BOLD MAGENTA part numbers are new for 2023 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2023 CYLINDER KITS continued on next page. 1127 FITS MODEL DESCRIPTION PART # SUG. RETAIL HONDA CRF150R 07-10 Cylinder kit (69mm big bore) 163.5cc 0931-0307 $546.95 Repl. ring set 0912-0331 52.95 Gasket kit 0934-1968 49.95 CRF230F 07-15 Cylinder kit (67mm big bore) 233cc 0931-0662 325.95 Repl. cast piston +0.25 0910-4191 89.95 Repl. cast piston +0.50 0910-4192 89.95 Gasket kit 0934-4814 28.95 CRF250R/X 04-09 Forged piston kit A (81.95mm piston) 0910-0646 219.95 Repl. rings 0912-0281 37.95 Gasket kit 0934-1054 80.95 CRF250R 10-17 Gasket kit (82.00mm big bore) 0934-2554 75.95 CRF250R 18-22 Cylinder kit (82.00mm big bore; 13.7:1 compression) 289cc 0931-0956 914.95 CRF250R 18-19 Cylinder kit (standard bore) 0931-0955 604.95 CRF450R 02-08 Forged piston kit A (99.95mm, 11.6:1 compression, for 100mm big bore/490cc) 0910-0255 230.95 CRF450R 09-16 Gasket kit (100mm big bore) 0934-2546 92.95 CRF450R 17-22 Cylinder kit (standard bore) 0931-0957 604.95 HUSQVARNA FC 250 14-15 Repl. forged piston A 0910-3414 266.95 Repl. ring set 0912-0471 52.95 Gasket kit (82mm) 0934-3157 50.95 FC 250 16-22 Repl. forged piston 0910-3414 266.95 Repl. ring set 0912-0471 52.95 Gasket kit (82mm) 0934-5491 55.95 FE 250 17-19 Cylinder kit (82mm big bore) 276cc 0931-0865 910.95 Repl. forged piston 0910-3414 266.95 Repl. ring set 0912-0471 52.95 Gasket kit 0934-5491 55.95 FC350 14-15 Repl. forged piston 0910-2764 262.95 Repl. ring set 0912-0429 51.95 FE350 14-16 Repl. forged piston 0910-2764 262.95 Repl. ring set 0912-0429 51.95 KAWASAKI KX65 02-21 Cylinder kit (50mm big bore) 80cc 0931-0107 729.95 Gasket kit (50mm big bore) 0934-1533 35.95 FITS MODEL DESCRIPTION PART # SUG. RETAIL KAWASAKI (CONT) KX125 03-07 Cylinder kit (54mm) 125cc 0931-0012 $760.95 Cast-lite flat-top piston (53.94mm piston) 0910-0253 115.95 Repl. ring set 0912-0160 14.95 Gasket kit (54mm) 0934-0190 43.95 KX125 03-07 Cylinder kit (58mm big bore) 144cc 0931-0109 941.95 Cast piston kit A (57.935mm) 0910-0877 232.95 Cast piston kit B (57.945mm) 0910-0878 232.95 Repl. ring set 0912-0104 14.95 Gasket kit (58mm) 0934-2135 92.95 KX250F 04-08 Forged Rev dome piston kit A (82.95mm piston) 0910-0310 219.95 Repl. ring set 0912-0159 31.95 Gasket kit (83mm) 0934-0359 80.95 KX250F 09-10 Cylinder kit (83mm big bore) 290cc 0931-0308 865.95 Forged piston kit A 0910-0883 229.95 Forged piston kit B 0910-0884 229.95 Repl. ring set 0912-0159 31.95 Gasket kit (83mm) 0934-2136 51.95 KX250F 11-12 Forged piston kit A 0910-0883 229.95 Forged piston kit B 0910-0884 229.95 Repl. ring set 0912-0159 31.95 Gasket kit (83mm) 0934-2136 51.95 KX250F 13-16 Forged piston kit A 0910-0883 229.95 Forged piston kit B 0910-0884 229.95 Repl. ring set 0912-0159 31.95 Gasket kit (83mm) 0934-2136 51.95 KLX400 03-06 (std. bore) Cylinder kit 0931-0015 604.95 KLX400 03-06 (94mm big bore) Cylinder kit (94mm big bore) 435cc 0931-00161 875.95 Gasket kit 0934-0194 103.95 KX450F 09-15 Cylinder kit (100mm big bore) 490cc 0931-0328 877.95 Repl. forged piston 0910-2535 247.95 Repl. ring set 0912-0374 54.95 Gasket kit (100mm) 0934-2552 75.95 KX450F 16-18 Cylinder kit (standard bore) 0931-0961 604.95 Repl. forged piston 0910-2535 247.95 Repl. ring set 0912-0374 54.95 CYLINDER KITS • Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets • Forged piston black graphite or clear tin coating; includes rings, clips and pin • Athena top-end gasket set includes required seals and hardware • Easy-to-follow step-by-step installation instructions • Most are bolt-on; no machining required except where noted STOCK BORE RACE CYLINDER KITS • Include aluminum cylinder with nickel-carbide coating, ported to Factory Works specs • Two-stroke kits include an aluminum cylinder head with a removable bronze dome allowing for a higher compression ratio and anti-detonation features (except where noted) • Two-stroke kits feature specially designed, high-performance, hard-anodized power valves (cannot use OEM) • Specially designed, high-performance, Cast-Lite flat-top piston kit • Athena top-end gasket set including required seals and hardware • Easy-to-follow, step-by-step installation instructions 4-stroke cylinder kit 1 This Athena cylinder kit assembled with OE CDI and exhaust gets much more torque (Nxm) than OE bike; in order to strongly increase horsepower to the wheel, it is necessary to use, at least, a racing exhaust system. BIG BORE RACE CYLINDER KITS • Include aluminum cylinder with nickel-carbide coating • Specially designed, high-performance, hard-anodized power valves (cannot use OEM) • Specially designed, high-performance, forged OEM-style domed piston kit • Athena top-end gasket set including required seals and hardware • Easy-to-follow, step-by-step installation instructions NOTE: All 4-stroke kits do not include cylinder head. 2-stroke cylinder kit
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