BOLD MAGENTA part numbers are new for 2023 PARTS-UNLIMITED.COM 2023 | OFFROAD ENGINE 1054 DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES. SEE PAGES 4-5 FOR IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. CYLINDER HEAD SERVICE KITS (CONT) FITS MODEL PART # SUG. RETAIL HONDA CRF250R 04-07/CRF250X 04-15 0926-3289 $550.95 CRF450R 02-08 0903-1584 550.95 CRF450R 07-08 0903-1595 550.95 CRF450X 05-17 0903-1585 550.95 SUZUKI DR-Z400 00-20 0926-3290 550.95 FITS MODEL PART # SUG. RETAIL YAMAHA YZ250F 14-16 0903-1304 $610.95 Repl. rings for PART #0903-1304 0912-0664 27.95 WR450F 03-06 0903-1588 613.95 WR450F 07-15 0903-1589 613.95 YZ450F 03-05 0903-1588 613.95 YZ450F 06-09 0903-1589 613.95 TOP-END SERVICE KITS • These kits give your bike a performance boost • Kits include all necessary parts for a complete top-end service/rebuild: pistons, piston rings, piston pins, gaskets, valves and valve springs • Pistons fully machined from 2618 aluminum alloy with a performance skirt coating • Black Diamond™ or White Diamond™ engine valves (depending on application) • Lightweight racing valve springs kit with titanium valve spring retainers, dual springs and H.T. steel base washers (springs are suitable for use with high-performance cams) • All necessary gaskets, seals and O-rings included • Sold as a complete kit NOTE: The pistons, rings, valve and pin clips in this kit are designed to work together as a system.The are NOT compatible with OEM components and should ONLY be used with components in the kit. 0903-1584 0903-1588 DESCRIPTION SPECIFICATIONS KIT CONTENTS PART # SUG. RETAIL YAMAHA WR250F 01-13, YZ250F 01-13 Max valve lift (intake/exhaust).380”, 1.105” installed height, 39 lb. seat pressure, 86 lb. open pressure, .380”max lift 5 titanium valve spring retainers, 5 CrSi valve springs (3 intake/2 exhaust), 5 H.T. steel base washers, Black Diamond™ valves (3 intake/2 exhaust), C630 valve guides, top-end gasket kit 0926-3233 $556.95 YZ450F 06-09, WR450F 07-15 Max valve lift (intake/exhaust) .380”, installed height 1.105”, seat pressure 39 lb., open pressure 86 lb. 5 titanium retainers, 5 valve springs, 5 steel base washers,White Diamond® valves (3 intake/2 exhaust), 5 C674 valve guides, top-end gasket kit 0926-3131 567.95 YZ450F 14-19, YZ450FX 16-20, WR450F 16-21 Max valve lift (intake/exhaust) .450”, installed height 1.185”, seat pressure 46 lb., open pressure 155 lb. 4 titanium retainers, 4 valve springs, 4 steel base washers,White Diamond® intake/exhaust valves (2 each), 4 C630 valve guides, top-end gasket kit 0926-3132 418.95
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