BOLD MAGENTA part numbers are new for 2023 PARTS-UNLIMITED.COM 2023 | OFFROAD PISTON & PISTON KITS 1128 FITS MODEL DESCRIPTION PART # SUG. RETAIL KTM SX 65 01-08 Cylinder kit (50mm big bore) 80cc 0931-0245 $683.95 Cast piston kit A (49.95mm piston) 0910-1328 96.95 EXC-F 250 14-16 Repl. forged piston A 0910-3414 266.95 Repl. ring set 0912-0471 52.95 Gasket kit 0934-3157 50.95 EXC-F 250 17-19 Cylinder kit 0931-0865 910.95 Repl. forged piston 0910-3414 266.95 Repl. ring set 0912-0471 52.95 Gasket kit 0934-5491 55.95 SX-F 250 06-10 Repl. ring set 0912-0378 46.95 Gasket kit (80mm) 0934-2553 50.95 SX-F 250 11-12 Repl. ring set 0912-0378 46.95 Gasket kit (80mm) 0934-2898 53.95 SX-F 250 13-15 Repl. forged piston A 0910-3414 266.95 Repl. ring set 0912-0471 52.95 Gasket kit (82mm) 0934-3157 50.95 SX-F 250 16-22 Repl. forged piston 0910-3414 266.95 Repl. ring set 0912-0471 52.95 Gasket kit (82mm) 0934-5491 55.95 XC-F 250 07-12/ XC-F W 250 07-13 Repl. ring set 0912-0378 46.95 Gasket kit (80mm) 0934-2898 53.95 XC-F 250 16-22 Repl. forged piston 0910-3414 266.95 Repl. ring set 0912-0471 52.95 Gasket kit (82mm) 0934-5491 55.95 SX-F 350 11-15 Repl. forged piston 0910-2764 262.95 Repl. ring set 0912-0429 51.95 XC-F 350 11-13 Repl. forged piston 0910-2764 262.95 Repl. ring set 0912-0429 51.95 EXC-F 350 12-16 Repl. forged piston 0910-2764 262.95 Repl. ring set 0912-0429 51.95 XCF-W 350 12-16 Repl. forged piston 0910-2764 262.95 Repl. ring set 0912-0429 51.95 SUZUKI RM-Z250 04-06 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 RM-Z250 07-09 Forged piston kit A (For 83mm big bore kit) (82.95mm) 0910-0883 229.95 Forged piston kit B (For 83mm big bore kit) (82.96mm) 0910-0884 229.95 Repl. ring set 0912-0159 31.95 RM-Z250 10-18 Forged piston kit A (82.95mm) 0910-0883 229.95 Forged piston kit B (82.96mm) 0910-0884 229.95 Repl. ring set 0912-0159 31.95 Gasket kit 0934-4758 52.95 RM-Z250 19-21 Forged piston kit A (82.95mm) 0910-0883 229.95 Repl. ring set 0912-0159 31.95 DR-Z400 00-16 (std. bore) Cylinder kit 0931-0015 604.95 DR-Z400 00-16 (94mm big bore) Cylinder kit (94mm) 435cc 0931-00161 875.95 Gasket kit 0934-0194 103.95 RM-Z450 05-06 Cylinder kit (100mm) 490cc 0931-0114 905.95 Gasket kit 0934-1538 81.95 RM-Z450 08-12 Cylinder kit (100mm kit big bore) 490cc 0931-0251 938.95 Repl. ring set 0912-0374 54.95 RM-Z450 13-17 Cylinder kit (96mm stock bore) 0931-0678 604.95 Cylinder kit (100mm big bore) 490cc 0931-0679 901.95 Repl. ring set 0912-0374 54.95 YAMAHA YZ85 02-18 Cylinder kit (53mm big bore) 105cc 0931-0473 765.95 Forged piston kit A (52.95mm piston) 0910-2780 218.95 Repl. ring set 0912-0434 29.95 Gasket kit 0934-2912 33.95 FITS MODEL DESCRIPTION PART # SUG. RETAIL YAMAHA (CONT) YZ85 02-18 Cylinder kit (53mm big bore w/ long stroke crank) 112cc 0931-0474 $999.95 Forged piston kit A (52.95mm piston) 0910-2780 218.95 Repl. ring set 0912-0434 29.95 Gasket