BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | OFFROAD ENGINE ENGINE 1296 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 INTAKE SPRING SEATS EXHAUST VALVE LOCKS HONDA CRF450R 02-08 0926-05461 - CRF450X 05-17 0926-05461 - KAWASAKI KX250F 04-15 - 0926-0520 SUZUKI RM-Z250 04-17 - 0926-0520 RM-Z450 05-17 - 0926-0529 1 4-piece. VALVE SPRINGS/RETAINERS/SEATS/LOCKS SPRINGS •Purpose built racing valve spring made from the highest quality Kobe spring wire • Single spring, low drag design increases horsepower •Designed for use with most cam grinds • Sold as pairs, unless noted •Springs can only be used on titanium valves VALVE LOCKS •CNC machined from 8620 steel • Industry first color-coded, purpose-built intake-sized and exhaust-sized design •Design allows keepers to stay locked at higher rpm • Sold as two pair, unless noted 0926-0546 0926-0520 FITS MODEL SINGLE INTAKE VALVE YAMAHA WR250F 01-11 0926-2216 FITS MODEL SINGLE INTAKE VALVE YAMAHA (CONT) YZ250F 02-13 0926-2216 X2 STEEL VALVES BY XCELDYNE •X2 steel valves are a direct descendant of the Xceldyne full-race titanium valves •Increased flow over stock valves •Optimized for weight reduction •Specialized high-performance steel alloys specific to the outer intake and exhaust valve •Designed to work with X2 or Xceldyne premium full-race components •Designed specifically for the offroad enthusiast
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