BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | OFFROAD PISTON & PISTON KITS PISTON & PISTON KITS 1402 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) CRF70F 04-12, XR70R 97-03 47 72 47 STD 0903-0933 0910-0747 0912-0112 CW13 0913-0005 - 10.5:1 Compression x 73 47.5 0.5 - 0910-0748 0912-0113 Cylinder boring required for oversizes. 41.4 75 48 1.0 - - 0912-0114 76 48.5 1.5 - - 0912-0115 CRF80F 04-13, XR80R 92-03 47.5 79.7 48 0.5 0903-0173 0910-0324 0912-0114 CW13 0913-0005 - 9.7:1 Compression x 48.5 1.0 0903-0174 0910-0325 0912-0115 45 49 1.5 0903-0232 - - 49.5 2.0 - 0910-0327 - XR80R 79-91 47.5 79.7 48 0.5 0903-0229 0910-0324 0912-0114 CW13 0913-0005 - 9.7:1 Compression x 48.5 1.0 - 0910-0325 0912-0115 45 49 1.5 0903-0579 - - 49.5 2.0 - 0910-0327 - CRF100F 04-12, XR100R 92-03 53 99.2 53.5 0.5 0903-0199 0910-0328 0912-0124 CW14 0913-0006 - 9.4:1 Compression x 54 1.0 - 0910-0329 0912-0125 45 54.5 1.5 - - 0912-0126 55 2.0 - 0910-0331 0912-0127 CRF100F 04-13, XR100R 85-03 58 120 58 5.0 - 0910-0752 - CW14 - - 12:1 Compression x 58 mm Big Bore. Cylinder sleeving required for oversizes. 45 XR100R 85-91 53 99.2 53.5 0.5 - 0910-0328 0912-0124 CW14 - - 9.4:1 Compression x 54 1.0 - 0910-0329 0912-0125 45 54.5 1.5 - - 0912-0126 55 2.0 - 0910-0331 0912-0127 CRF125F 14-24 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 - 0910-3947 - ArmorGlide skirt coated. 57.8 CW18 CRF150R 07-09 66 150 66 STD 0903-0688 0910-0819 - - - - 11.7:1 Stock Compression x Skirt coated. 43.7 CRF150R 07-09 66 150 66 STD - 0910-0821 - - - - High-Compression x 159 68 2.0 - - - 66 mm = 12.2:1 CR 43.7 68 mm =12.4:1 CR Skirt coated. XL/XR185 (+ 0.100 Big Bore) 86-91 65.5 192 65.5 STD - 4156M06550 2579XC CW15 S-522 - 10:1 Compression x 66 0.5 0903-0211 4156M06600 2598XC Cylinder boring required for oversizes. 57.8 66.5 1.0 - 4156M06650 2618XC XR/XL185 +0.100 Big Bore 92-02 65.5 192 65.5 STD 0903-0212 4156M06550 2579XC CW15 S-522 - 10:1 Compression x 66 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 0.5 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 - - 11:1 Compression x 66.2 CRF250R 04-07, CRF250X 04-17 78 249 78 STD 0903-0553 0910-0333 0912-0120 CW16 0913-0008 - 12.9:1 Standard Compression x 52.2 CRF250R 04-07, CRF250X 04-17 78 249 78 STD 0903-0551 0910-0756 0912-0120 CW16 0913-0008 - 13.5:1 High-Compression x ArmorGlide skirt coated. 52.2 CRF250R 04-09 78 276 82 4.0 - 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 STD - - 0912-0120 CW16 0913-0008 - 13.1:1 Stock-Compression x ArmorGlide skirt coated. 52.2 CRF250R 08-09 78 249 78 STD - - 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 HIGH-PERFORMANCE PISTONS (CONT)
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