BOLD MAGENTA part numbers are new for 2025 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2025 PISTON & PISTON KITS 1403 FORGED PISTON KITS continued on next page. TOP END PISTON KITS (CONT) FITS MODEL BORE SIZE (MM) PART # KTM (CONT) 450 SX-F 20-22 94.95 0903-1756 94.96 0903-1757 SUZUKI RM-Z250 10-18 76.96 0903-1709 RM-Z250 19-23 76.95 0903-1741 76.96 0903-1743 RM-Z450 13-23 95.95 0903-1764 95.96 0903-1765 YAMAHA YZ125 05-21 53.95 0903-1786 53.96 0903-1787 WR250F 08-13 76.96 0903-1706 76.97 0903-1707 WR250F 15 76.96 0903-1710 WR250F 18 76.95 0903-1712 76.96 0903-1713 YZ250 99-23 66.34 0903-17841 66.35 0903-17851 YZ250F 08-13 76.96 0903-1706 76.97 0903-1707 FITS MODEL BORE SIZE (MM) PART # YAMAHA (CONT) YZ250F 14-15 76.96 0903-1710 YZ250F 19-23 76.95 0903-1714 76.96 0903-1715 YZ250FX 15 76.96 0903-1710 WR450F 16-18 96.95 0903-1770 96.96 0903-1771 WR450F 19-20 96.95 0903-1768 96.96 0903-1769 WR450F 21-23 96.95 0903-1766 96.96 0903-1767 YZ450F 14-17 96.95 0903-1770 96.96 0903-1771 YZ450F 18-19 96.95 0903-1768 96.96 0903-1769 YZ450F 20-22 96.95 0903-1766 96.96 0903-1767 YZ450FX 16-18 96.95 0903-1770 96.96 0903-1771 YZ450FX 19-20 96.95 0903-1768 96.96 0903-1769 1 Forged. FITS MODEL BORE SIZE (MM) PART # REPLACEMENT RING PART # GASGAS MC 65 21-22 44.96 0910-2531 - 44.97 0910-2532 - MC 85 21-22 46.96 0910-2533 - EC 125 13-15 53.94 0910-0669 - HONDA CR125R 92-03 53.97 - 0912-0005 CR250R 02-04 66.34 0910-0131 - CFR250R 10-17 (big bore) 81.96 - 0912-0281 81.97 - 0912-0281 CRF450R 02-08 (big bore, Rev dome; 11.6:1 compression) 99.95 - 0912-0101 99.96 - 0912-0101 CRF450R 09-16 (big bore, 12.5:1 std. compression) 99.95 - 0912-0374 HUSQVARNA TC 85 14-22 46.96 0910-2533 - TC 125 14-20 53.95 - 0912-0005 53.96 0910-0067 0912-0005 TX 125 17-18 53.95 - 0912-0005 53.96 0910-0067 0912-0005 TC/TE 250 14-22 66.34 0910-0627 - 66.35 - - 66.36 0910-3894 - TE 300 13-16 71.95 - 0912-0021 71.96 - 0912-0021 FC 350 14-15 (big bore, 13.5:1 std. compression) 89.96 0910-2764 - FORGED PISTON KITS •2-stroke pistons are made from 4032 silicium •4-stroke pistons are made from 2618 silicium – the same material used to produce Formula 1 pistons •Both include 3% copper in materials for better heat resistance •All pistons are forged using a precision heat-treatment process that allows for production tolerances of just 0.01mm • Forged piston kits are available in A, B and C sizing •Forged piston tooling allows for the lightest available product • Kits include anti-wear coated piston, rings, pin and circlips
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