BOLD MAGENTA part numbers are new for 2025 PARTS-UNLIMITED.COM 2025 | ATV/UTV PISTON & PISTON KITS PISTON & PISTON KITS 1074 HIGH-PERFORMANCE PISTONS (CONT) FITS MODEL STOCK BORE X STROKE (MM) BORE SIZE (MM) OVERIZE (MM) DISPLACEMENT (CC) COMPRESSION RATIO PISTON PART # PK KIT PART # RING SET PART # CIRCLIP PART # WRIST PIN PART # TOP-END BEARING PART # POLARIS (2-STROKE) (CONT) ATV 300 94-00 74.5 x 65 74.5 STD 283 Stock - 0903-0638 - CW18 S-513 B1014 Pro-Lite 75.0 0.50 - 0903-0639 2953TD 75.5 1.00 721M07550 0903-0640 - 76.0 1.50 721M07600 - - Trail Boss 350 80 x 70 80.0 STD 352 Stock - - 3150TD CW18 S-278 B1002 80.5 0.50 - - 3169TD 81.5 1.50 639M08150 - - 82.0 2.00 - - 3228TD ATV 400 94-03 83 x 70 83.0 STD 400 Stock 675M08300 0903-0359 - CW18 S-278 B1002 83.25 0.25 0910-2806 0903-0459 - 83.5 0.50 675M08350 0903-0376 3287TD 84.0 1.00 675M08400 0903-0372 3307TD 84.5 1.50 675M08450 - - 85.0 2.00 675M08500 0903-0463 - POLARIS (4-STROKE) Sportsman 90 07-14 47 x 51 47.0 STD 88.5 10.5:1 0910-3934 - - - - - Outlaw 90 07-14 47.5 0.50 0910-3935 - - RZR 170 09-15 61 x 58 61.0 STD 169 Stock 0910-4180 - - CW13 - - 62.0 1.00 0910-4181 - - Scrambler/Sportsman 500 96-08, 92 x 75 92.0 STD 499 10.2:1 4677M09200 0903-1274 - CW23 S591 - Xplorer 500 96-97, Big Boss 500 6x6 98-99, 92.5 0.50 4677M09250 0903-0919 3642XC Magnum/Worker 500 4x4 99-02 93.0 1.00 4677M09300 0903-1275 - Ranger 500 4x4, 6x6 98-13, - - - - - - ATP 500 H.O. 04-05 - - - - - - 500 Predator 03-07 99.2 x 64.6 99.2 STD 499 12.5:1 0910-0282 0903-0653 - - - - Outlaw 525 07-08 95 x 72 95.0 STD 510 11:1 - 0903-1161 - CW20 - - 2.00 12.5:1 - 0903-1162 - Ranger RZR 570 12-21, 99 x 73.6 73.0 STD 566 - 0910-4170 - - - - - Sportsman 570 14-21 73.5 0.50 0910-4171 - - Ranger RZR 800 07-14, Sportsman 800 05-12 80 x 76.5 80.0 STD 769 10.2:1 0910-2856 0903-1284 - - - - ArmorGlide skirt coated Ranger RZR 800 07-14, Sportsman 800 05-12 80 x 76.5 80.0 STD 769 11:1 0910-2857 0903-1285 - - - - ArmorGlide skirt coated Sportsman 850 09-21 87 x 71 87.0 STD 844 - 0910-4172 - - - - - Forrest 850 09-17, XP 850 H.O. 09-17,Scrambler 850 13-21 ArmorGlide skirt coated Ranger RZR XP 900 11-14, 93 x 64.5 93.0 STD 876 10.6:1 0910-2818 - - - - - RZR XP 4 900 4x4 12-14 ArmorGlide skirt coated Ranger RZR XP 900 11-12, RZR XP 4 900 4x4 12-14 93 x 64.5 93.0 STD 876 12.5:1 0910-2819 - - - - - ArmorGlide skirt coated Ranger RZR XP 1000 14-21 93 x 73.5 93.0 STD 999 11:1 0910-3943 - - - - - SUZUKI (2-STROKE) LT80 87-06 50 x 42 50.0 STD 82 Stock 673M05000 0903-0343 1969CD CW12 - B1000 50.5 0.50 673M05050 0903-0369 1988CD 51.0 1.00 - 0903-0370 2008CD 52.0 2.00 0910-0380 0903-0336 - - LT250RF/RG/QuadRacer 85-86 70 x 64.8 70.0 STD 247 Stock 534M07000 - 2756CD CW18 S-513 B1002 Liquid Cooled 70.5 0.50 534M07050 - 2776CD *Must use Stock thrust washers 71.0 1.00 534M07100 0903-0645 2795CD 71.5 1.50 534M07150 0903-0646 2815CD 72.0 2.00 534M07200 0903-0647 2835CD LT250/QuadRacer 87 67 x 70 67.0 STD 246.8 Stock - - 2638CD CW18 S-513 B1002 *Must use Stock thrust washers 67.5 0.50 - - 2658CD 67.75 0.75 - - 2668CD 68.0 1.00 552M06800 - 2677CD 68.25 1.25 - - 2687CD 68.5 1.50 - - 2697CD 69.0 2.00 552M06900 - 2717CD LT250/QuadRacer 88-92 67 x 70 67.0 STD 246.8 Stock 571M06700 - 2638CD CW18 S-484 B1002 Pro-Lite 67.5 0.50 571M06750 - 2658CD 67.75 0.75 - - 2668CD 68.0 1.00 571M06800 - 2677CD 68.25 1.25 - - 2687CD 68.5 1.50 571M06850 - 2697CD 69.0 2.00 571M06900 - 2717CD
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