BOLD MAGENTA part numbers are new for 2024 PARTS-UNLIMITED.COM 2024 | OFFROAD PISTON & PISTON KITS 1340 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 # KTM 4-STROKE (CONT) 450 EXC-F 17-20 95 449 89.0 - - 0910-3927 - - 0913-0012 - 11.8:1 Stock Compression x 63.4 450 SX 03-06, 450 XC 06 95 449 95.0 STD - 0910-0784 0912-0134 CW20 - - 12:1 Compression x Cylinder boring and replating 63.4 required for oversizes 450 SX 03-06, 450 XC 06 95 449 95.0 STD - 0910-0785 0912-0134 CW20 - - 13:1 Compression x 97.0 2.0 - - 0912-0133 Cylinder boring and replating 63.4 required for oversizes 450 XC-F 07-10 97 449 97 STD - 0910-0850 0912-0133 - - - 450 SX-F 07-12 x 12.5:1 Compression.ArmorGlide skirt coated 60.8 450 XC-F 07-10 97 449 97 STD - 0910-0851 0912-0133 - - - 450 SX-F 07-12 x 13.5:1 Compression.ArmorGlide skirt coated 60.8 450 SX-F 13-22 95 449 95.0 STD - - - - 0913-0012 - 12.6:1 Compression 13-17 x 17.75:1 Compression 18-20 63.4 PART #0903-1141 for 13-15 only 450 SX-F 13-22 95 449 95.0 STD - 0910-6542 - - 0913-0012 - 12.75:1 Compression 13-17 x 63.4 450 SX-F 13-22 95 449 95.0 STD 0903-1142 - - - 0913-0012 - 13.5:1 High Compression x PART #0903-1142 for 13-15 only 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 72 505 SX/XC 07-08 100 478 100 STD - - - CW20 - - Skirt Coated x 13.5:1 High-Compression 60.8 520 SX/EXC 00-02 95 510 95.0 STD 0903-1161 0910-0787 0912-0134 CW20 - - 525 SX/EXC 03-07 x 97.0 2.0 - - 0912-0133 11:1 Compression 72 Cylinder boring and replating required for oversizes 520 SX/EXC 00-02 95 510 95.0 STD 0903-1162 0910-0789 0912-0134 CW20 - - 525 SX/EXC 03-07 x 97.0 2.0 - 0910-0790 0912-0133 12.5:1 Compression 72 Cylinder boring and replating required for oversizes SUZUKI 2-STROKE JR50 78-06 41 49 41.0 STD 0903-0926 0910-0339 1614CD CW12 0913-0014 B1000 x 41.5 0.5 - 0910-0340 - 37.8 42.0 1.0 0903-0928 0910-0341 - 43.0 2.0 - 0910-0343 1693CD RM60 03-04 43 60 43.0 STD 0903-0920 648M04300 1693CD CW12 - 0924-0125 *Electrofusion bore - cylinder sleeving x 43.5 0.5 - 648M04350 - or replating required for oversizes 41.6 44.0 1.0 - - - 45.0 2.0 - 0910-0344 - RM65 03-06 44.5 64 44.5 STD 0903-0304 752M04450 - CW12 - 0924-0125 *Electrofusion bore - cylinder sleeving x 45.0 0.5 0903-0538 0910-1235 - or replating required for oversizes 41.6 46.5 2.00 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 Nitrided coated 41.6 ArmorGlide skirt coated Electra Coated RM80 77-81 49 79 49.0 STD - 456M04900 1929CD CW12 S538 B1000 DS80 thru 00 x 49.5 0.5 - 456M04950 1949CD 42 50.0 1.0 - 456M05000 1969CD 50.5 1.5 - - 1988CD 51.0 2.00 - - 2008CD
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