BOLD MAGENTA part numbers are new for 2026 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2026 PISTON & PISTON KITS 1385 FITS MODEL DESCRIPTION PART # HONDA CRF150R 07-10 Cylinder kit (69 mm big bore) 163.5cc 0931-0307 Gasket kit 0934-1968 Repl. ring set 0912-0331 CRF230F 07-15 Cylinder kit (67 mm big bore) 233cc 0931-0662 Gasket kit 0934-4814 CRF250R/X 04-09 Forged piston kit A (81.95 mm piston) 0910-0646 Gasket kit 0934-1054 CRF250R 18-22 Cylinder kit (standard bore) 0931-0955 Cylinder kit (85 mm big bore; 13.7:1 compression) 289cc 0931-0956 CRF450R 02-08 Forged piston kit A (99.95 mm, 11.6:1 compression, for 100 mm big bore/490cc) 0910-0255 CRF450R 17-22 Cylinder kit (standard bore) 0931-0957 HUSQVARNA FC 250 14-15 Repl. forged piston A 0910-3414 FC 250 16-22 Repl. forged piston 0910-3414 Gasket kit (82 mm) 0934-5491 FITS MODEL DESCRIPTION PART # HUSQVARNA (CONT) FE 250 17-19 Repl. forged piston for cylinder kit (82 mm big bore) 276cc 0910-3414 Gasket kit 0934-5491 FC 350 14-15 Repl. forged piston 0910-2764 FE 350 14-16 Repl. forged piston 0910-2764 KAWASAKI KX65 02-21 Cylinder kit (50 mm big bore) 80cc 0931-0107 Gasket kit (50 mm big bore) 0934-1533 KX125 03-07 Cylinder kit (54 mm) 125cc 0931-0012 Cylinder kit (58 mm big bore) 144cc 0931-0109 Cast piston kit A (57.935 mm) 0910-0877 Cast piston kit B (57.945 mm) 0910-0878 Gasket kit (54 mm) 0934-0190 Gasket kit (58 mm) 0934-2135 Repl. ring set 0912-0160 Repl. ring set 0912-0104 KX250F 04-08 Repl. ring set 0912-0159 Gasket kit (83 mm) 0934-0359 CYLINDER KITS continued on next page. 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 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. 4-stroke cylinder kit 2-stroke cylinder kit
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