BOLD MAGENTA part numbers are new for 2026 ENGINE PARTS-UNLIMITED.COM SNOW | 2026 ENGINE 527 SNOWMOBILE PISTONS (CONT) REPLACEMENT CIRCLIPS (PAIRS) SIZE (MM) PART # 16 C09-16 SIZE (MM) PART # 18 C09-18 SIZE (MM) PART # 20 C09-20 FITS MODEL CC NO. CYL. BORE STROKE STD. OR OVERSIZE PISTON ASSY. PART # RING SET PART # MOTO-SKI/SKI-DOO/ROTAX (CONT) Grand Touring 500 02-03, GSX Sport 500 SS 04-09, GTX 500 Sport SS 05-09, Legend 500 SS 02-04, MX Z 500 Adrenaline SS 04-07, MX Z 500 Trail SS 05-09, MXZ TNT 500 SS 08-09,Skandic 500 01-03 (600cc motor) 600 2 2.992” 2.590” Std. 09-785 R09-785 76 mm 65.8 mm 0.020” 09-785-2 R09-785-2 Formula DLX 600 99-01, Formula DLX 600 GS/GSE 01, Formula Z 600 99-00, Grand Touring 600 99-01, Grand Touring 600 GS/SE 02-03/Sport 02,10-12, GSX 600 GS 02, GSX 600 Sport 10, Legend 600 GS/SE/Sport 02-03, MX Z 600 99-03 (all), MXZ TNT 600 Sport 10-12, MX ZX 600 01-02, Skandic 600 SUVWT 03-08, Skandic 600 WT L/C 01-10, Summit 600 99-01, Summit 600 Sport/RER Sport 02, Summit 600 Sport 10-12 600 2 2.992” 2.590” Std. 09-785 R09-785 76 mm 65.8 mm 0.020” 09-785-2 R09-785-2 Formula Grand Touring SE 94-96, Formula SS 95-96, Formula Z 670 98-99, Mach 1 X 93, Mach 1 93-96, MX Z 670 96-99, Summit 670 95-99 670 2 3.071” 2.756” Std. 09-773 R09-773 78 mm 70 mm 0.020” 09-773-2 R09-773-2 Formula III 98-00, Grand Touring 700 98-00, Grand Touring SE 98-00, Mach 1 97-00 700 3 2.748” 2.402” Std. 09-781 R09-781 Formula Deluxe 00, Formula Deluxe GS/GSE 01, Formula Z 00, Grand Touring GS/SE/Sport 01-03, Legend 700 GS/SE/Sport 02-04, Legend GT 700 SE/Sport 04, MX Z 700 00-04 (all), Summit 700 00-03 (all) 700 2 3.071” 2.876” Std. 0910-0288 0912-0035 POLARIS Starfire 340 76,TX 340 73-82,TX-C 79-80 340 2 2.441” 2.189” Std. 09-70613 R09-70613 500 3 62 mm 55.6 mm 0.010” 09-70623 R09-70623 0.030” 09-70643 R09-70643 Indy Lite GT 91-94, Indy Sport/GT 87-90, Indy Sprint/ES 86-90, Indy Star Twin 85 340 2 2.441” 2.189” Std. 09-709 R09-709 62 mm 55.6 mm 0.020” 09-709-02 0912-0611 Indy 400 84-91, Indy 600 84-87, LE 86, SE 85 400 2 2.559” 2.362” Std. 09-707 R09-707 XCR440 95-96, XCR440 SP 94-96, XC440 Liquid Cooled 96-97 440 2 68.25 mm 60 mm Std. 0910-0662 0912-0082 Cobra 79, Cutlass SS 81-82, Galaxy 80-81, Indy Long Track/LT 84-86, Indy SS 83-86, Indy SS Long Track 83, Indy Sport 83,TX-C 81 440 2 2.667” 2.362” Std. - R09-704 67.75 mm 60 mm 0.020” 09-7042 R09-7042 Indy Trail 83-85,TX-C 82 440 2 2.667” 2.362” Std. 09-710 R09-704 Centurion 79-82 500 3 61.75 mm 55.6 mm 0.010” 09-70613 R09-70613 0.020” 09-70623 R09-70623 0.040” 09-70643 R09-70643 Indy L/C 89-06, Indy/SKS/SP 90-98, Indy Classic 89-02, 04-06, Indy Classic Touring 93-94/98-03, Indy EFI 92-98, Indy Super Sport 97-98, Indy SuperTrak 89-93, Indy Trail 86-99, Indy Widetrak 92-94 500 2 2.835” 2.362” Std. 8053 