BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | OFFROAD ENGINE ENGINE 1272 DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 4-6 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. FITS MODEL BORE SIZE (MM) COMPRESSION RATIO ADDITIONAL INFO PART # HONDA CR80R 92-02 47 - Pro-Lite piston 0903-1598 CR85R 03-04 47.5 - Pro-Lite piston 0903-1495 CR125R 92-97 54.0 - Pro-Lite piston 0903-1600 CR125R 98-99 54.0 - Pro-Lite piston 0903-1601 CR125R 01-02 54.0 - Pro-Lite piston 0903-1496 CR125R 05-07 54.0 - Pro-Lite piston 0903-1623 CR250R 92-96 66.4 - Pro-Lite piston 0903-1596 CR250R 97-01 66.4 - Pro-Lite piston 0903-1491 CR250R 02-04 66.4 - Pro-Lite piston 0903-1517 CR250R 05-07 66.4 - GP Series piston 0903-1548 CRF250R 04-07 78.0 12.9:1 Cam chain included 0903-1531 CRF250R 08-09 78.0 13.1:1 Cam chain included 0903-1537 CRF250R 10-13 76.8 13.2:1 Cam chain included 0903-1546 CRF450R 02-06 96.0 12:1 Cam chain included 0903-1524 CRF450R 07 96.0 12:1 Cam chain included 0903-1525 GARAGE BUDDY COMPLETE ENGINE REBUILD KITS •Includes all top- and bottom-end components for a complete engine rebuild •4-stroke kits include a premium forged piston kit with stock compression ratio and a high-quality cam chain •2-stroke kits include a Pro-Lite® piston •Crankshaft and rod assembly designed and inspected to assure durability • Kit includes main bearings, seals, gaskets, a Wiseco hour meter and bracket
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