BOLD MAGENTA part numbers are new for 2025 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2025 PISTON & PISTON KITS 1355 HIGH-PERFORMANCE PISTONS (CONT) 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 # KAWASAKI 4-STROKE (CONT) KLX400 03-04 (all) 94.5 440 94.5 4.50 - - - CW20 - - 440cc Big Bore Piston x 12.5:1 Compression 62.6 ArmorGlide skirt coated *Nikasil Bore - Cylinder sleeving or big bore cylinder required KLX450R 08-09 96 449 96.0 STD - 0910-0769 0912-0122 - 0913-0012 - 12:1 Compression x Cylinder boring and replating required for 62.1 oversizes.ArmorGlide skirt coated KLX450R 08-09 96 449 96.0 STD - - 0912-0122 - 0913-0012 - 13:1 Compression x Cylinder boring and replating required for 62.1 oversizes.ArmorGlide skirt coated KX450F 06-08 96 449 96.0 STD 0903-0575 0910-0769 0912-0122 - 0913-0012 - 12:1 Compression x Cylinder boring and replating required for 62.1 oversizes.ArmorGlide skirt coated KX450F 06-08 96 449 96.0 STD 0903-0576 - 0912-0122 - 0913-0012 - 13:1 Compression x Cylinder boring and replating 62.1 required for oversizes.ArmorGlide skirt coated KX450F 09-12 96 449 96.0 STD 0903-0936 0910-2935 0912-0122 - 0913-0012 - 12.5:1 Stock Compression x ArmorGlide skirt coated 62.1 KX450F 09-12 96 449 96.0 STD 0903-0935 - 0912-0122 - 0913-0012 - 13.5:1 High-Compression x ArmorGlide skirt coated 62.1 KX450F 13-14/16-18 96 449 96 STD - 0910-3172 0912-0122 - 0913-0012 - 12.5:1 Stock Compression x 62.1 KX450F 15 96.03 449 96.03 STD - 0910-3942 0912-0122 - 0913-0012 - 13.5:1 High-Compression x ArmorGlide skirt coated 62.3 KLX650C 93-95 100 - 100.0 STD - 0910-3949 - - - - KLX650R 96-01 x 100.5 - - - 9.5:1 Stock Compression 82 KTM/COBRA/ACTION/LEM W/ MORINI ENGINE KTM, LEM 87-99 39 50 39 STD - 0910-1692 - CW12 0913-0014 - Cobra, Cobra Action 87-99 x 50cc, Reed 41.7 Pro-Lite *Will not fit King Cobra model KTM 2-STROKE 50 SX LC 01-08 39.5 49 39.5 STD - 803M03950 - CW12 0913-0014 B1041 50 Mini Adventure 02-08 x 41.5 2.0 - 803M04150 - Pro-Lite 40 *Nikasil Bore - Cylinder sleeving or replating required for oversizes 50 SX 09-24 39.5 49 39.5 STD - 0910-3963 - CW12 0913-0014 - x 40 65 SX/XC 99-08 45 63.58 45.0 STD 0903-0701 746M04500 - CW12 - B1042 Pro-Lite x 47.0 2.0 0903-0702 - 1850CS *Nikasil Bore - Cylinder sleeving or replating required for oversizes 40 65 SX/XC 09-24 45 65 45.0 STD 0903-1127 0910-2880 - CW12 - B1042 *Nikasil Bore - Cylinder sleeving x 47.0 2.0 - 0910-2881 1850CS or replating required for oversizes 40.8 Pro-Lite 85 SX/XC 03-12 47 85 47.00 STD 0903-0924 0903-0586 1850CS CW14 S-517 B1012 ArmorGlide skirt coated x 48.95 85 SX/XC 13-24 47 85 47.00 STD - 0903-0586 1850CS CW14 S-517 B1012 *Note: Must use 105cc cylinder for 52 mm x 104 52.00 5.0 - 0903-0587 - ArmorGlide skirt coated 48.95 105 SX 04-11 52 104 52.00 STD 0903-0925 0903-0587 - CW14 S-517 B1012 ArmorGlide skirt coated x 48.95
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