BOLD MAGENTA part numbers are new for 2024 PISTON & PISTON KITS PARTS-UNLIMITED.COM ATV/UTV | 2024 HIGH-PERFORMANCE PISTONS continued on next page. 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 # YAMAHA (2-STROKE) (CONT) YFZ350 Banshee 87-06 (Liquid Cooled Twin) 64 x 54 64.0 STD 346 Stock 795M06400 - 2520CD CW16 S-486 - Long connecting rod (+5mm) Stroker (+4mm) piston. Use w/ Wiseco crank PART #WPC129 64.5 0.50 352 795M06450 - 2539CD (Racer’s Choice) 65.0 1.00 358 795M06500 - 2559CD 65.5 1.50 364 795M06550 - 2579CD 66.0 2.00 370 795M06600 - 2598CD YAMAHA (4-STROKE) YFM80 Badger 85-01/ YFM80 Raptor 02-06 47 x 45.6 47.0 STD 79 11:1 - 0903-0660 0912-0112 CW13 - - YFM80 Moto 4 85-93, YFM80/G Grizzly 05 47.5 0.50 81 0910-0390 - 0912-0113 48.0 1.00 83 - 0903-0662 0912-0114 50.0 3.00 90 - 0903-0663 - YFM125R Raptor 11-13 54 x 54 54.0 STD 124 11:1 0910-4155 - - CW16 - - 54.5 0.50 0910-4156 - - YFM125R Raptor 11-13 54 x 54 54.0 STD 124 13:1 0910-4158 - - CW16 - - 54.5 0.50 0910-4159 - - 55.0 1.00 0910-4160 - - YFM/YTM 200 84-85 67 x 55.7 67.0 STD 196.3 10.25:1 4292M06700 - 2638XC CW16 S-256 - Moto-4/YFM/DXT 87-88 67.5 0.50 4292M06750 - 2658XC YTM/YFM 225 84-88 70 x 58 70.0 STD 223.6 10.25:1 4312M07000 - 2756XC CW16 - - Moto-4 87-88 70.5 0.50 4312M07050 - - 71.0 1.00 4312M07100 - 2795XC YFM250 Timberwolf 90-00 71 x 58 71.0 STD 229.6 8.7:1 4675M07100 0903-0322 - CW16 - - YFB250 Bear Tracker 00-04, Bruin 05-06, Big Bear 250 07-09 71.5 0.50 4675M07150 0903-0350 - YFM250R Raptor 07-13 74 x 58 74.0 STD 249 10.5:1 0910-2854 - - CW17 - - ArmorGlide skirt coated YFM250R Raptor 07-13 74 x 58 74.0 STD 249 13:1 0910-4164 - - CW17 - - ArmorGlide skirt coated YFM250R Raptor 07-13 74 x 58 81.0 7.00 299 11:1 0910-2855 - 3189XG CW17 - - ArmorGlide skirt coated; Big bore sleeve required YFM350X Warrior 87-04, YFM350 Raptor 05-13 83 x 64.5 83.0 STD 349 10.25:1 4419M08300 0903-0360 3268XC - S-376 - YFM350 Big Bear 89-99, 350 Grizzly 07-14 83.5 0.50 4419M08350 0903-0373 3287XC BW350 Big Wheel 99, YFM350 Moto 4 99 84.0 1.00 4419M08400 - 3307XC ArmorGlide skirt coated YFM350X Warrior 87-04, YFM350 Raptor 05-13 83 x 64.5 83.0 STD 349 11:1 0910-4174 - 3268XC - S-376 - YFM350 Big Bear 89-99, 350 Grizzly 07-14 83.5 0.50 0910-4175 - 3287XC BW350 Big Wheel 99, YFM350 Moto 4 99 84.0 1.00 - - 3307XC ArmorGlide skirt coated YFM350X Warrior 87-04, YFM350 Raptor 05-13 83 x 64.5 83.0 STD 349 12:1 0910-3939 - 3268XC - S-376 - YFM350 Big Bear 89-99, 350 Grizzly 07-14 83.5 0.50 0910-3940 - 3287XC BW350 Big Wheel 99, YFM350 Moto 4 99 84.0 1.00 0910-3941 - 3307XC ArmorGlide skirt coated Kodiak 400 93-99/ YFM400 Big Bear 00-12 83 x 71.5 83.0 STD 386 8.6:1 - 0903-0664 3268XC - S-376 - 83.5 0.50 - 0903-0665 3287XC 84.0 1.00 - 0903-0666 3307XC YFM400 Kodiak 00-08 84.5 x 71.5 84.5 STD 401 10.5:1 0910-3167 - - CW20 - - 85.0 0.50 0910-3168 - - 85.5 1.00 0910-3169 - - 450 Kodiak 03-06/18-19, 450 Grizzly 07-14 84.5 x 75 84.5 STD 420 11:1 0910-2851 - - - - - 450 Rhino 06-09, 450 Wolverine 06-10 85.0 0.50 0910-2852 - - ArmorGlide skirt coated 85.5 1.00 0910-2853 - - YFZ450 04-05 95 x 62 95.0 STD 439 12:1 0910-1668 0903-0474 - - - - ArmorGlide skirt-coated YFZ450 04-05 95 x 62 95.0 STD 439 13:1 0910-0393 0903-0361 - CW20 - - YFZ450 04-05 95 x 62 98.0 3.00 467 11.4:1 0910-2845 - - CW20 - - ArmorGlide skirt coated (big bore cylinder required) 1027
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