BOLD MAGENTA part numbers are new for 2024 PARTS-UNLIMITED.COM 2024 | OFFROAD PISTON & PISTON KITS 1346 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 # YAMAHA 2-STROKE (CONT) YZ125 93 56 124 56.0 STD - 629M05600 2205CS CW16 S-514 B1016 Pro-Lite x 56.5 0.5 - - 2224CS *Ceramic Composite - Cylinder sleeving or 50.7 57.0 1.0 - 629M05700 2244CS replating required for oversizes YZ125 94-96 54 124 54.0 STD - 647M05400 2126CS CW16 S-514 B1016 Pro-Lite x 54.5 0.5 - 647M05450 2146CS *Ceramic Composite - Cylinder sleeving or 54.5 55.0 1.0 - - - replating required for oversizes 56.0 2.0 - 0910-1224 2205CS YZ125 97 54 124 54.0 STD - 693M05400 2126CS CW15 S-467 B1038 Pro-Lite x *Ceramic Composite - Cylinder sleeving or 54.5 replating required for oversizes YZ125 97-04 54 125 54.0 STD - 0910-0729 2126CS CW15 - - Racer’s Choice Flat x 134 56.0 2.0 - 0910-0730 2205CS Top Conversion. No 54.5 intake window. Flat Top Conversion Electra Coated YZ125 98-00 54 124 54.0 STD 0903-0309 726M05400 2126CST CW15 S-467 B1038 Pro-Lite x 54.5 0.5 0903-0291 726M05450 2146CS *Ceramic Composite - Cylinder sleeving or 54.5 55.0 1.0 - 726M05500 - replating required for oversizes 56.0 2.0 0903-0215 726M05600 2205CS YZ125 01 54 124 54.0 STD 0903-0288 726M05400 2126CST CW15 S-467 B1001 Pro-Lite x 54.5 0.5 - 726M05450 2146CS *Ceramic Composite - Cylinder sleeving or 54.5 55.0 1.0 0903-0228 726M05500 - replating required for oversizes 56.0 2.0 0903-0176 726M05600 2205CS YZ125 02 54 125 54.0 STD 0903-0297 797M05400 2126CST CW15 S-467 B1001 Pro-Lite x 54.5 0.50 - 0910-1240 2146CS 54.5 55.0 1.0 - - - 56.0 2.0 0903-0207 797M05600 2205CS YZ125 03-04 54 125 54.0 STD 0903-0283 797M05400 2126CST CW15 S-467 B1001 Pro-Lite x 54.5 0.5 - 0910-1240 2146CS 54.5 55.0 1.0 - - - 56.0 2.0 0903-0250 797M05600 2205CS YZ125 97-04 54 125 54.0 STD - 765M05400 2126CS CW15 - B10385 GP Style – Electra Coated x 134 56.0 2.0 - 765M05600 2205CS - - B10016 No intake window; pinned on 54.5 centerline; longer skirt than stock YZ125 05-21 54 125 54.0 STD 0903-0724 0910-0571 2126CS CW15 - B1001 YZ125X 20-22 x 134 56.0 2.0 0903-1160 0910-0572 2205CS Pro-Lite 54.5 YZ125 05-21,YZ125X 20-22 54 125 54.0 STD 0903-0513 0910-0799 2126CS CW15 - B1001 Racer’s Choice GP Style x 134 56.0 2.0 0903-0681 0910-0800 2205CS Electra Coated; CSA Ring is 54.5 144 58.0 4.0 0903-0682 0910-1255 2284CS Titanium Nitride coated; ArmorGlide skirt coated *Crankcase clearance required for 57mm and larger bore diameter YZ125 22-24 54 124 54.0 STD - 0910-6456 2126CS CW15 - - YZ125X 23-24 x 134 56.0 2.0 - 0910-6457 2205CS Pro-Lite 54.5 - YZ125 22-24 54 124 54.0 STD - 0910-6458 2126CS CW15 - - YZ125X 23-24 x Racer’s Choice GP Style 54.5 CT-2 175 thru 77 66 172 66.0 STD - 471M06600 2598CD CW16 - B1021 CT-3 175 thru 77 x 66.5 0.5 - 471M06650 2618CD DT175 79-81 50 67.0 1.0 - 471M06700 2638CD MX175 79-82 67.5 1.5 - - 2658CD YZ175 76-81 66 172 66.0 STD - - 2598CD CW16 - B1021 IT175 76-81 x 66.5 0.5 - 374M06650 2618CD 50 67.0 1.0 - 374M06700 2638CD 67.5 1.5 - - 2658CD 68.0 2.0 - - 2677CD RT180 90-98 64.5 176 64.5 STD - 0910-2875 2539CD CW16 S-486 - x 0.5 - 0910-2876 2559CD 54 1.0 - 0910-2877 2579CD IT200 84-86 66 195 66.0 STD - 522M06600 2598CD CW16 - B1005 x 66.5 0.5 - - 2618CD 57 67.0 1.0 - 522M06700 2638CD 67.5 1.5 - - 2658CD 68.0 2.0 - - 2677CD 5 For 97-00 models. 6 For 01-04 models.
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