BOLD MAGENTA part numbers are new for 2023 PARTS-UNLIMITED.COM 2023 | ATV/UTV PISTON & PISTON KITS 870 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 # HONDA (4-STROKE) (CONT) TRX400EX 99-08/TRX400X 09-14 85 x 70 85.0 STD 397 10.0:1 4606M08500 0903-0345 3347XC CW20 - - 85.5 0.50 0910-2830 0903-0476 - 86.0 1.00 4606M08600 0903-0374 3386XC 87.0 2.00 - 0903-0483 3425XC 88.0 3.00 - 0903-0484 3465XC TRX400EX 99-08/TRX400X 09-14 85 x 70 85.0 STD 397 11:1 4628M08500 0903-0353 3347XC CW20 - - 85.5 0.50 0910-2831 0903-0475 - 86.0 1.00 - 0903-0471 3386XC 87.0 2.00 - 0903-0473 3425XC 88.0 3.00 - 0903-0485 3465XC TRX400EX 99-08/TRX400X 09-14 89 x 70 89.0 4.00 440 11:1 4667M08900 0903-0354 3504XC CW20 S553 - Cylinder sleeving and boring required, order PART #0931-0054 (88mm sleeve) TRX400 Foreman 4x4 95-03 86 x 68 86.0 STD 394.9 8.2:1 4669M08600 - 3386XC CW19 - - 87.0 1.00 4669M08700 - 3425XC TRX420 Rancher 07-21 86.5 x 71.5 86.5 STD 420 Stock 0910-2820 - - CW19 - - ArmorGlide skirt coated 87.0 0.50 0910-2821 - - * Sleeve required for 87.5-88.5mm 87.5 1.00 0910-2822 - - TRX450 Foreman ES/S 4x4 98-04 90 x 68 90.0 STD 432 9.5:1 0910-2833 0903-0648 3544XC CW19 - - 90.5 0.50 0910-2834 0903-0649 - 91.0 1.00 0910-2835 0903-0650 - 91.5 1.50 0910-2836 0903-0651 - 92.0 2.00 - 0903-0652 3622XC TRX450R 04-05 94 x 64.8 94.0 STD 450 10.5:1 0910-0665 0903-0477 - - - - ArmorGlide skirt coated TRX450R 04-05 94 x 64.8 94.0 STD 450 11.5:1 0910-0666 0903-0472 - CW21 - - ArmorGlide skirt coated TRX450R 04-05 94 x 64.8 94.0 STD 450 13.1:1 0910-0668 0903-0486 - - - - ArmorGlide skirt coated, Gas Ported TRX450R 04-05 94 x 64.8 98.0 5.00 489 12.5:1 0910-2839 - - CW21 - - ArmorGlide skirt coated *Kit included pistons, rings, piston pins, retainer clips, gasket. Sleeve or big-bore cylinder required TRX450R/ER 06-14 96 x 64.8 96.0 STD 450 12.0:1 0910-2844 0903-0479 - CW21 - - ArmorGlide skirt coated TRX450R/ER 06-14 96 x 64.8 96.0 STD 450 13.5:1 0910-1671 0903-0480 - CW21 - - ArmorGlide skirt coated TRX650 Rincon 03-05 100 x 82.6 102.0 STD 649 11:1 0910-4154 - - - - - TRX680 Rincon 06-22, 102 x 82.6 102.0 STD 675 10:1 0910-3924 - - - - - Pioneer 700 14-21 103.0 1.00 688 10:1 0910-3925 - - - TRX700XX 08-12 102 x 84 102.0 STD 686 10.5:1 0910-4161 - - CW24 - - 103.0 1.00 0910-4162 - - 104.0 2.00 0910-4163 - - KAWASAKI (2-STROKE) KFX80 03-06 50 x 42 50.0 STD 82 Stock 673M05000 0903-0343 1969CD CW12 - B1000 50.25 0.25 0910-2805 0903-0457 - 50.5 0.50 673M05050 0903-0369 1988CD 51.0 1.00 673M05100 0903-0370 2008CD 51.5 1.50 673M05150 0903-0344 - 52.0 2.00 0910-0380 0903-0336 - KXT250 Tecate 84-87 70 x 64.9 70.0 STD 249 Stock 439M07000 - 2756CD CW18 S-513 B1022X *Electrofusion Bore – Cylinder 70.5 0.50 439M07050 - 2776CD sleeving or replating 71.0 1.00 439M07100 - 2795CD required for oversizes 71.5 1.50 - - 2815CD 72.0 2.00 - - 2835CD Tecate-4 250 87-88 (4 Wheeler Only) 67.4 x 70 67.4 STD 249 Stock 556M06740 - 2652CD CW18 S-508 B1022X Pro-Lite 68.0 0.60 - - 2677CD *Electrofusion Bore – 68.5 1.10 556M06850 - 2697CD Cylinder sleeving or replating 69.0 1.60 - - 2717CD required for oversizes 69.5 2.10 556M06950 - 2736CD KAWASAKI (4-STROKE) KLF220 Bayou 88-03 67 x 61 67.0 STD 215 9.3:1 4670M06700 0903-0324 2638XC CW16 - - 67.5 0.50 4670M06750 0903-0355 2658XC - - - 68.0 1.00 - 0903-0325 - - - - KSF250 Mojave 87-05 74 x 58 74.0 STD 249 11.5:1 4418M07400 0903-1276 2913XC CW18 - - (Liquid Cooled) 74.5 0.50 4418M07450 0903-1277 2933XC 75.0 1.00 4418M07500 0903-1278 2953XC
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