BOLD MAGENTA part numbers are new for 2026 PISTON & PISTON KITS PARTS-UNLIMITED.COM ATV/UTV | 2026 PISTON & PISTON KITS 1079 CYLINDER KITS FITS MODEL DESCRIPTION COMPRESSION RATIO PART # ARCTIC CAT DVX400 (all) 04-08 Standard bore kit (90 mm) 11.3:1 0931-0842 Standard bore high-compression cylinder kit (90 mm) 13.5:1 0931-0843 +4 mm big bore 434cc kit 11.3:1 0931-0135 HONDA TRX450ER 06-14,TRX450R 06-09 Standard bore kit (96 mm) 12:1 0931-0285 +3 mm big bore 477cc kit 12:1 0931-0175 TRX450R 04-05 Standard bore kit (94mm) 10.5:1 0931-0284 Standard bore high-compression cylinder kit (94 mm) 13.1:1 0931-0301 +3 mm big bore 479cc kit 10.5:1 0931-0133 TRX700X 08-09 Standard bore kit (102 mm) 10:1 0931-0331 +3 mm big bore 727cc kit 10:1 0931-0332 KAWASAKI KFX400 03-06 Standard bore kit (90 mm) 11.3:1 0931-0842 Standard bore high-compression cylinder kit (90mm) 13.5:1 0931-0843 +4 mm big bore, (94 mm) 434cc kit 11.3:1 0931-0135 Brute Force 750 05-14,Teryx 750 08-13 Standard bore kit, front (85 mm) 8.8:1 0931-0507 Standard bore kit, rear (85 mm) 8.8:1 0931-0508 +6mm big bore (91 mm), 860cc front/rear kit 9:1 0931-05042 Brute Force 750 15-23 Standard bore kit, front (85 mm) 9.3:1 0931-0609 Standard bore kit, rear (85 mm) 9.3:1 0931-0611 +6 mm big bore (91 mm), 860cc front/rear kit 9.2:1 0931-0613 Teryx4 750 4x4 12-13 Standard bore high compression kit, rear 11.5:1 0931-1092 Standard bore kit 8.8:1 0931-1089 Standard bore high compression kit 11.5:1 0931-1090 KRX/4 1000 20-23 Standard bore cylinder (92 mm) 11.5:1 0931-1119 POLARIS Ranger 800 08-10 Standard bore kit 10.2:1 0931-0614 Ranger 800 11-17 Standard bore kit (80 mm) 10.2:1 0931-0616 Sportsman 800 05-10 Standard bore kit (80 mm) 10.2:1 0931-0614 Sportsman 800 11-15 Standard bore kit (80 mm) 10.2:1 0931-0616 ACE 900 17-19, Ranger XP 900/Crew 4x4 17-19, RZR 900 17-23, Ranger XP 1000 20 Standard bore kit (93 mm) 10.5:1 0931-0852 Ranger 900 Crew 14-16, XP 900 (all) 13-16 Standard bore kit (93 mm) 10.5:1 0931-0734 Standard bore high-compression kit (93 mm) 11.5:1 0931-0735 RZR 900 11-14 Standard bore kit (93 mm) 10.6:1 0931-0657 Ranger XP 900 11-12 +5 mm big bore kit 975cc 10.6:1 0931-05111 Sportsman ACE 900 16 Standard bore kit (93 mm) 10.5:1 0931-0734 Standard bore high-compression kit (93 mm) 11.5:1 0931-0735 RZR XP Turbo/Pro/R 925 16-23 Standard bore cylinder (93 mm) 9:1 0931-1120 (only for RZR XP Turbo/4 16) Standard bore cylinder kit (93 mm) 9:1 0931-1121 (only for RZR XP Turbo/4 17) Standard bore cylinder kit (93 mm) 9:1 0931-1122 (only for RZR Turbo Pro XP/S/4 18-22) Standard bore cylinder kit (93 mm) 9:1 0931-1123 General 1000 EPS 16 Standard bore kit (93 mm) 10.5:1 0931-0618 +5 mm big bore kit 10.5:1 0931-06221 General 1000 17-23, General XP 1000 20-23, Ranger 1000 18-23, Ranger Crew 1000 17-23, RZR XP/4 1000 17-23 Standard bore kit (93 mm) 11:1 0931-0731 Standard bore high-compression kit (93 mm) 11.5:1 0931-0732 RZR XP 1000 14-18 Standard bore kit (93 mm) 10.5:1 0931-0618 +5 mm big bore kit 10.5:1 0931-06221 SUZUKI LT-Z400 QuadSport Z (all) 03-13 Standard bore kit (90 mm) 11.3:1 0931-0842 Standard bore high-compression kit (90 mm) 13.5:1 0931-0843 +4 mm big bore 434cc kit 11.3:1 0931-0135 LT-Z400 QuadSport Z 14 Standard bore kit (90 mm) 11.3:1 0931-0283 LT-R450 QuadRacer 06-09 Standard bore kit (95.5 mm) 11.7:1 0931-0286 Standard bore high-compression kit (95.5 mm) 13:1 0931-0303 +2.5 mm big bore, 474cc kit 11.7:1 0931-0176 CYLINDERS AND CYLINDER KITS • Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders •Three kit options to choose from: Standard Bore, Standard Bore high-compression and Big Bore • Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise •Nickel Silicon Carbide-plated for long life • Kits come complete with gaskets, cylinder, piston, rings, pin and clips •Big bore cylinders do not require machine work (unless noted) • Replacement Vertex piston, rings, clips and pins also available; see pages 1068-1072 •Made in the U.S.A. CYLINDERS AND CYLINDER KITS continued on next page. 1 Must use heavy-duty connecting rods. 2 May require case boring.
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