kit 0934-2912 33.95 YZ85 19-21 Cylinder kit (47.5mm stock bore) 0931-0975 799.95 Forged piston kit (47.45mm piston) 0931-0976 96.95 YZ125 97-04 Cylinder kit (54mm stock bore) 125cc 4004851000032 870.95 Repl. cast piston kit 0910-0669 177.95 Repl. ring set 0912-0160 14.95 Gasket kit 400485160003 43.95 Cylinder kit (58mm big bore) 144cc 0931-02584 957.95 Repl. cast piston kit 0910-0648 232.95 Repl. ring set 0912-0104 14.95 Gasket kit 0934-3117 62.95 YZ125 Race 01-04 Race cylinder kit (54mm stock bore) 125cc 4004851000083 760.95 Gasket kit 400485160003 43.95 YZ125 05-21 Cylinder kit (54mm stock bore; high compression) 0931-0095 870.95 Repl. cast piston kit 0910-0669 177.95 Repl. ring set 0912-0160 14.95 Gasket kit (54mm) 0934-1055 44.95 Cylinder kit (58mm big bore) 144cc 0931-01464 957.95 Repl. cast piston kit 0910-0648 232.95 Repl. ring set 0912-0104 14.95 Gasket kit (58mm) 0934-1578 62.95 WR250R/X 08-13 Cylinder kit (83mm big bore) 290cc 0931-0252 1,059.95 Forged piston kit A (82.95mm) 0910-1338 250.95 Repl. ring set 0912-0159 31.95 Gasket kit 0934-1846 76.95 WR250F 15-17 Cylinder kit (81mm big bore) 276cc 0931-0664 832.95 Forged piston kit A (80.95mm) 0910-4193 281.95 Forged piston kit B (80.96mm) 0910-4194 281.95 YZ250 03-21 Cylinder kit (72mm big bore) 293cc 0931-0440 1,399.95 Forged piston kit A (71.95mm) 0910-2666 249.95 Forged piston kit B (71.96mm) 0910-2667 219.95 Repl. ring set 0912-0428 53.95 Gasket kit 0934-2584 24.95 YZ250F 01-07/ WR250F 01-12 Cylinder kit (83mm) 290cc 0931-0024 895.95 Forged Rev dome piston kit B (82.96mm) 0910-0727 219.95 Repl. ring set 0912-0159 31.95 Gasket kit (83mm) 0934-0357 71.95 YZ250F 08-13 Repl. ring set 0912-0159 31.95 Gasket kit 0934-0357 71.95 YZ250F 14-18 Cylinder kit (81mm big bore) 276cc 0931-0664 832.95 Forged piston kit A (80.95mm) 0910-4193 281.95 Forged piston kit B (80.96mm) 0910-4194 281.95 YZ450F 03-05/ WR450F 03-06 Repl. ring set 0912-0105 39.95 Gasket kit (98mm) 0934-0355 94.95 WR450F 07-15 Gasket kit 0934-1057 94.95 YZ450F 06-09 Repl. ring set 0912-0105 39.95 Gasket kit 0934-1057 94.95 YZ450F 10-13 Repl. forged piston (for 102mm big bore kit) 0910-2539 273.95 Repl. ring set 0912-0379 44.95 Gasket kit (102mm) 0934-2555 75.95 YZ450F 14-17 Cylinder kit (standard bore) 0931-0958 604.95 Repl. forged piston 0910-2539 273.95 Repl. ring set 0912-0379 44.95 Gasket kit (102mm) 0934-2555 75.95 YZ450F 18-19 Cylinder kit (standard bore) 0931-0959 604.95 Cylinder kit (102mm big bore) 496cc 0931-0960 969.95 CYLINDER KITS (CONT) 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. 2 YZ125 97-98 models require the use of a 99 or newer exhaust pipe and silencer. 3 Cylinder head not included.To use this kit on 97-98 models you must use a 99 exhaust and an 01 cylinder head; for 99-00 models you must use an 01 cylinder head. 4 May require case boring.
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