BOLD MAGENTA part numbers are new for 2025 PARTS-UNLIMITED.COM 2025 | OFFROAD PISTON & PISTON KITS PISTON & PISTON KITS 1368 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 4-STROKE (CONT) SR500 87 499 90.0 3.00 - - 3544XC CW20 - - TT500 77-81 x XT500 76-81 84 3 mm Big Bore 11:1 Compression XT600 84-96 95 598 95.0 STD - - 3740XH - - - 10.75:1 Compression x - - - - - - Crankcase clean-up required 84 - - - - - - PART # OD/LENGTH 0913-0005 13 mm/1.53” 0913-0006 14 mm/1.78” 0913-0008 16 mm/1.63” 0913-0012 20 mm/1.986” 0913-0014 12 mm/1.22” S-255 16 mm/1.965” S-256 16 mm/2.050” S-257 18 mm/2.200” S-270 16 mm/1.840” S-277 18 mm/2.580” S-278 18 mm/2.475” PART # OD/LENGTH S-280 18 mm/2.160” S-288 14 mm/1.625” S-376 19 mm/2.500” S-394 14 mm/1.860” S-459 18 mm/1.850” S-467 15 mm/1.614” S-477 18 mm/2.075” S-482 18 mm/1.948” S-484 18 mm/2.291” S-486 16 mm/2.175” S-508 18 mm/2.1062” PART # OD/LENGTH S-512X 20 mm/2.362” S-513 18 mm/2.300” S-514 16 mm/1.750” S-517 14 mm/1.509” S-520 20 mm/2.362” S-522 15 mm/2.200” S-523 17 mm/2.430” S-529 21 mm/2.755” S535 20.10 mm/2.8346” S538 12 mm/1.5354” REPLACEMENT CIRCLIPS DIMENSIONS PART # SIZE CW12 12 mm CW13 13 mm CW14 14 mm CW15 15 mm PART # SIZE CW16 16 mm CW17 17 mm CW18 18 mm CW20 20 mm PART # SIZE CW21 21 mm CW23 23 mm CW24 24 mm PART # DIMENSIONS 0924-0123 19 x 24.8 0924-0124 20 x 25 x 21.8 0924-0125 12 x 16 x 17.8 B1000 12 x 16 x 16 B1001 15 x 19 x 17 B1002 18 x 23 x 24 B1003 18 x 22 x 22 B1004 20 x 25 x 27.8 B1005 16 x 21 x 23 PART # DIMENSIONS B1006 14 x 18 x 17.5 B1008 16 x 21 x 19.5 B1012 14 x 18 x 16 B1013 15 x 19 x 20 B1014 18 x 23 x 22 B1016 16 x 20 x 19.5 B1018 14 x 18 x 20 B1021 16 x 20 x 22.5 B1022X 18 x 22 x 23.6 PART # DIMENSIONS B1023 20 x 25 x 25 B1030 22 x 27 x 24.8 B1031 20 x 25 x 23 B1037 18 x 22 x 19.65 B1038 15 x 20 x 17.8 B1041 12 x 15 x 14.5 B1042 12 x 15 x 16.3 PART # 1614CD 1693CD 1850CS 1850CD 1869CS 1869CD 1890CS 1909CS 1909CD 1929CS 1929CD 1949CS 1949CD 1969CD 1988CD 2008CD 2047CD 2067CD 2087CD 2126CST PART # 2126CD 2126CS 2146CS 2165CD 2185CD 2205CD 2205CS 2224CD 2224CS 2244CS 2264CS 2284CS 2441CD 2461CD 2520CD 2539CD 2559CD 2579CD 2579XC 2598XC PART # 2598CD 2608CD 2614CD 2618CD 2618XC 2628CD 2638CD 2648CD 2652CD 2658CD 2668CD 2677CD 2687CD 2697CD 2717CD 2736CD 2756CD 2776CS 2776CD 2786CD PART # 2795CD 2815CD 2835CD 2854CD 2874CD 2874XC 2894XC 2913XC 2933XC 2953XG 2953XC 2973XC 2973XG 2992XG 2992XC 3071TD 3110XG 3268XG 3307XC 3347XC PART # 3347TD 3386XC 3386TD 3405TD 3425XC 3425TD 3445TD 3465XC 3465TD 3484TD 3504XC 3504TD 3544XC 3544TD 3583TD 3642XC 3740XH 3977XH 0912-0106 0912-0107 PART # 0912-0111 0912-0112 0912-0113 0912-0114 0912-0115 0912-0118 0912-0119 0912-0120 0912-0122 0912-0124 0912-0125 0912-0126 0912-0127 0912-0131 0912-0133 0912-0134 0912-0140 WRIST PINS TOP-END BEARINGS REPLACEMENT RING SETS
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