BOLD MAGENTA part numbers are new for 2025 PARTS-UNLIMITED.COM 2025 | OFFROAD ENGINE ENGINE 1250 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 VALVE INTAKE VALVE HEAD DIAMETER EXHAUST VALVE EXHAUST VALVE HEAD DIAMETER INTAKE GUIDE EXHAUST GUIDE HONDA CRF250R/X 04-09 - - - - - 0926-0601 CRF250R 08-09, CRF250X 08-17 - - - - - 0926-06013 CRF250R 10-17 - - - - - 0926-06013 - - - - - 0926-06021 CRF450R 02-08 0926-0469 +1 mm 0926-04915 +1 mm - 0926-06082 - - - - - 0926-06082 - - - - - 0926-06082 CRF450R 07-08 - Std. - Std. - 0926-0604 0926-0469 +1 mm 0926-0491 +1 mm - - - - - - - 0926-06082 CRF450X 05-06 - Std. - Std. - - CRF450X 07-17 - Std. - Std. 0926-0607 0926-0604 0926-0469 +1 mm 0926-0491 +1 mm - - - - - - - 0926-06082 KAWASAKI KX250F 07-15 - - - - 0926-0609 - KLX400/SR 03 - - - - 0926-06133 0926-06133 SUZUKI DR-Z400/S/SM/SL 00-14 - - - - 0926-06133 0926-06133 RM-Z450 05-06 - - - - 0926-06133 0926-06133 YAMAHA WR450F 03-09 0926-0469 +1 mm (outer intake) - - 0926-06174 - YZ450F 04-09 - +1 mm (outer intake) - - 0926-06174 - 1 4.5 mm. 2 5.5 mm. 3 5 mm. 4 3-piece. 5 For CRF450 02-06. XCELDYNE BY CV4 VALVES •Titanium valves • Features an advanced “high-flow” design to increase flow by more than 15% over stock valves •Lightweight design increases rpm and horsepower • PVD-coated for outstanding wear-resistance in seat, tip and guide area •Sold each GUIDES •Built from Xceldyne’s specified blend of Manganese-bronze •Heat dissipation (thermal conductivity) and valve stem lubrication are substantially increased, which leads to extended valve stem life •Highest tolerances for correct valve stem support and fitment in cylinder head • Some models available with positive-stop “step” built in for easy installation and more importantly, the correct height • 2 piece, unless noted NOTE: Honda CRF450R 02-08 models without intake valves must use 5.5 mm valve guide PART #0926-0608. 0926-0607
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