BOLD MAGENTA part numbers are new for 2025 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2025 PISTON & PISTON KITS 1357 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 # KTM 2-STROKE (CONT) 250 SX 03-24, XC/XC-W/EXC/EXC TPI 06-24 66.4 249 66.40 STD - 0910-0778 2614CD CW18 S-508 B1037 Freeride 250R 14-17 x Pro-Lite 72 Double Ring 300 91-94 72 297 72.0 STD - 631M07200 2835CD CW18 S-477 B1037 Pro-Lite x 72.5 0.5 - - 2854CD *Nikasil Bore - Cylinder sleeving or 73 replating required for oversizes 300 96-03 72 297 72.0 STD - 712M07200 2835CD CW18 S-477 B1037 Pro-Lite x 73.0 1.0 - - 2874CD *Nikasil Bore - Cylinder sleeving or 73 replating required for oversizes 300 EXC/MXC 04 72 297 72.0 STD - 0910-0779 2835CD CW18 S-477 - Pro-Lite x Double Ring 73 300 EXC/MXC 05, 300 XC/XC-W 06-07 72 297 72.0 STD 0903-0534 0910-0779 2835CD CW18 S-477 - Pro-Lite x Double Ring 73 300 EXC/XC-W 08-16 72 297 72.0 STD 0903-1164 0910-0779 2835CD CW18 S-477 - Pro-Lite x Double Ring 73 360 SX 96-97 78 353 78 STD - 0910-1694 3071TD CW18 - B1037 Pro-Lite x *Nikasil Bore 74 380 SX/EXC 98-02 78 368 78.0 STD - 748M07800 3071TD CW18 - B1037 Pro-Lite x 79.0 1.0 - 748M07900 - *Nikasil Bore - Cylinder sleeving or 77 replating required for oversizes KTM 4-STROKE 250 SX-F 06-12, 76 249.5 76 STD - 0910-0846 - - - - 250 XC-F/XCF-W 07-13 x ArmorGlide skirt coated 55 12.8:1 Std. Compression 250 SX-F 06-12, 76 249.5 76 STD - 0910-0848 - - - - 250 XC-F/X CF-W 07-13 x ArmorGlide skirt coated 55 13:1 High-Compression 250 SX-F/XCF 13-15, 78 250 78.0 STD - 0910-3166 - - - - 250 EXC-F 14-16, XCF-W 13-16 x 13.9:1 compression 250 SX-F/XC-F 52.3 OE compression 250 EXC-F/X CF-W 250 EXC-F 17-22 78 250 78.0 STD - 0910-3166 - - - - 14.4:1 compression x 52.3 350 EXC-F 12-16, 350 XC-F/XCF-W, 12-15, 88 350 88 STD - 0910-2897 - CW18 - - Freeride 12-17 x 12.3:1 Stock Compression 57.5 ArmorGlide skirt coated 350 EXC-F 12-16, 350 XC-F/XCF-W, 12-15, 88 350 88 STD 0903-1140 - - CW18 - - Freeride 12-17 x 13:1 High-Compression 57.5 350 EXC-F 20-24 88 350 88.0 STD - - - CW18 - - 13.5:1 compression x ArmorGlide skirt coated 57.5 350 SX-F/XC-F 11-15 88 350 88 STD - 0910-2894 - CW18 - - 14.5:1 High-Compression x 57.5 350 SX-F/XC-F 11-22 88 350 88.0 STD - - - CW18 - - 13.5:1 compression 11-15 x 14:1 compression 16-22 57.5 ArmorGlide skirt coated 400 SX 00-02 89 398 89.0 STD - - 0912-0131 CW20 - - 400 EXC 00-02 x 12:1 Compression.ArmorGlide 64 skirt coated. Cylinder boring and replating required for oversizes 450 EXC Racing/XC-W/MXC 03-07 89 448 89.0 STD 0903-0690 - - CW20 - - ArmorGlide skirt coated. x 11:1 compression. Cylinder 72 boring and replating required for oversizes
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