BOLD MAGENTA part numbers are new for 2026 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2026 PISTON & PISTON KITS 1411 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/COBRA/ACTION/LEM W/ MORINI ENGINE KTM, LEM 87-99, Cobra/Cobra Action 87-99 39 50 39 STD - 0910-1692 - CW12 0913-0014 - 50cc, Reed. x Pro-Lite. 41.7 *Will not fit King Cobra model. KTM 2-STROKE 50 SX LC 01-08, 50 Mini Adventure 02-08 39.5 49 39.5 STD - 803M03950 - CW12 0913-0014 B1041 Nikasil Bore - Cylinder sleeving or replating required for oversizes. x 40 41.5 2.0 - 803M04150 - Pro-Lite. 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 STD 0903-0701 746M04500 - CW12 - B1042 Nikasil Bore - Cylinder sleeving or replating required for oversizes. x 40 47 2.0 - - 1850CS Pro-Lite. 65 SX/XC 09-24 45 65 45 STD 0903-1127 0910-2880 - CW12 - B1042 Nikasil Bore - Cylinder sleeving or replating required for oversizes. x 40.8 47 2.0 - 0910-2881 1850CS Pro-Lite. 85 SX/XC 03-12 47 85 47 STD 0903-0924 0903-0586 1850CS CW14 S-517 B1012 ArmorGlide skirt coated. x 48.95 85 SX/XC 13-24 47 85 47 STD - 0903-0586 1850CS CW14 S-517 B1012 ArmorGlide skirt coated. x 104 52 5.0 - 0903-0587 - *Note: Must use 105cc cylinder for 52 mm. 48.95 105 SX 04-11 52 104 52 STD 0903-0925 0903-0587 - CW14 S-517 B1012 ArmorGlide skirt coated. x 48.95 125 EXC 09-16, 125 SX 02-24, 125 XC-W 17 54 124 54 STD - 0910-2882 2126CD CW15 S-467 B1013 GP Series Racer’s Choice; 2-Ring Version. x ArmorGlide skirt coated. 54 Electra coated. 125 SX 98-00 54.25 125 54.25 STD - 740M05425 - CW15 S-467 B1013 Nikasil Bore - Cylinder sleeving or replating required for oversizes. x 54 56.25 2.0 - - - Pro-Lite. 125 SX 01 54 124 54 STD - 786M05400 2126CS CW15 S-467 B1013 Nikasil Bore - Cylinder sleeving or replating required for oversizes. x 54 56 2.0 - 786M05600 2205CS Pro-Lite. 125 SX 01 54 125 54 STD - - 2126CS CW15 - - Racer’s Choice GP Style. x 56 2.0 - 0910-0290 2205CS Electra coated. 54 58 4.0 - 0910-1696 2284CS Nikasil Bore - Cylinder sleeving or replating required for oversizes. No intake window Pinned on centerline. *Crankcase clearance required for 57 mm and larger bore diameter. 125 SX 02-06 54 124 54 STD 0903-0699 786M05400 2126CS CW15 S-467 B1013 ArmorGlide skirt coated. x 56 2.0 - 786M05600 2205CS Nikasil Bore - Cylinder sleeving or replating required for oversizes. 54 Pro-Lite. 125 SX 02-24, 125 EXC 09-16, 125 XC-W 17 54 124 54 STD - 786M05400 2126CS CW15 - B1013 Nikasil Bore - Cylinder sleeving or replating required for oversizes. x 54 56 2.0 - 786M05600 2205CS Pro-Lite. 144 SX 08, 150 SX 09-15 56 144 56 STD - 0910-2883 2205CS CW15 - - ArmorGlide skirt coated. x 58.5 150 XC-W 20-22 58 150 58 STD - 0910-6931 - - - - x 57.94 200 EXC/MXC 98-02 64 193 64 STD 0903-0512 0910-0773 2520CD CW16 S-486 - Nikasil Bore - Cylinder sleeving or replating required for oversizes. x 66 2.0 - 0910-0776 2598CD Pro-Lite. 60 200 EXC/XC/XC-W 03-16 64 193 64 STD 0903-0530 0910-0773 2520CD CW16 S-486 - Nikasil Bore - Cylinder sleeving or replating required for oversizes. Pro-Lite. x 64.5 0.5 - - 2539CD 60 65 1.0 - - 2559CD 66 2.0 - 0910-0776 2598CD HIGH-PERFORMANCE PISTONS (CONT)
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