R9053 72 mm 60 mm 0.010” 8053-1 R9053-1 0.020” 8053-2 R9053-2 Indy 500 Classic 03, Indy 500 RMK 00-02, Indy 500 XC, XC SP 99-07 500 2 2.785” 2.519 Std. 09-720 R09-720 70.5 mm 64 mm 0.020” 09-720-2 R09-720-2 Indy XLT/SKS/XLT/SP 93-94 579 3 64 mm 60 mm Std. 09-714 R09-714 600 VES XC/SP 00-05, RMK 600, 00, 04-13, 600 Touring 00, 04-06, 600 Classic 01-05, Classic Touring 01-02, 600 Edge Touring 04-06, 600 Pro X/X2 04, 600 SwitchBack 04-13, Fusion 06, 600 2 77.25 mm 64 mm Std. 0910-0553 0912-0610 HO IQ 600 07, Indy 600 Classic 01-06,Touring 01-05, Indy 600 RMK 02-07, Indy 600 Touring 00-07, Indy 600 XC SP (EV) 00, Indy 600 XC SP Edge 00, Indy 600 XC SP 01-05 600 2 77.25 mm 68 mm Std. 09-728 R09-728 Indy XLT 600 SKS/SP 95-99, XLT 600 RMK Touring 95-99, XLT 600 LTD/LTD SP 95-99, XLT 600 Classis 95-99, XCR 600 95-99, XC 600 97 600 3 65 mm 60 mm Std. 09-716 R09-716 0.020” 09-7162 R09-7162 Indy Ultra SP/SPX/SE/Touring 96-98, XCR 700 98 700 3 66.5 mm 65 mm Std. 09-718 R09-718 XC 700 98-03, XC 700 SP 97-05, 700 Classic 01-04, 700 Classic/Edge Touring 03-04, 700 Pro X 03-04, 700 Pro X2 04, 700 SwitchBack 04, 700 RMK 97-04, 700 SKS 99-03 700 2 81 mm 68 mm Std. 0910-0554 0912-0064 Indy 800 Classic 04, Indy 800 Edge Touring 04-05, Indy 800 LE 01, Pro X 03-04, Indy 800 RMK 00-05, Indy 800 RMK SP 01, Indy 800 SKS 03, Indy Switchback 04-05, Indy 800 XC SP 01-05 800 2 85 mm 70 mm Std. 09-730 R09-730 SNO-JET AND YAMAHA Enticer 250 77-81 250 1 2.874” 2.323” 0.020” 09-8012 0912-0612 SL 71-73, SM 73-75, SR 73 73 mm 70 mm 0.020” 09-8102 R09-8102 Enticer 78-80/82/84-88, Enticer 340T 82-88, Excel III 81/83-88, Ovation 89-94, CS340E 89-00 340 2 2.362” 2.346” Std. 09-802 R09-802 0.020” - R09-8022 Exciter 76-81, GP 75, GP 76-77, Prestige 76 433 2 2.677” 2.346” Std. 09-8062 R09-8061 GP433 72-73 433 2 2.677” 2.346” Std. 09-827 R09-827 GP433 74, SL 72-75, SS 71 433 2 2.677” 2.346” Std. 09-827 R09-827 0.020” 09-8272 R09-8272 GPX433 74-75, SR433 71-73 433 2 68 mm 59.6 mm 0.040” 09-8144 R09-8144 SS 80-85 440 2 2.598” 2.520” Std. 09-807 R09-807 Mountain Lite 01, Phazer 99-01, Phazer ML 00, Phazer Mountain 480 99,Venture XL 97-06 480 2 2.835” 2.346” Std. 09-813 R09-813 72 mm 59.6 mm 0.020” 09-8132 R09-8132 Vmax LE/DX/ST 94-96, SX/SXR 500 99-01,Venture 97-01,Vmax 500, DLX 94-01 500 2 68 mm 68 mm Std. 09-825 R09-825 EC 79-84, SR 80-91,VK 88-07, XL 85-90 540 2 2.874” 2.520” Std. 09-808 R09-808 73 mm 64 mm 0.020” 09-8082 R09-8082 EX 87-90, EX II 91-92 569 2 2.874” 2.677” Std. 09-817 R09-817 73 mm 68 mm 0.020” 09-817-02 R09-817-02 0.040” 09-817-04 R09-817-04 Mt. Max 97-99,Venture 97-98,Vmax SX 97-98, Vmax LE/DX/ST 94-96,Vmax XT/XTC 97-99 600 2 2.933” 2.677” Std. 09-826 R09-826 1 Dual rings. 2 Dual ring piston. 3 Not for chrome bore.
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