BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | OFFROAD PISTON & PISTON KITS PISTON & PISTON KITS 1414 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 # KTM 4-STROKE (CONT) 450 SX-F 13-22 95 449 95 STD - - - - 0913-0012 - 12.6:1 Compression 13-17 x 12.75:1 Compression 18-20 63.4 *PART #0903-1141 for 13-15 only. 450 SX-F 13-22 95 449 95 STD - 0910-6542 - - 0913-0012 - 12.75:1 Compression 13-17 x 63.4 450 SX-F 13-22 95 449 95 STD 0903-1142 0910-6930 - - 0913-0012 - 13.5:1 High-Compression x *PART #0903-1142 for 13-15 only. 63.4 450 SX-F 23-25 95 450 95 STD 0910-6921 - - - - - 13.1:1 Compression x ArmorGlide skirt coated. 63.4 500 EXC 12-19, XC-W 12-16 95 510 95 STD - 0910-2898 - - - - 11.8:1 Stock Compression x ArmorGlide skirt coated. 72 500 EXC 12-19, 500 XC-W 12-16 95 510 95 STD - 0910-3919 - - - - 11.8:1 Stock Compression x 72 500 EXC-F 20-24 95 450 95 STD - 0910-6927 - - - - 12.75:1 Stock Compression x 72 505 SX/XC 07-08 100 478 100 STD - - - CW20 - - 13.5:1 High-Compression x Skirt Coated. 60.8 520 EXC/SX 00-02, 525 EXC/SX 03-07 95 510 95 STD 0903-1161 0910-0787 0912-0134 CW20 - - 11:1 Compression x 97 2.0 - - 0912-0133 Cylinder boring and replating r equired for oversizes. 72 520 EXC/SX 00-02, 525 EXC/SX 03-07 95 510 95 STD 0903-1162 0910-0789 0912-0134 CW20 - - 12.5:1 Compression x 97 2.0 - 0910-0790 0912-0133 Cylinder boring and replating required for oversizes. 72 SUZUKI 2-STROKE JR50 78-06 41 49 41 STD 0903-0926 0910-0339 1614CD CW12 0913-0014 B1000 x 41.5 0.5 - 0910-0340 - 37.8 42 1.0 - 0910-0341 - 43 2.0 - 0910-0343 1693CD RM60 03-04 43 60 43 STD 0903-0920 648M04300 1693CD CW12 - 0924-0125 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 43.5 0.5 - 648M04350 - 41.6 44 1.0 - - - 45 2.0 - 0910-0344 - RM65 03-06 44.5 64 44.5 STD 0903-0304 752M04450 - CW12 - 0924-0125 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 45 0.5 - - - 41.6 46.5 2.0 0903-0514 752M04650 - RM65 03-06 44.5 64 44.5 STD - 0910-0761 - CW12 - - Racer’s Choice; Single ring. x CSA Ring is Titanium Nitride coated. 41.6 Electra Coated.ArmorGlide skirt coated. RM80 77-81, DS80 thru 00 49 79 49 STD - 456M04900 - CW12 S538 B1000 x 49.5 0.5 - 456M04950 - 42 50 1.0 - 456M05000 1969CD 50.5 1.5 - - 1988CD 51 2.0 - - 2008CD RM80 83-85 49 82.87 49 STD - - - CW14 S-288 B1012 x 49.5 0.5 - - - 44 50 1.0 - 497M05000 1969CD 50.5 1.5 - - 1988CD 51 2.0 - - 2008CD RM80 86-87 47.5 82 47.5 STD - - 1869CS CW14 S-288 B1012 x 49 1.5 - 542M04900 1929CS 46.8 49.5 2.0 - 542M04950 1949CS RM80 88 47.5 82 47.5 STD - - 1869CS CW14 S-288 B1012 x 46.8 RM80 89-90 47.5 82 47.5 STD - - 1869CS CW14 S-288 B1012 *Limited to available stock. x 48 0.5 - - 1890CS 46.8 48.5 1.0 - 579M04850 1909CS HIGH-PERFORMANCE PISTONS (CONT)
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