BOLD MAGENTA part numbers are new for 2024 PARTS-UNLIMITED.COM 2024 | OFFROAD PISTON & PISTON KITS 1330 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) XR250L 91-96 73 250 73.0 STD - 4466M07300 2874XC CW17 S-5233 - 10.5:1 Compression; cylinder boring required for oversizes x 73.5 0.5 - 4466M07350 2894XC 59.5 74.0 1.0 - 4466M07400 2913XC 75.5 2.5 - 0910-0753 2973XC 77.0 4.0 - 0910-0754 0912-0118 78.0 5.0 - 0910-0755 0912-0119 XR350R 1983-84 84 339 84.0 STD - - 3307XC CW21 S-529 - Radial Head x 84.5 0.5 - - - 10:1 Compression 61.3 85.0 1.0 - 4286M08500 3347XC *Will not fit XL models XR400R 96-04 85 397 85.0 STD - 4606M08500 3347XC CW20 S-520 - 10:1 Compression x 86.0 1.0 - 4606M08600 3386XC 70 87.0 2.0 - 0910-2910 3425XC 88.0 3.0 - - 3465XC XR400R 96-04 85 397 85.0 STD - 4628M08500 3347XC CW20 S-520 - 11:1 Hi-Compression x 86.0 1.0 - - 3386XC 70 87.0 2.0 - - 3425XC 88.0 3.0 - 0910-2915 3465XC XR400R 96-04 89 440 89.0 4.0 - 0910-0757 - CW20 S-520 - 440 Overbore x 12.5:1 Hi-Compression. Cylinder sleeving required 70 CRF450R 02-03 96 449 96.0 STD - 4753M09600 0912-0122 - - - 11.5:1 Standard Compression x ArmorGlide skirt coated 62.1 CRF450R 02-08 96 449 96.0 STD 0903-0567 0910-0334 0912-0122 - - - 12:1 Compression (std. for 04) x ArmorGlide skirt coated 62.1 CRF450R 02-08 96 449 96.0 STD 0903-0552 4755M09600 0912-0122 - - - 12.5:1 Hi-Compression. x ArmorGlide skirt coated. 62.1 Cylinder boring and plating required for oversizes CRF450R 02-08 96 449 96.0 STD 0903-0557 0910-0335 0912-0122 - - - 13:1 Hi-Compression. x ArmorGlide skirt coated 62.1 CRF450R 02-08 96 449 96.0 STD 0903-0572 0910-0758 0912-0122 - - - 13:5 Hi-Compression. x ArmorGlide skirt coated 62.1 CRF450R 02-08 101 496 101.0 5.00 - - - - - - CRF450X 05-17 x 500cc Big Bore 62.1 12.5:1 Compression ArmorGlide skirt coated CRF450R 09-12 96 449 96.0 STD - 0910-2933 0912-0122 - 0913-0012 - 12:1 Stock Compression x ArmorGlide skirt coated 62.1 CRF450R 09-12 96 449 96.0 STD - 0910-2934 0912-0122 - 0913-0012 - 13:1 High-Compression x ArmorGlide skirt coated 62.1 CRF450X 05-06 96 449 96.0 STD - 4753M09600 0912-0122 - - - 11.5:1 Compression x ArmorGlide skirt coated 62.1 CRF450X 05-17 96 449 96.0 STD 0903-0574 0910-0334 0912-0122 - - - 12:1 Compression x ArmorGlide skirt coated 62.1 CRF450X 05-17 96 449 96.0 STD - 4755M09600 0912-0122 - - - 12.5:1 Hi-Compression x 62.1 CRF450X 05-17 96 449 96.0 STD - 0910-0335 0912-0122 - - - 13:1 Hi-Compression x ArmorGlide skirt coated 62.1 CRF450X 05-17 96 449 96.0 STD - 0910-0758 0912-0122 - - - 13:5 Hi-Compression. x ArmorGlide skirt coated 62.1 XR500, XR500R 79-82 89 497 89.0 STD - 4117M08900 3504XC CW21 - - XL500S/R 79-82 x 89.5 0.5 - 4117M08950 - FT500 82-84 80 90.0 1.0 - 4117M09000 3544XC 10.5:1 Compression 3 Piston pin not included.
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