BOLD MAGENTA part numbers are new for 2026 ENGINE & COOLING PARTS-UNLIMITED.COM WATERCRAFT | 2026 ENGINE & COOLING 115 HIGH-PERFORMANCE 2- AND 4-CYCLE PWC PISTONS (CONT) CC DISPL. BORE SIZE COMPLETE KIT PISTON PART # REPL. RING SET PART # REPL.WRIST PIN PART # REPL. CIRCLIP PART # REPL.TOP END BEARING POLARIS (CONT) 900 ALL THREE CYLINDER MODELS 901cc 75 mm/0.5 mm - - - S-512X CW20 0924-0124 1050 ALL THREE CYLINDER MODELS 1077cc 82 mm/1.0 mm - - - S-512X CW20 0924-0124 SEA-DOO (BOMBARDIER) 650 ALL TWIN CYLINDER MODELS 658cc 78.5 mm/0.5 mm - - - S-512X CW20 0924-0124 XP/XH750 718cc 95; SPX, GTi, HX 96 726cc 82.5 mm/0.5 mm - - - S-512X CW20 - 718 ALL TWIN CYLINDER MODELS 718cc 82 mm/std. - - - S-512X CW20 - 780 ALL TWIN CYLINDER MODELS 780cc 82 mm/std. - - - S-461 CW20 - 900 ALL 900 H.O.ACE MODELS 17-24 899cc 73.94 mm/std - 0910-6948 - - - - 951 ALL TWIN CYLINDER MODELS 98-07 960cc 88.5 mm/0.5 mm - - - - CW21 - 971cc 89 mm/1.0 mm - 716M08900 - - CW21 - RXP 215, EXP-X 225, RXT 255/260,TXT-X 255/260 05-15 1509cc 100.5 mm/0.5 mm - - - - - B1031 GTX300/LIMITED, RXP/X/APEX 300, RXT-X 300 16-25 1630cc 99.91 mm/std. - 0910-6947 - - - - WET JET 440 CAYUNA ENGINE THROUGH 88 429cc 67.5 mm/std. - - 2658CD - CW16 - 433cc 67.75 mm/0.25 mm - - 2668CD - CW16 - 436cc 68 mm/1.0 mm - - 2677CD - CW16 - 442cc 68.5 mm/1.5 mm - - 2697CD - CW16 - 449cc 69 mm/2.0 mm - - 2717CD - CW16 - YAMAHA 500 ALL TWIN CYLINDER MODELS 496cc 72 mm/std. - - 2835CD - CW20 - 503cc 72.5 mm/0.5 mm - - 2854CD - CW20 - 650 ALL TWIN CYLINDER MODELS 649cc 78 mm/1.0 mm - - 3071TD S-423 CW20 B1023 760 ALL TWIN CYLINDER MODELS 771cc 85 mm/1.0 mm - 757M08500 - - CW20 B1031 1100 ALL THREE CYLINDER MODELS 1077cc 82 mm/1.0 mm - - - - CW20 B1031 GP1200 97-99/XL1200 98/SUV1200 (ALL) 1142cc 84.5 mm/0.5 mm WK1313 - - - CW20 B1031 1156cc 85 mm/1.0 mm - 757M08500 - - CW20 B1031 FA/FB/FX/GP1800 WAVERUNNER/ (ALL) 15-22 1800cc 86 mm/std - 0910-6949 - - - - PART # OD/LENGTH S-477 18 mm/2.0748” S-423 20 mm/2.158” PART # OD/LENGTH S-461 20 mm/2.559” S-512X 20 mm/2.362” WRIST PINS • Wiseco wrist pins are strong, lightweight and can be used with OEM pistons CW PIN SIZE CW16 16 mm CW18 18 mm CW PIN SIZE CW20 20 mm CW21 21 mm CIRCLIPS • Two high-strength, easy-to-install circlips are furnished with every piston •Order additional inventory from the chart below PART # DIAMETER (MM) 2559CD 65 2579CD 65.5 2598CD 66 2618CD 66.5 2638CD 67 2658CD 67.5 2668CD 67.75 PART # DIAMETER (MM) 2677CD 68 2687CD 68.25 2697CD 68.5 2717CD 69 2746CD 69.75 2786CD 70.75 2815CD 71.5 PART # DIAMETER (MM) 2835CD 72 2854CD 72.5 2874CD 73 2894CD 73.5 3071TD 78 3169TD 80.5 3228TD 82 REPLACEMENT RING SETS •Each ring set is for one piston •See Wiseco ring buyer’s guide for details NOTE: Wiseco rings fit only Wiseco pistons. PART # DIMENSIONS (MM) B1021 16 x 20 x 22.5 B1003 18 x 22 x 22 B1022X 18 x 22 x 23.6 B1014 18 x 23 x 22 0924-0124 20 x 25 x 21.8 B1023 20 x 25 x 25 B1031 20 x 25 x 23 B1030 22 x 27 x 24.8 TOP-END BEARINGS
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