BOLD MAGENTA part numbers are new for 2026 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2026 PISTON & PISTON KITS 1407 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 2-STROKE (CONT) KX80 88-90 48 82 48 STD 0903-0261 644M04800 - CW14 S-517 B1006 Pro-Lite x 48.5 0.5 - 644M04850 1909CD Electrofusion Bore - Cylinder sleeving or replating required for oversizes. 45.8 49 1.0 - 644M04900 - 50 2.0 - - 1969CD KX80 91-97 48 82 48 STD - 644M04800 - CW14 S-517 B1006 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. Pro-Lite. x 48.5 0.5 0903-0243 644M04850 1909CD 45.8 49 1.0 0903-0222 644M04900 - 50 2.0 - - 1969CD KX80 98-00 48 82 48 STD 0903-0289 644M04800 - CW14 S-517 B1006 Pro-Lite x 48.5 0.5 - 644M04850 1909CD *Electrofusion Bore - Cylinder sleeving or 45.8 49 1.0 - 644M04900 - replating required for oversizes 50 2.0 - - 1969CD KX85 01 48.5 84.9 48.5 STD - 782M04850 1909CD CW14 S-517 B1006 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. Pro-Lite. x 49 0.5 - 0910-1237 - 45.8 49.5 1.0 - 0910-1238 - 50.5 2.0 - - 1988CD KX85 01-13 48.5 84.9 48.5 STD 0903-0930 0910-0762 1909CS CW14 S-517 B1006 Racer’s Choice; Single ring. CSA Ring is titanium nitride coated. x 45.8 Electra coated.ArmorGlide skirt coated. Pro-Lite. KX85 02-13 48.5 84.9 48.5 STD 0903-0306 782M04850 1909CD CW14 S-517 B1006 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. Pro-Lite. x 49 0.5 - 0910-1237 - 45.8 49.5 1.0 - 0910-1238 - 50.5 2.0 - - 1988CD KX85 14-24 48.5 84.9 48.5 - 0903-1148 0910-3964 1909CS - S-517 - Electrofusion Bore. x 49 - 0903-1149 - 1929CS Pro-Lite. 45.8 50.5 - 0903-1151 - - All 100s 74-82 49.5 99 49.5 STD - 369M04950 - CW14 S-5172 B1006 KE100 86-01 x 50 0.5 - - 1969CD Cylinder sleeving or replating required for KE100 and KM100 oversizes. 51.8 50.5 1.0 - - 1988CD 51 1.5 - - 2008CD KX100 95-97 52.5 99 52.5 STD - 651M05250 2067CD CW14 S-288 B1006 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 53 0.5 - 651M05300 2087CD 45.8 54.5 2.0 - 0910-0345 - KX100 98-13 52.5 99 52.5 STD 0903-0310 651M05250 2067CD CW14 S-288 B1006 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 53 0.5 0903-0181 651M05300 2087CD 45.8 54.5 2.0 0903-0515 0910-0345 - KX100 14-21 52.5 99 52.5 - 0903-1152 0910-3965 - CW14 S-288 - Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 54.5 - 0903-1154 - 2146CS 45.8 KX125 82-85 56 124 56 STD - 486M05600 2205CD CW16 S-2702 B1008 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 56.5 0.5 - - 2224CD 50.6 57 1.0 - - - KX125 86 56 124 56 STD - 540M05600 2205CD CW16 S-270 B1008 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 56.5 0.5 - - 2224CD 50.6 57 1.0 - - - KX125 87 56 124 56 STD - 555M05600 2205CD CW16 S-514 B1008 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 56.5 0.5 - - 2224CD 50.6 57 1.0 - - - KX125 88-89 56 124 56 STD - 566M05600 2205CD CW16 S-514 B1008 Single ring. x 56.5 0.5 - - 2224CD Electrofusion Bore - Cylinder sleeving or replating required for oversizes. 50.6 57 1.0 - - - Pro-Lite. KX125 89 56 124 56 STD - - 2205CD CW16 S-514 B1008 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 50.6 56.5 0.5 - - 2224CD Pro-Lite. 57 1.0 - - - KX125 90 56 124 56 STD - 589M05600 2205CD CW16 S-514 B1008 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 50.6 56.5 0.5 - - 2224CD Pro-Lite. 57 1.0 - - - KX125 91 56 124 56 STD - - 2205CS CW16 S-514 B1008 Electrofusion Bore - Cylinder sleeving or replating required for oversizes. x 50.6 56.5 57 0.5 1.0 - - - - 2224CS 2244CS Pro-Lite. KX125 92 54 124 54 STD - - 2126CS CW16 S-514 B1008 Pro-Lite. x 54.5 0.5 - - 2146CS Electrofusion Bore - Cylinder sleeving or replating required for oversizes. 54.5 55 1.0 - - - HIGH-PERFORMANCE PISTONS (CONT) 2 Piston pin not included.
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