BOLD MAGENTA part numbers are new for 2026 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2026 PISTON & PISTON KITS 1403 HIGH-PERFORMANCE PISTONS continued on next page. 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) CRF250R 14-15 76.8 - 76.8 STD 0903-1137 - - CW16 0913-0008 - 13.5:1 Stock Compression x 53.8 XL250 79-82, XR250 thru 83 74 248 74 STD - - 2913XC - S-376 - 10:1 Compression x 74.5 0.5 - - 2933XC 57.8 75 1.0 - 4171M07500 2953XC 75.5 1.5 - - 2973XC 76 2.0 - - 2992XC XL250R (Radial Head) 84-87, XR250R 84-85 75 250 75.5 0.5 - 4329M07550 - CW17 S-523 x 75 STD - - 2953XG - 56.5 76 1.0 - 4329M07600 2992XG XR250R 86-04 73 250 73 STD 0903-0265 4466M07300 2874XC CW17 S-5232 - 10.5:1 Compression x 73.5 0.5 0903-0216 4466M07350 2894XC Cylinder boring required for oversizes. 59.5 74 1.0 0903-0193 4466M07400 2913XC 75.5 2.5 - 0910-0753 2973XC 77 4.0 0903-0570 - 0912-0118 78 5.0 0903-0571 0910-0755 0912-0119 XR250L 91-96 73 250 73 STD - 4466M07300 2874XC CW17 S-5232 - 10.5:1 Compression; cylinder boring required for oversizes x 73.5 0.5 - 4466M07350 2894XC 59.5 74 1.0 - 4466M07400 2913XC 75.5 2.5 - 0910-0753 2973XC 77 4.0 - - 0912-0118 78 5.0 - 0910-0755 0912-0119 XR350R 1983-84 84 339 84 STD - - 3307XC CW21 S-529 - 10:1 Compression x 84.5 0.5 - - - Radial Head. 61.3 85 1.0 - 4286M08500 3347XC *Will not fit XL models. XR400R 96-04 85 397 85 STD - 4606M08500 3347XC CW20 S-520 - 10:1 Compression x 86 1.0 - 4606M08600 3386XC 70 87 2.0 - 0910-2910 3425XC 88 3.0 - - 3465XC XR400R 96-04 85 397 85 STD - 4628M08500 3347XC CW20 S-520 - 11:1 High-Compression x 86 1.0 - - 3386XC 70 87 2.0 - - 3425XC 88 3.0 - 0910-2915 3465XC XR400R 96-04 89 440 89 4.0 - - - CW20 S-520 - 12.5:1 High-Compression. x 440 Overbore. Cylinder sleeving required. 70 CRF450R 02-03 96 449 96 STD - 4753M09600 0912-0122 - - - 11.5:1 Standard Compression x ArmorGlide skirt coated. 62.1 CRF450R 02-08 96 449 96 STD 0903-0567 0910-0334 0912-0122 - - - 12:1 Compression (std. for 04) x ArmorGlide skirt coated. 62.1 CRF450R 02-08 96 449 96 STD 0903-0552 - 0912-0122 - - - 12.5:1 High-Compression x ArmorGlide skirt coated. 62.1 Cylinder boring and plating required for oversizes. CRF450R 02-08 96 449 96 STD - - 0912-0122 - - - 13:1 High-Compression x ArmorGlide skirt coated. 62.1 CRF450R 02-08 96 449 96 STD - 0910-0758 0912-0122 - - - 13:5 High-Compression. x ArmorGlide skirt coated. 62.1 CRF450R 09-12 96 449 96 STD - 0910-2933 0912-0122 - 0913-0012 - 12:1 Stock Compression x ArmorGlide skirt coated. 62.1 CRF450R 09-12 96 449 96 STD - 0910-2934 0912-0122 - 0913-0012 - 13:1 High-Compression x ArmorGlide skirt coated. 62.1 CRF450X 05-06 96 449 96 STD - 4753M09600 0912-0122 - - - 11.5:1 Compression x ArmorGlide skirt coated. 62.1 CRF450X 05-17 96 449 96 STD 0903-0574 0910-0334 0912-0122 - - - 12:1 Compression x ArmorGlide skirt coated. 62.1 CRF450X 05-17 96 449 96 STD - - 0912-0122 - - - 12.5:1 High-Compression x 62.1 HIGH-PERFORMANCE PISTONS (CONT) 2 Piston pin not included.
RkJQdWJsaXNoZXIy OTcxOTk3