2021 Parts Unlimited Offroad

ENGINE parts-unlimited.com 2021 PARTS UNLIMITED OFFROAD BOLD MAGENTA part numbers are new for 2021 1048 DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES. SEE PAGE 4 FOR IMPORTANT EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND WARRANTY INFORMATION. HIGH-PERFORMANCE PISTONS (CONT) 3 (77‑78mm). FITS MODEL BORE (MM) X STROKE (MM) DISPL. (CC) BORE SIZE (MM) OVER SIZES (MM) PK KIT PART # PISTON PART # REPL. RING SET PART # REPL. CIRCLIPS PART # REPL. WRIST PIN PART # TOP‑END BEARING PART # HONDA MOTORCYCLE 4‑STROKE (Correct replacement ring style is stamped on dome of piston – Example “C” for XC, “G” for XG and “H” for XH) (CONT) CRF125F 14‑20 52.4 ‑ 53.5 1.1 - - 0912-0124 CW12 - - 10:1 Compression x ArmorGlide skirt coated 57.9 CRF150F 06‑17 57.3 ‑ 57.5 ‑ - 0910-3946 - CW14 - - 10:1 High Compression x 58.0 - 0910-3947 0912-0117 ArmorGlide skirt coated 57.8 CW18 CRF150R 07‑09 66 150 66.0 STD 0903-0688 0910-0819 - Stock compression 11.7:1 x Skirt coated 43.7 CRF150R 07‑09 66 150 66.0 STD - 0910-0821 - High‑compression x 159 68.0 2.0 - 0910-0822 - 66mm=12.2:1 CR 43.7 68mm=12.4:1 CR Skirt coated XR/​XL185 + .100 Big Bore 86‑91 65.5 192 65.5 STD - 4156M06550 2579XC CW15 S-522 - 10:1 Compression x 66.0 0.5 0903-0211 4156M06600 2598XC Cylinder boring required for oversizes 57.8 66.5 1.0 - 4156M06650 2618XC XR/​XL185 +.100 Big Bore 92‑02 65.5 192 65.5 STD 0903-0212 4156M06550 2579XC CW15 S-522 - 10:1 Compression x 66.0 0.5 0903-0270 4156M06600 2598XC Cylinder boring required for oversizes 57.8 66.5 1.0 0903-0201 4156M06650 2618XC XR200 to 83 65.5 192 65.5 STD 0903-0231 4156M06550 2579XC CW15 S-522 - 10:1 Compression x 66.0 0.5 0903-0172 4156M06600 2598XC 57.8 66.5 1.0 0903-0235 4156M06650 2618XC CRF230F 03‑19 65.5 223 65.5 STD - 0910-0332 - CW15 - - x 11:1 Compression 66.2 CRF250R 04‑07 78 249 78.0 STD 0903-0553 0910-0333 0912-0120 CW16 0913-0008 - CRF250X 04‑17 x 12.9:1 Standard Compression 52.2 CRF250R 04‑07 78 249 78.0 STD 0903-0551 0910-0756 0912-0120 CW16 0913-0008 - CRF250X 04‑17 x 13.5:1 Hi‑Compression. 52.2 ArmorGlide skirt coated CRF250R 04‑09 78 276 82 4.00 - 0910-2938 - CW16 0913-0008 - 13.5:1 Compression x 276cc Big Bore Kit 52.2 ArmorGlide skirt coated CRF250R 08‑09 78 249 78.0 STD - 0910-1677 0912-0120 CW16 0913-0008 - 13.1:1 Stock‑Compression x ArmorGlide skirt coated 52.2 CRF250R 08‑09 78 249 78.0 STD - 0910-2931 0912-0120 CW16 0913-0008 - 13.6:1 High‑Compression x ArmorGlide skirt coated 52.2 CRF250R 10‑13 76.8 249 76.8 STD 0903-0940 0910-2886 - CW16 0913-0008 - 13.2:1 Stock Compression x ArmorGlide skirt coated 53.8 CRF250R 14‑15 76.8 ‑ 76.8 STD 0903-1137 - - CW16 0913-0008 - 13.5:1 Stock Compression x 53.8 XL250 79‑82 74 248 74.0 STD - - 2913XC CW19 S-376 - XR250 thru 83 x 74.5 0.5 - - 2933XC 10:1 Compression 57.8 75.0 1.0 - 4171M07500 2953XC 75.5 1.5 - - 2973XC 76.0 2.0 - - 2992XC XR250R 84‑85 75 250 75.0 STD - - 2953XG CW17 S-523 - XL250R 84‑87 Radial Head x 75.5 0.5 - 4329M07550 2973XG 56.5 76.0 1.0 - 4329M07600 2992XG XR250R 86‑04 73 250 73.0 STD 0903-0265 4466M07300 2874XC CW17 S-523 3 - 10.5:1 Compression; x 73.5 0.5 0903-0216 4466M07350 2894XC cylinder boring 59.5 74.0 1.0 0903-0193 4466M07400 2913XC required for oversizes 75.5 2.5 - 0910-0753 2973XC 77.0 4.0 0903-0570 0910-0754 0912-0118 78.0 5.0 0903-0571 0910-0755 0912-0119