BOLD MAGENTA part numbers are new for 2026 ENGINE & COOLING PARTS-UNLIMITED.COM ATV/UTV | 2026 ENGINE & COOLING 1123 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 PART # YAMAHA (CONT) YFZ450 04-05 0921-0406 YFZ450 04-09 0921-03507 YFZ450 04-09/12-13 0921-04198 YFZ450R 09-13,YFZ450X 10-11 0921-0490 YXR450 Rhino 06-09 0921-0522 YFM660F Grizzly 02-08 0921-0410 0921-04229 YFM660R Raptor 01-05 0921-0403 YXR660 Rhino 04-07 0921-0410 0921-04229 YFM700D Grizzly 4x4 14-15 0921-0978 YFM700D Grizzly 4x4 16-17 0921-0979 YFM700DH Grizzly Hunter 4x4 14 0921-0978 YFM700DH Grizzly Hunter 4x4 16-17 0921-0979 YFM700F Grizzly 07-13 0921-0425 0921-042710 YFM700FG Grizzly 4x4 07-13 0921-0425 0921-042710 YFM700FG Grizzly 4x4 14-15 0921-0978 YFM700FG Grizzly 4x4 16-18 0921-0979 YFM700FGH Grizzly Hunter 4x4 09-13 0921-0425 0921-042710 YFM700FGP Grizzly EPS 4x4 08-13 0921-0425 0921-042710 YFM700FGPDU Grizzly Ducks 4x4 07-09 0921-0425 0921-042710 YFM700FGPH Grizzly EPS Hunter 4x4 07-13 0921-0425 0921-042710 YFM700FGPOH Grizzly Outdoorsman Edition 4x4 07 0921-0425 0921-042710 FITS MODEL PART # YAMAHA (CONT) YFM700FGPSE Grizzly EPS SE 4x4 07-13 0921-0425 0921-042710 YFM700GP Grizzly EPS 4x4 16-18 0921-0979 YFM700GPH Grizzly EPS Hunter 4x4 16/18 0921-0979 YFM700GPL Grizzly EPS LE 4x4 16-18 0921-0979 YFM700GPS Grizzly EPS SE 4x4 17-18 0921-0979 YFM700Grizzly EPS Graphite 18 0921-0979 YFM700KD/KDH Kodiak/Hunter 4x4 16-18 0921-0979 YFM700KP/KPH Kodiak EPS/Hunter 4x4 16-18 0921-0979 YFM700KPS Kodiak EPS SE 4x4 16-18 0921-0979 YFM700PE/PH Grizzly EPS/Hunter 4x4 14-15 0921-0978 YFM700PH Grizzly EPS Hunter 4x4 09-12 0921-0425 0921-042710 YFM700PH Grizzly EPS Hunter 4x4 17-18 0921-0979 YFM700PS Grizzly EPS SE 4x4 14-15 0921-0978 YFM700R Raptor 06-14 0921-0409 0921-042110 YXE700D Wolverine R-SPEC 16 0921-0979 YXE700DH Wolverine R-SPEC Hunter 16/18 0921-0979 YXE700P/PH Wolverine R-SPEC EPS/Hunter 16-18 0921-0979 YXE700PS Wolverine R-SPEC EPS SE 16-17 0921-0979 YXE700WDB Wolverine 16-18 0921-0979 YXE700WDBH Wolverine Hunter 16-17 0921-0979 YXE700WPB/WPBH Wolverine EPS/Hunter 17 0921-0979 YXR700F Rhino 08-13 0921-0425 0921-042710 7 04-05 models will be true 450cc when installed. 8 Stroker kit; 04-05 +4.4 mm 470cc, 06-08 +3 mm 471cc. 9 Stroker kit; +4 mm 691cc. 10 Stroker kit; +5 mm 727cc. BOTTOM END KITS (CONT) FITS MODEL PART # POLARIS RZR 800 11-14, Ranger 800 11-14, Ranger 800 6x6 11-16, Sportsman 800 11-14, Sportsman 800 6x6 11-15 0921-0883 YAMAHA YFS200 Blaster 88-06 0921-0113 FITS MODEL PART # YAMAHA (CONT) YFZ350 Banshee 87-06 0921-0114 YFM660F Grizzly 02-08 0921-0147 YFM660R Raptor 01-05 0921-0144 YXR660 Rhino 05-07 0921-0147 CRANKSHAFT KITS • Include crankshaft, top end bearing, premium main bearings and a complete bottom-end gasket set that includes all seals and gaskets needed to do the job •Only one part number to stock and order •Crankshafts are factory assembled and precision-trued to OEM specifications •Double-forged Wiseco connecting rods maintain superior dimensional consistency through improved grain flow •Shot-peening eliminates residual stresses and smoothly blends the rod forging surfaces •Corrosion-resistant surface treatment •Top and bottom end rod bores case-hardened to 58-62 RC to optimize bearing running surface •Crank pin bearing radial running clearance is optimized to ensure maximum performance •Precision honing ensures ultra round bearing surface •Precision engineered oiling slots maximize rod strength and bearing life •Double-drilled small ends provide the piston pin with extra lubrication and cooling, reducing distortion of top-end due to thermal transfer from the piston • Silver-coated bronze phosphor thrust washers, with dimpled design to increase oil retention and reduce friction between rod and washer interface •Crank pin bearings are manufactured from the highest quality hot-rolled steel; case-hardened to 58-62 RC •Caged needle roller bearings provide the highest possible rpm •Precision machined crank webs
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