc kit 11.7:1 68 0931-0485 581.95 CRF250R 04-07 Standard Bore cylinder (only) - 78 0931-0128 307.95 Standard Bore kit 12.9:1 78 0931-0270 499.95 Standard Bore high-compression kit 13.4 78 0931-0289 531.95 +3mm Big Bore, 269cc kit 13.0:1 81 0931-01181 628.95 +3mm Big Bore gasket kit - - 0934-1521 58.95 CRF250R 08-09 Standard Bore cylinder (only) - 78 0931-0128 307.95 Standard Bore kit 13.0:1 78 0931-0271 509.95 Standard Bore high-compression kit - - 0931-0290 539.95 +3mm Big Bore, 269cc kit 13.0:1 81 0931-0118 628.95 +3mm Big Bore gasket kit - - 0934-1521 58.95 CRF250R 10-13 Standard Bore cylinder (only) - 76.8 0931-0392 340.95 Standard Bore kit 13.2:1 76.8 0931-0338 499.95 +3.2mm Big Bore, 270cc kit 13.2:1 80 0931-0340 633.95 +3.2mm Big Bore gasket kit - - 0934-2383 68.95 CRF250R 14-15 Standard Bore cylinder (only) - 76.8 0931-0392 340.95 Standard Bore cylinder kit 13.5:1 76.8 0931-0583 509.95 Standard Bore high-compression kit 14.1:1 76.8 0931-0584 532.95 +3.2mm Big Bore, 270cc kit 13.2:1 80 0931-0340 633.95 +3.2mm Big Bore gasket kit - - 0934-2383 68.95 CRF250R 16-17 Standard Bore cylinder (only) - 76.8 0931-0392 340.95 Standard Bore kit 13.5:1 76.8 0931-0674 509.95 +3.2mm Big Bore, 270cc kit 13.2:1 80 0931-0340 633.95 +3.2mm Big Bore gasket kit - - 0934-2383 68.95 CRF250R 18-19 Standard Bore kit 13.9:1 79 0931-0845 520.95 Standard Bore high-compression kit 14.6:1 79 0931-0846 555.95 +3mm Big Bore, 468cc kit 13.9:1 82 0931-0847 658.95 +3mm Big Bore gasket kit - - 0934-6344 61.76 FITS MODEL DESCRIPTION COMPRESSION RATIO BORE (MM) PART # SUG. RETAIL HONDA (CONT) CRF250RX 19-20 Standard Bore kit 13.9:1 79 0931-0845 $520.95 Standard Bore high-compression kit 14.6:1 79 0931-0846 555.95 +3mm Big Bore, 468cc kit 13.9:1 82 0931-0847 658.95 +3mm Big Bore gasket kit - - 0934-6344 61.76 CRF250X 04-17 Standard Bore cylinder (only) - 78 0931-0128 307.95 Standard Bore kit 12.9:1 78 0931-0270 499.95 Standard Bore high-compression kit 13.4 78 0931-0289 531.95 +3mm Big Bore, 269cc kit 13.0:1 81 0931-01181 628.95 +3mm Big Bore gasket kit - - 0934-1521 58.95 CRF450R 02-06 Standard Bore cylinder (only) - 96 0931-0129 336.95 Standard Bore kit 12.1:1 96 0931-0272 544.95 Standard Bore high-compression kit 12.5:1 96 0931-0291 589.95 +4mm Big Bore, 488cc kit 12.1:1 100 0931-0119 664.95 Big Bore gasket kit - - 0934-1522 71.95 CRF450R 07-08 Standard Bore kit 12.1:1 96 0931-0839 544.95 Standard Bore high-compression kit 12.5:1 96 0931-0841 577.95 CRF450R 09-12 Standard Bore kit 12.0:1 96 0931-0273 577.95 Standard Bore cylinder (only) - 96 0931-0391 362.95 Big Bore gasket kit - - 0934-1927 103.95 CRF450R 13-16 Standard Bore kit 12.5:1 96 0931-0489 600.95 Standard Bore cylinder (only) - 96 0931-0391 362.95 + 3mm Big Bore, 478cc kit 12.0:1 99 0931-0488 740.95 Big Bore gasket kit - - 0934-1927 103.95 CRF450R/ RX 17-20 Standard Bore cylinder (only) - 96 0931-0712 351.95 Standard Bore kit 13.5:1 96 0931-0713 589.95 Standard Bore high-compression kit 14.4:1 96 0931-0714 646.95 + 3mm Big Bore kit 13.51 99 0931-0715 740.95 +3mm Big Bore gasket kit - - 0934-6004 70.65 CRF450R/ RWE/RX 19-20 Standard Bore kit 13.5:1 96 0931-0840 611.95 +3mm Top-End gasket kit (not for RWE) - - 0934-6342 40.39 CRF450X 05-17 Standard Bore cylinder (only) - 96 0931-1013 351.95 Standard Bore kit 12.1:1 96 0931-0274 555.95 HUSQVARNA TC 50 17-23 Standard Bore cylinder (only) - 39.5 0931-1022 362.95 TC 50 Mini 18-23 Standard Bore cylinder (only) - 39.5 0931-1022 362.95 TC 65 17-23 Standard Bore cylinder (only) - 45 0931-1015 527.95 FC 250 16-22 Standard Bore cylinder (only) - - 0931-0716 450.95 Standard Bore kit 14.4:1 78 0931-0717 748.95 Standard Bore high-compression kit 14.7:1 78 0931-0718 769.95 + 3mm Big Bore kit 14.4:1 81 0931-0719 867.95 +3mm Big Bore gasket kit - - 0934-6005 131.95 0931-0270
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