BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | 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”. BOTTOM END KITS (CONT) 1 Stroker kit; +4 mm 424cc. 2 Stroker kit; +4 mm 460cc, must use Vertex piston PART #0910-2636. 3 Cylinder sleeving required. 4 Stroker kit; +3 mm 471cc. 5 Stroker kit; +4 mm 424cc. 6 Stroker kit; +4 mm/+5 mm rods, must use Vertex long rod pistons. FITS MODEL PART # HONDA (CONT) TRX350FE/TE/FM/TM Rancher 00-06 0921-0493 TRX400EX 99-04 0921-0401 0921-03852, 3 TRX400EX 05-08 0921-0390 TRX400X 09-14 0921-0390 TRX420FM/FPM/TM Rancher 12-13 0921-0591 TRX450R/ER 04-05 0921-0405 0921-04174 TRX450R/ER 06-14 0921-0407 0921-04184 TRX500FE Foreman 05-11 0921-0494 TRX500FE Foreman 12-13 0921-0592 TRX500FM/FPM Foreman 12-13 0921-0593 TRX500FM/TM Foreman 05-11 0921-0495 TRX500FPE Foreman 12 0921-0592 KAWASAKI KFX400 03-06 0921-0404 0921-04245 KFX450R 08-14 0921-0411 KVF700 Prairie 04-06 0921-0488 KFX700 04-09 0921-0488 KRF750 Teryx 08-11 0921-0489 KRF750 Teryx 12 0921-0594 KVF750 Brute Force 05-11 0921-0489 KVF750 Brute Force 4x4i 12-14 0921-0523 KVF750 Brute Force 4x4i 15-20 0921-0596 KVF750 Brute Force 4x4i EPS 12-20 0921-0596 POLARIS Sportsman 450 H.O./MD 2x4 16 0921-0970 ACE 570 15-17 0921-0970 ACE 570 HD 15-16 0921-0970 Ranger 570 14-16 0921-0970 Ranger 570/Crew 4x4 14-17 0921-0970 Ranger 570 Fullsize/C rew 4x4 15-17 0921-0970 Ranger 570-6 Fullsize Crew 16-17 0921-0970 RZR 570 12 0921-0969 RZR 570 13-17 0921-0970 Sportsman 570 14-16 0921-0970 Sportsman 570 6x6 17 0921-0970 Sportsman 570 EPS 14-16 0921-0970 Sportsman 570 EPS UTE/ZUG 16 0921-0970 Sportsman 570 EPS/MD 15 0921-0970 Sportsman 570 Forest 14 0921-0970 Sportsman 570 HD 14-16 0921-0970 Sportsman 570 SP/EPS 15-16 0921-0970 Sportsman 570 Touring 14-15 0921-0970 Sportsman 570 Touring SP/EPS 15-16 0921-0970 Sportsman 570 Touring EPS/MD 16 0921-0970 Sportsman 570 Tractor 16 0921-0970 Sportsman 570 UTE HD 15-16 0921-0970 Sportsman 570 UTE HD EPS 14 0921-0970 Sportsman 570 UTE Tractor 16 0921-0970 Sportsman 570 UTE/MD 16 0921-0970 Sportsman 570 X2 EPS 15-16 0921-0970 Sportsman 700 4x4 06-09 0921-0600 Sportsman 800 EFI 06-10 0921-0426 Ranger 800 4x4 08-10 0921-0426 Ranger 800 EFI 4x4 12-14 0921-0599 Ranger 800 6x6 10 0921-0426 Ranger 800 6x6 12-16 0921-0599 RZR 800 08-10 0921-0426 RZR 800 11-14 0921-0599 Scrambler 850 14-20 0921-0896 Sportsman 850 Forest 15 0921-0896 Sportsman 850 High Lifter 16-20 0921-0896 Sportsman 850 SP 15-20 0921-0896 Sportsman 850 Touring EPS 14 0921-0896 Sportsman 850 Touring SP 15-20 0921-0896 Sportsman XP 850 EPS H.O. 15 0921-0896 FITS MODEL PART # POLARIS (CONT) ACE 900 EPS 16 0921-0898 ACE 900 EPS XC 17 0921-0899 Ranger 900 4x4 Crew 14-15 0921-0897 Ranger 900 4x4 Crew 16 0921-0898 Ranger 900 4x4 Crew 17 0921-0899 Ranger XP 900 13-15 0921-0897 Ranger XP 900 16 0921-0898 Ranger XP 900 17 0921-0899 RZR 900 Trail 50”/XC 55”/Trail S 60” 15 0921-0897 RZR 900 Trail 50”/XC 55”/Trail S 60” 16 0921-0898 RZR 900 Trail 50”/XC 55”/Trail S 60” 17 0921-0899 RZR XP/XP 4 Turbo 16 0921-0971 RZR XP/XP 4 Turbo 17 0921-0972 General 1000 EPS 16-17 0921-0893 General 4 1000/MD 17 0921-0893 General 1000 EPS 18-19 0921-0890 General 1000 EPS Deluxe/Premium 20 0921-0890 Ranger 1000 EPS 18-19 0921-0892 Ranger 1000 EPS HD/MD 19 0921-0892 Ranger 1000 EPS Texas Ed. 20 0921-0892 Ranger XP 1000 Crew/EPS 17 0921-0891 Ranger XP 1000 Crew EPS Texas 20 0921-0892 RZR 1000 Trail S 60” 16-17 0921-0893 RZR 1000 Trail S 60” 18-20 0921-0890 RZR RS1 18-20 0921-0890 RZR S 4 1000 19 0921-0890 RZR XP 1000 18-20 0921-0890 RZR XP 4 1000 18 0921-0892 RZR XP 4 1000 19-20 0921-0890 RZR XP/XP 4 1000 14-15 0921-0894 RZR XP/XP 4 1000 16-17 0921-0893 Scrambler 1000 17 0921-0954 Scrambler 1000 Tractor 16-18 0921-0954 Scrambler 1000 XP H.O. EPS 15 0921-0954 Scrambler 1000/MD 15-16 0921-0954 Scrambler XP 1000 15-20 0921-0954 Sportsman 1000 Forest 15 0921-0954 Sportsman 1000 High Lifter 16-18 0921-0954 Sportsman 1000 Touring 15-19 0921-0954 Sportsman 1000 Touring Tractor 18 0921-0954 Sportsman 1000/MD 15 0921-0954 Sportsman XP 1000 15-20 0921-0954 Sportsman XP 1000 High Lifter 19-20 0921-0954 Sportsman XP 1000 Touring 19-20 0921-0954 Sportsman XP 1000 Tractor 17-18 0921-0954 SUZUKI LT250R 88-92 0921-0313 LT-Z400 03-08 0921-0404 0921-04241 LT-R450 QuadRacer06-08 0921-0408 0921-04204 LT-V700F Twin Peaks 04-05 0921-0488 YAMAHA YFS200 Blaster 88-06 0921-0397 YFM350R Raptor 04-13 0921-0402 YFM350X Warrior 87-04 0921-0402 YFZ350X Banshee 87-06 0921-0396 0921-05796 YFM450 Grizzly 07-14 0921-0522 YFM450 Kodiak 03-06 0921-0522 YFM450 Wolverine 06-10 0921-0522
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