BOLD MAGENTA part numbers are new for 2023 PARTS-UNLIMITED.COM 2023 | OFFROAD PISTON & PISTON KITS 1144 HIGH-PERFORMANCE PISTONS (CONT) 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) Race Only 39 88 52.0 13.0 - - 0912-0111 CW13 - - XR50R 88-03 x CRF50F 04-13 41.4 13:1 Compression *Will not fit OEM cylinder XR50R 00-03 39 49.5 39.0 STD - 0910-0202 - CW13 0913-0005 - CRF50F 04-13 x 50.7 39.5 0.50 - 0910-0203 - 11:1 Compression 41.40 52 40.0 1.00 - 0910-0204 - XR70R 97-03 47 72 47.0 STD 0903-0933 0910-0747 0912-0112 CW13 0913-0005 - CRF70F 04-12 x 73 47.5 0.50 - 0910-0748 0912-0113 10.5:1 Compression 41.4 75 48.0 1.0 - 0910-0749 0912-0114 Cylinder boring required for oversizes 76 48.5 1.5 - - 0912-0115 XR80R 79-91 47.5 79.7 48.0 0.50 0903-0229 0910-0324 0912-0114 CW13 0913-0005 - 9.7:1 Compression x 48.5 1.00 0903-0230 0910-0325 0912-0115 45 49.0 1.50 0903-0579 - - 49.5 2.0 - 0910-0327 - XR80R 92-03 47.5 79.7 48.0 0.50 0903-0173 0910-0324 0912-0114 CW13 0913-0005 - CRF80F 04-13 x 48.5 1.00 0903-0174 0910-0325 0912-0115 9.7:1 Compression 45 49.0 1.50 0903-0232 - - 49.5 2.0 - 0910-0327 - XR100R 85-91 53 99.2 53.5 0.5 - 0910-0328 0912-0124 CW14 - - 9.4:1 Compression x 54.0 1.0 0903-0242 0910-0329 0912-0125 45 54.5 1.5 - - 0912-0126 55.0 2.0 - 0910-0331 0912-0127 XR100R 92-03 53 99.2 53.5 0.5 0903-0199 0910-0328 0912-0124 CW14 0913-0006 - CRF100F 04-12 x 54.0 1 0903-0180 0910-0329 0912-0125 9.4:1 Compression 45 54.5 1.5 - - 0912-0126 55.0 2.0 - 0910-0331 0912-0127 XR100R 85-03 58 120 58.00 5.0 - 0910-0752 0912-0117 CW14 - - CRF100F 04-13 x 12:1 Compression 45 58mm Big Bore. Cylinder sleeving required for oversizes CRF125F 14-22 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
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