BOLD MAGENTA part numbers are new for 2025 PARTS-UNLIMITED.COM 2025 | ATV/UTV ENGINE & COOLING ENGINE & COOLING 1122 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 TYPE OD X ID X HEIGHT PART # HONDA TRX400EX 96-14 Exhaust 1.299” x 0.984” x 0.375” 0926-1634 TRX450ER/R 04-14 Intake 1.535” x 1.181” x 0.434” 0926-1638 Exhaust 1.339” x 1.024” x 0.375” 0926-1635 KAWASAKI KFX450 08-14 Intake 1.535” x 1.024” x 0.434” 0926-1638 Brute Force 650 05-13, Brute Force 650i 06-12, Prairie 650 05-06, KFX700 05-09, Teryx 750 08-12 (except Teryx4) Intake 1.260” x 0.945” x 0.374” 0926-1633 Exhaust 1.102” x 0.787” x 0.374” 0926-1630 FITS MODEL TYPE OD X ID X HEIGHT PART # POLARIS RZR 800 08-14 Exhaust 1.220”x 0.906”x 0.375” 0926-1632 SUZUKI LT-Z400 00-15 Intake 1.496” x 1.142” x 0.434” 0926-1637 Exhaust 1.260” x 0.945” x 0.374” 0926-1633 LT-R450 06-09 Intake 1.496” x 1.142” x 0.434” 0926-1637 Exhaust 1.299” x 0.984” x 0.375” 0926-1634 YAMAHA YFZ450R (all) 09-18 Intake 1.142” x 0.827” x 0.375” 0926-1631 Exhaust 1.220” x 0.906” x 0.375” 0926-1632 YFM660 01-08 (5 valve) Intake 1.299” x 0.984” x 0.375” 0926-1634 IRON ALLOY VALVE SEATS FOR STEEL VALVES •Premium valve seats for applications using steel valves •A specific combination of alloys allowed a creation of a high density, iron-based valve seat with uniform hardness, exceptional thermal qualities and high resistance to wear and recession caused by microwelding •Only by using the latest developments in powdered metal technology were we able to blend these alloys to give a seat material with the qualities required for today’s engines VALVE SEAL SIZING PART # STEM DIAMETER GUIDE DIAMETER OVERALL LENGTH SEAL OD 0926-0386 5.5 mm 0.285” 0.325” 0.425” 0926-0387 6.5 mm 0.475” 0.385” 0.560” 0926-0388 7.0 mm 0.475” 0.430” 0.565” PART # STEM DIAMETER GUIDE DIAMETER OVERALL LENGTH SEAL OD 0926-2383 6.0 mm 0.385” 0.360” 0.475” 0926-3369 4.5 mm/5.0 mm 0.321” 0.331” 0.370” FITS MODEL INTAKE VALVE SEAL EXHAUST VALVE SEAL HONDA ATC185 81-87 0926-0386 0926-0386 ATC200 86-87 0926-0386 0926-0386 ATC250 85-87 0926-0386 0926-0386 ATC350 85-86 0926-0386 0926-0386 TRX200 86-96 0926-0386 0926-0386 TRX250 87-08 0926-0386 0926-0386 TRX250X/300EX 93-09 0926-0386 0926-0386 TRX350EX 86-06 0926-0386 0926-0386 TRX400EX 99-14 0926-0386 0926-0386 FITS MODEL INTAKE VALVE SEAL EXHAUST VALVE SEAL HONDA (CONT) TRX450R 04-05 0926-0386 0926-0386 TRX450R 06-14 0926-0386 - TRX500 01-05 0926-0386 0926-0386 TRX650 03-05 0926-0386 0926-0386 TRX680 06 0926-0386 0926-0386 TRX700XX 08-09 0926-0387 0926-0387 KAWASAKI KFX450R 08-14 0926-0386 0926-0386 FITS MODEL INTAKE VALVE SEAL EXHAUST VALVE SEAL POLARIS Predator 500/ Outlaw 500 03-07 0926-2383 0926-2383 SUZUKI LT-R450/Z 06-09 0926-0386 0926-0386 YAMAHA YFM350 Big Bear 87-13 0926-0387 0926-0387 YFZ450R (all) 04-20 0926-3369 0926-3369 YFM600 98-01 0926-0388 0926-0388 VALVE SEALS • All valve seals are made of 100% solid Viton® for long life •Meet or exceed OEM specifications • When using Kibblewhite spring kits, Kibblewhite valve seals must be used because of spring clearances • If specific application is not listed, use size chart to determine correct valve seal PART # •Made in the U.S.A. FITS MODEL PART # HONDA TRX450R 06-15 0926-0654 FITS MODEL PART # YAMAHA YFZ450 04-19 (all) 0926-0661 VALVE SEAL KITS • Made from premium Viton® material and offers superior oil control •Exhibits the least amount of parasitic drag and wear on the valve, providing better power and greater life to the valve •Fits OEM valve and valve guide dimensions for many applications •These seats have been tested on the track and street in high-rpm applications with leaded, unleaded, and oxygenated fuel, as well as methanol, ethanol, nitrous, and forced induction applications •Sold each •Made in the U.S.A. NOTE: All applications listed use two intake and two exhaust seats unless otherwise noted. NOTE: Verify size before ordering. 0926-0654 0926-0386
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