BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | SNOW ENGINE ENGINE 540 SNOWMOBILE PISTONS (CONT) FITS MODEL CC NO. CYLINDERS BORE STROKE STD. OR OVERSIZE RING SET PART # PISTON ASSY. PART # BOMBARDIER/SKI-DOO/MOTO-SKI/ROTAX (CONT) Citation 4500/SS 79-83, Formula Deluxe 380 99-01, Formula S/S Electric 95-00, Grand Touring 380F 02-03, GSX/GTX 380F 05-06, Legend 380F 02-04, Mirage II/Special 80-85, MX Z380F 01-06 Nordik 81-84, Skandic 82-87, Skandic II 370/380R 95-00, Skandic II 377/R 92-94, Safari 377 84-88, Safari Saga 89, Safari Scout/Scout Electric 89-92, Safari Deluxe/L/LE 90-94, Touring 380F 01,Touring L (All models) 95-98,Touring LE/ES 95 369 2 62 mm 61 mm Std. KR09-751 K09-751 0.01” - K09-751-01 0.02” - K09-751-02 Grand Prix Special 79-81, Futura 500/E 81-82, Sonic 82,Alpine 503 I/II 83-95, Blizzard 5500/MX 79-84, Everest 500/E 81-83, Formula SL 95-99, Formula Deluxe 500F 99-01, Grand Touring 500F 02, Legend 500F 02, MX Z 500F 01-02, Nordic 60 88-91, Safari 503/R 88, Safari Cheyenne/R 89-91, Safari Escapade 87-89, Safari Rally 93-94, Safari Voyager 89, Skandic 503 86-87, Skandic 500/F WT/SWT (All models) 95-03 (except Widetrak LC), Stratos/E 87-88, Summit 500F 01-02,Touring 500F 01,Touring SLE 95-00, Blizzard 9700 83, Formula Plus 85-91, Safari Grand Luxe LC 86 500/521 2 72 mm 61 mm Std. - K09-741 0.01” - K09-741-01 0.02” - K09-741-02 Formula 500 (All models) 96-00, Grand Touring 500 96-99, MXZ 500 98-99, Skandic WT L/C 97-00, Summit 500 96-99,Touring 500 L/C 00 500 2 69.5 mm 65.8 mm Std. - K09-780 Expedition 550F 05-08/11-17, Freestyle 550F (All models) 07-09, Grand Touring 03, Grand Touring Sport 550F 10-15, GSX/GTX 550F 05-10, GSX 550F Sport 10, Legend 550F 03-04, MXZ 550F/X 03-10, MXZ 550F 11-12, MXZ 550F Sport 11-14, MXZ 550F TNT 10-12, Renegade Sport 550F 10-14, Skandic WT/SWT 04-17, Skandic SUV 04-10, Skandic Tundra LT (All models) 08-17, Summit 550F 03-09, Tunda 550F Sport/LT 11-17 553 2 75.86 mm 61 mm Std. 0911-0001 0910-0823 0.01” - 0910-0824 582 & 583 Engine Type: Formula/D lx. 583 97-99, Formula Grand Touring 93-94, Formula Mach I (All models) 82-92, Formula Plus (All models) 92-93, Formula Z 583 94-99, Grand Tour 580 95-99, Grand Touring 583 95-99, Grand Touring XTC 94, MX Z 583 96-98, Summit 583 94-98 581 2 76 mm 64 mm Std. KR09-772 - 0.01” - K09-77202 76.5 mm 0.02” - K09-772-04 600 H.O. RER Engine Type: Expedition 600 (All models) 05-18, Grand Touring 600 HO/E-TEC (All models) 10-18, GSX 600 (All models) 04-09, GSX 400 HO/E-TEC (All models) 10-15, GTX 600 (All models) 05-09, Legend 600 (All models) 04, MXZ 600 (All models except MXZ Trail 03 and MXZ 600 RS 09) 03-09, MXZ 600 HO/E-TEC (All models) 10-18, Renegade 600 HO/E-TEC (All models) 10-18, Skandic 600 HO/E-TEC (All models) 11-18, Summit 600 (All models) 03-09, Summit 600 HO E-TEC (All models) 10-18, Tundra Xtreme 600 HO/E-TEC (All models) 11-18 594 2 71.89 mm 73 mm Std. - 0910-57191 Std. - 0910-0826 Formula Deluxe 600 (All models) 00-01, Formula Z 600 00 , Grand Touring 600 (All models) 00-03, Grand Touring 600 Sport 10-14, GSX 600 Sport 10, Legend 600 (All models) 02-03, MXZ 600 (All models) 99-02, MXZ 600 Sport (All models) 13-17, MXZ 600 Trail 03, MXZ TNT 600 Sport 10-12, Skandic 600 (All models) 01-10, Summit 600 (All models) 99-02, Summit 600 Sport 10-12 597 2 75.88 mm 65.8 mm Std. KR09-785 K09-785 Formula Deluxe 670 99, Formula Mach I 670 93-94, Formula Mach I (All models) 93, Formula SS 6760 95-96, Formula Z 670 98-99, Grand Touring SE 94-96, Mach I 95-96, MX Z 670 96-98, Summit 670 95-99 (except H.O. engine) 669 2 77.9 mm 70 mm Std. KR09-773 K09-773 Formula Dlx. 700 (All models) 00-01, Formula Z 700 00, Grand Touring 700 (All models) 01-04, Legend 700 (All models) 02-04, MXZ 700 00-03, Summit (All models) 698 2 77.88 mm 73 mm Std. - K09-783 800 H.O./RER Engine Type: MXZ 800 (All models) 00-07, Summit 800 (All models) 00-07, Legend 800 (All models) 02-04, Grand Touring 800 (All models) 02-03, GSX 800 (All models) 04-07, GTX 800 (All models) 05-07 799 2 81.87 mm 75.7 mm Std. - 0910-0825 800R E-TEC Engine Type: Expedition LE/SE 800R E-TEC 16-17, Freeride 800R E-TEC (All models) 12-17, GSX SE 800R E-TEC XR (All models) 12-15, MXZ 800 E-TEC (All models) 12-17, Renegade 800 E-TEC (All models) 12-17, Summit SP & X 800R E-TEC 12-17 799 2 81.87 mm 75.7 mm Std. 0912-0751 0910-5037 NOTE: Not for any P-TEK engines. - 0910-50291 POLARIS/FUJI Indy Sport 87-90, Indy Sport GT 89-90, Indy Lite GT 91-93, Indy Lite Dlx. 92-93, Indy Sprint/ES 86-90 339 2 62.25 mm 55.6 mm Std. KR09-709 K09-709 340 (All models) 03-08, Euro Lite (All models) 94-98, Indy 340 (All models) 99-03, Lite (All models) 94-98, Star Lite (All models) 94-95 340 2 62.25 mm 55.6 mm Std. KR09-717 K09-717 Indy Super Sport 97-98, Indy Trail/Touring 99, Indy Trail 87-98 (except Supertrack 89) 488 2 71.89 mm 60 mm Std. - K09-712 500 (All models) 92-97, 500 98, 500 Classic 99-06, 500 Classic Touring 01-03, 500 Edge 03-04, 500 Indy (All models) 97-06, Classic (All models) 92-98, Classic Touring (All models) 93-94 488 2 71.98 mm 60 mm Std. KR09-711 K09-711 0.01” - K09-711-01 0.02” - K09-711-02 Indy Sport Touring (All models) 99-04, Indy Super Sport 550 99-06, Indy Trail RMK 99-06, Indy Trail Touring 00-06, Indy 550 Classic 02-06, 550 Pro X Fan 04 544 2 73 mm 65 mm Std. - K09-727 0.04” - K09-727-04 Indy 550 144/Adventure 16-18, Indy LXT (all) 17-21, Indy 550 Voyager 144/1 55 16-21, Widetrak 550 16-19 550 2 72.9 mm Std. - 0910-57211 Indy 580 XLT/SKS 93-94, Indy XLT SP 92-94 579 3 64 mm 60 mm Std. KR09-714 - 600 Axys Pro RMK 16-21, 600 Indy Voyager 15-21, 600 Indy SP (all) 13-21, 600 Pro RMK 13-15, 600 RMK 13-18, 600 Rush Pro 13-18, 600 Rush XCR 17-21, 600 Switchback Adventure 13-18, 600 Switchback Assault 14-21, 600 Switchback Pro 13-21, 600 Switchback SP 17-21, 600 Switchback XCR 18 599 2 77.14 mm 64 mm Std. - 0910-57201 Indy 600 Touring 00, Indy XLT 600/SP/S KS 95-99, Indy XLT RMK/Touring 95-99, Indy XLT LTD/LTD SP 95-99, Indy XLT Classic 95-99, Indy XCR 600 95-96, Indy XC 600 97 600 3 65 mm 60 mm Std. KR09-716 K09-716 Indy 650 (All models) 88-92, Indy Classic 88-89, Indy 650 RXL 90-97 650 3 67.75 mm 60 mm Std. - K09-713 700 XCR 98, Ultra (All models) 96-98 679 3 66.5 mm 65 mm Std. - K09-718 800 (All models) 08-10 795 2 85 mm 70 mm Std. - 0910-5040 800 Indy (All models) 14-15, 800 RMK, PRO RMK (All models) 11-14, 800 Rush (All models) 11-14, 800 Switchback (All models) 11-14, 800 Switchback Assault 15-16 795 2 85 mm 70 mm Std. - 0910-5041 YAMAHA Enticer/ET 340 78-88, Excel/EC 340 81-88, Ovation/CS 340 89-00 340 2 60 mm 59.6 mm Std. - K09-802 Phazer/PZ 480 (All models) 84-98, Phazer 500 (All models) 99-01, Venture/V T480 (All models) 91-98,Venture XL/TF 99-07 480/500 2 72 mm 59.6 mm Std. - K09-813 Mountain Max 600 97-99,V-Max 600 (All models) 94-98,V-Max 600 99, Venture 600 97-98 600 2 74.8 mm 68 mm Std. - K09-826 Mountain SRX 700 98, SRX 700 98-02, SX Viper (All models) 02-04, SX Viper Mountain 03-05,Venture 700 04 696 3 69 mm 62 mm Std. - 0910-2664 1 Dual ring design.
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