BOLD MAGENTA part numbers are new for 2023 PARTS-UNLIMITED.COM 2023 | ATV/UTV PISTON & PISTON KITS 880 PISTON KITS (CONT) FITS MODEL DISPLACEMENT BORE OVERSIZE COMPRESSION RATIO WEIGHT (GRAMS) SKIRT PART # SUG. RETAIL YAMAHA YFM250 Raptor 08‑11 249cc 74mm STD 12.0:1 192 FSR 0910‑5884 $277.63 YFM350 Warrior 87‑04, 366cc 85mm +2mm 12.0:1 289 Round 0910‑5845 277.63 YFM350 Raptor 05‑13, 366cc 85mm +2mm 10.5:1 279 Round 0910‑5849 242.50 YFM350 Grizzly 07‑14 YFZ450 04‑05 439cc 95mm STD 13.5:1 282 FSR 0910‑5848 277.63 470cc 98mm +3mm 13.0:1 310 FSR 0910‑5850 277.63 YFZ450 06‑13, 449cc 95mm STD 12.5:1 293 FSR 0910‑5862 277.63 YFZ450R 09‑20 449cc 95mm STD 13.5:1 299 FSR 0910‑5861 277.63 480cc 98mm +3mm 13.0:1 316 FSR 0910‑5860 277.63 YFZ450 06‑13, 449cc 95mm STD 13.5:1 250 FSR 0910‑5871 301.05 YFZ450R 09‑20 Pro Series 2‑ring YFZ450 06‑13, 449cc 95mm STD 12.5:1 266 FSR 0910‑5895 301.05 YFZ450R 09‑20 449cc 95mm STD 13.5:1 260 FSR 0910‑5885 301.05 Pro Series 3‑ring 478cc 98mm +3mm 13.5:1 287 FSR 0910‑5940 301.05 YFM660R Raptor 01‑05, 673cc 102mm +2mm 10.0:1 380 FSR 0910‑5867 301.05 YFM660 Girzzly 02‑07, 686cc 102mm +2mm 11.0:1 382 FSR 0910‑5868 301.05 YXR660 Rhino 06‑07 – Pro Series YFM660R Raptor 01‑05, 719cc 102mm +2mm 11.0:1 353 FSR 0910‑5877 301.05 YFM660 Grizzly 02‑07, 660 Rhino 06‑07 – Pro Series (4mm Stroker piston) YFM700 Raptor 06‑14, 686cc 102mm STD 11.0:1 336 FSR 0910‑5910 301.05 YFM700 Grizzly 07‑13, 686cc 102mm STD 12.5:1 358 FSR 0910‑5911 301.05 YXR700 Rhino 08‑14 735cc 105.5mm +3.5mm 10.0:1 346 FSR 0910‑5896 301.05 735cc 105.5mm +3.5mm 11.0:1 366 FSR 0910‑5897 301.05 735cc 105.5mm +3.5mm 12.5:1 385 FSR 0910‑5898 301.05 YXZ1000 16‑20 998cc 80mm STD 9.5:1 ‑ FSR 0910‑5946 772.19 998cc 80mm STD 11.5:1 ‑ FSR 0910‑5947 772.19 FITS MODEL DIAMETER (MM) PISTON VERSION PISTON KIT PART # TOP END KIT PART # RING PART # WRIST PIN PART # CIRCLIPS PART # ARCTIC CAT DVX 400 04‑07 89.96 Forged Replica 0910‑0978 ‑ 0912‑0236 ‑ ‑ 89.97 Forged Replica ‑ 0910‑3839 0912‑0236 ‑ ‑ 89.98 Forged Replica ‑ ‑ 0912‑0236 ‑ ‑ PISTON KITS, RINGS,WRIST PINS AND CIRCLIPS • All pistons are heat-treated with a T-5 hardening and tempering cycle • All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life • Cast piston kits are gravity-cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston • Forged pistons are forged from 2618 aluminum for superior strength and durability • Forged High Compression pistons improve power and torque across entire rpm range • Big Bore pistons increase engine’s displacement, torque, and peak horsepower • Forged Replica pistons are forged OE replacements • Replica pistons and all rings are OEM replacements • Kits include piston, rings, wrist pin and circlips • Replacement two-stroke piston rings sold individually; four-stroke piston rings sold as a set NOTE: Top End Kits include Piston Kit and a Top End Gasket Kit, top-end bearing and cam chain. PISTON VERSIONS Cast Replica – Cast OE replacement piston Cast Big Bore – Big bore stock compression cast piston Forged Replica – Forged OE stock compression piston Forged Big Bore – Forged OE stock compression big bore piston Forged High Comp – Forged high compression pistons 0910‑0978
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