BOLD MAGENTA part numbers are new for 2025 PISTON & PISTON KITS PARTS-UNLIMITED.COM ATV/UTV | 2025 PISTON & PISTON KITS 1091 FITS MODEL SIZE PART # HONDA (CONT) TRX450ES 98-04 Std. 0903-1346 0.25 mm over 0903-1347 0.5 mm over 0903-1348 0.75 mm over 0903-1349 1 mm over 0903-1350 TRX500 Foreman FE/FM 05-11 Std. 0903-1326 0.25 mm over 0903-1327 0.5 mm over 0903-1328 1 mm over 0903-1330 KAWASAKI KLF220 Bayou 98-02 Std. 0903-1371 0.25 mm over 0903-1372 0.5 mm over 0903-1373 0.75 mm over 0903-1374 1 mm over 0903-1375 KLF250 Bayou 03-11 Std. 0903-1376 0.25 mm over 0903-1377 0.5 mm over 0903-1378 0.75 mm over 0903-1379 1 mm over 0903-1380 KSF250 Mojave 87-04 Std. 0903-1391 0.25 mm over 0903-1392 0.5 mm over 0903-1393 1 mm over 0903-1395 KLF300 Bayou 88-04/KEF300 Lakota 95-03 Std. over 0903-1381 0.25 mm over 0903-1382 0.5 mm over 0903-1383 0.75 mm over 0903-1384 1 mm over 0903-1385 KVF300 Prairie 99-02 Std. 0903-1386 0.5 mm over 0903-1388 KFX400 03-05 Std. 0903-1466 0.25 mm over 0903-1467 KVF650 Brute Force 05-13/Prairie 4x4 650 02-03 Std. 0903-1401 0.25 mm over 0903-1402 0.5 mm over 0903-1403 0.75 mm over 0903-1404 1 mm over 0903-1405 KVF750 Brute Force 05-11 Std. 0903-1396 0.25 mm over 0903-1397 0.5 mm over 0903-1398 1 mm over 0903-1400 POLARIS Models with 250 engines 85-06 (all) Std. 54-300-10 0.5 mm over 54-300-12 1 mm over 54-300-14 300 Trail Boss/Explorer 96-99 Std. 0903-1027 0.25 mm over 0903-1028 0.5 mm over 0903-1029 0.75 mm over 0903-1030 1 mm over 0903-1031 400 94-96 (all with oval piston port) Std. 54-305-10 0.5 mm over 54-305-12 1 mm over 54-305-14 400 2-Stroke 97-03 Std. 0903-0756 0.5 mm over 0903-0757 1 mm over 0903-0758 Magnum 500 4x4 03 Std. 0903-1406 0.25 mm over 0903-1407 0.5 mm over 0903-1408 0.75 mm over 0903-1409 1 mm over 0903-1410 Scrambler 500 2x4 07-09 Std. 0903-1406 0.25 mm over 0903-1407 0.5 mm over 0903-1408 0.75 mm over 0903-1409 1 mm over 0903-1410 Scrambler 500 4x4 03-12 Std. 0903-1406 0.25 mm over 0903-1407 0.5 mm over 0903-1408 0.75 mm over 0903-1409 1 mm over 0903-1410 FITS MODEL SIZE PART # POLARIS (CONT) Sportsman 500 04-14 Std. 0903-1406 0.25 mm over 0903-1407 0.5 mm over 0903-1408 0.75 mm over 0903-1409 1 mm over 0903-1410 RZR 800 02-10 Std. 0903-1484 Ranger 900/1000 14-17 Std. 0903-1485 SUZUKI LT-Z400 03-10 Std. 0903-1466 0.25 mm over 0903-1467 YAMAHA Grizzly 80 05-08 Std. 0903-1411 0.25 mm over 0903-1412 0.5 mm over 0903-1413 0.75 mm over 0903-1414 1 mm over 0903-1415 Raptor 80 02-08 Std. 0903-1411 0.25 mm over 0903-1412 0.5 mm over 0903-1413 0.75 mm over 0903-1414 1 mm over 0903-1415 YFM80 86-01 Std. 0903-1411 0.25 mm over 0903-1412 0.5 mm over 0903-1413 0.75 mm over 0903-1414 1 mm over 0903-1415 YFS200 Blaster 88-06 Std. 54-530-10 0.5 mm over 54-530-12 1 mm over 54-530-14 YFZ350 Banshee 87-06 Std. 54-520-10 0.5 mm over 54-520-12 1 mm over 54-520-14 Big Bear 350 97-99 Std. 0903-1416 0.25 mm over 0903-1417 0.5 mm over 0903-1418 0.75 mm over 0903-1419 1 mm over 0903-1420 Bruin 350 05-06 Std. 0903-1416 0.25 mm over 0903-1417 0.5 mm over 0903-1418 0.75 mm over 0903-1419 1 mm over 0903-1420 Grizzly 350 07-14 Std. 0903-1416 0.25 mm over 0903-1417 0.5 mm over 0903-1418 0.75 mm over 0903-1419 1 mm over 0903-1420 Raptor 350 04-13 Std. 0903-1416 0.25 mm over 0903-1417 0.5 mm over 0903-1418 0.75 mm over 0903-1419 1 mm over 0903-1420 Warrior 350 87-04 Std. 0903-1416 0.25 mm over 0903-1417 0.5 mm over 0903-1418 0.75 mm over 0903-1419 1 mm over 0903-1420 Grizzly 660 02-06 Std. 0903-1421 0.5 mm over 0903-1423 1 mm over 0903-1425 Raptor 660 01-05 Std. 0903-1421 0.5 mm over 0903-1423 1 mm over 0903-1425 Rhino 660 04-07 Std. 0903-1421 0.5 mm over 0903-1423 1 mm over 0903-1425 Grizzly 700 01-05 Std. 0903-1426 0.75 mm over 0903-1429 Raptor 700 01-05 Std. 0903-1431 0.25 mm over 0903-1432 Rhino 700 08-13 Std. 0903-1426 0.75 mm over 0903-1429 TOP-END REBUILD KITS (CONT)
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