BOLD MAGENTA part numbers are new for 2023 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2023 CYLINDERS AND CYLINDER KITS (CONT) FITS MODEL DESCRIPTION COMPRESSION RATIO BORE (MM) PART # SUG. RETAIL KTM (CONT) 350 EXC-F/ XCF-W 20-21 Standard Bore kit 14.0:1 90 0931-0967 $699.95 350 SX-F/XC-F 11-12 Standard Bore cylinder (only) - 88 0931-0403 399.95 Standard Bore kit 13.5:1 88 0931-0406 659.95 +2mm Big Bore, 365cc kit 13.5:1 90 0931-0410 719.95 Big Bore gasket kit - - 0934-2369 109.95 350 SX-F/XC-F 13-15 Standard Bore kit (uses Vertex #23831) 13.6:1 88 0931-0497 659.95 +2mm Big Bore, 365cc kit (uses Vertex #23236) 13.5:1 - 0931-0495 719.95 350 SX-F/XC-F 16-18 Standard Bore cylinder (only) - 88 0931-0720 399.95 Standard Bore kit (uses Vertex #24098) 14.0:1 88 0931-0721 679.95 Standard Bore high-compression kit 15.1:1 88 0931-0722 699.95 +2mm Big Bore kit 14.0:1 90 0931-0723 699.95 +2mm Big Bore gasket kit - - 0934-6006 109.95 350 SX-F/XC-F 19-21 Standard Bore kit 14.0:1 90 0931-0967 699.95 SUZUKI RM-Z250 04-06 Standard Bore cylinder (only) - 77 0931-0130 311.03 Standard Bore kit 12.6:1 77 0931-0275 522.18 +3mm Big Bore, 269cc 12.6:1 80 0931-0120 578.92 Big Bore gasket kit - - 0934-1525 74.12 RM-Z250 07-09 Standard Bore cylinder (only) - 77 0931-0401 349.95 Standard Bore kit 13.4:1 77 0931-0352 535.65 RM-Z250 10-12 Standard Bore cylinder (only) - 77 0931-0402 339.95 Standard Bore kit 13.4:1 77 0931-0343 535.65 +3mm Big Bore, 269cc kit - - 0931-0351 597.47 Big Bore gasket kit - - 0934-2151 51.28 RM-Z250 13-15 Standard Bore cylinder (only) - 77 0931-0402 339.95 Standard Bore kit (uses Vertex #23861) 13.5:1 77 0931-0502 535.65 +3mm Big Bore, 269cc kit 13.5:1 80 0931-0501 585.75 Big Bore gasket kit - - 0934-2151 51.28 RM-Z250 16-18 Standard Bore cylinder (only) - 77 0931-0402 339.95 Standard Bore kit (uses Vertex #24122) 13.75:1 77 0931-0675 535.65 Standard Bore high-compression kit - 77 0931-0708 556.26 +3mm Big Bore, 269cc kit 13.5:1 80 0931-0501 585.75 Big Bore gasket kit - - 0934-2151 51.28 DR-Z400 00-20 Standard Bore cylinder (only) - 90 0931-0139 334.25 Standard Bore kit 11.3:1 90 0931-0283 533.23 +4mm Big Bore, 434cc kit 11.3:1 94 0931-0135 613.73 Big Bore gasket kit - - 0934-1527 83.78 YAMAHA YZ85 02-14 +5mm Big Bore, 103.5cc (must modify cyl. head) kit 8.2:1 52.5 0931-0346 699.95 Big Bore gasket kit - - 0934-2154 79.95 YZ250 99-22 Standard Bore kit 66.4 0931-0587 639.95 WR250F 01-04 Standard Bore cylinder (only) - 77 0931-0131 302.54 Standard Bore kit 12.7:1 77 0931-0278 569.95 Standard Bore high-compression kit 13.5:1 77 0931-0296 569.95 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 612.16 Big Bore gasket kit - - 0934-1523 68.95 WR250F 05-13 Standard Bore cylinder (only) - 77 0931-0131 302.54 Standard Bore kit 12.5:1 77 0931-0279 549.95 Standard Bore high-compression kit 13.5:1 77 0931-0296 569.95 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 612.16 Big Bore gasket kit - - 0934-1523 68.95 WR250F 15-17 Standard Bore cylinder (only) - - 0931-0579 329.95 Standard Bore kit 13.5:1 77 0931-0588 569.95 +3mm Big Bore, 269cc kit 13.5:1 77 0931-0591 609.95 Big Bore gasket kit - - 0934-4052 92.95 FITS MODEL DESCRIPTION COMPRESSION RATIO BORE (MM) PART # SUG. RETAIL YAMAHA (CONT) WR250F 18-19 Standard Bore cylinder (only) - - 0931-0579 $329.95 Standard Bore kit 13.5:1 77 0931-0676 569.95 Standard Bore high-compression kit 14.2:1 77 0931-0709 569.95 +3mm Big Bore, 269cc kit 13.5:1 77 0931-0591 609.95 Big Bore gasket kit - - 0934-4052 92.95 WR250F 20-21 +3mm Big Bore, 270cc kit 13.8:1 80 0931-1021 599.95 YZ250 99-17 Big Bore gasket kit - - 0934-4757 92.95 YZ250F 01-04 Standard Bore cylinder (only) - 77 0931-0131 302.54 Standard Bore kit 12.7:1 77 0931-0278 569.95 Standard Bore high-compression kit 13.5:1 77 0931-0296 569.95 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 612.16 Big Bore gasket kit - - 0934-1523 68.95 YZ250F 05-07 Standard Bore cylinder (only) - 77 0931-0131 302.54 Standard Bore kit - 0931-0279 549.95 Standard Bore high-compression kit 13.5:1 77 0931-0296 569.95 +3mm Big Bore, 269cc kit 12.5:1 80 0931-0121 612.16 Big Bore gasket kit - - 0934-1523 68.95 YZ250F 08-13 Standard Bore cylinder (only) - - 0931-0131 302.54 Standard Bore cylinder kit 13.5:1 77 0931-0281 569.95 +3mm Big Bore, 269cc kit - - 0931-0121 612.16 Big Bore gasket kit - - 0934-1523 68.95 YZ250F 14-18, YZ250FX 15-19 Standard Bore cylinder (only) 13.5:1 77 0931-0579 329.95 Standard Bore cylinder kit 13.5:1 77 0931-0588 569.95 Big Bore cylinder kit 13.5:1 80 0931-0591 609.95 Big Bore gasket kit - - 0934-4052 92.95 YZ250F 19-22, YZ250FX 20-21 +3mm Big Bore, 270cc kit 13.8:1 80 0931-1021 599.95 WR450F 03-06 +3mm Big Bore, 478cc (uses Vertex #23404) kit - - 0931-0426 639.95 478cc Top-End gasket kit - - 0934-2387 81.95 YZ450F 03-05 Standard Bore cylinder (only) - 95 0931-0132 311.62 Standard Bore kit 12.5:1 95 0931-0280 569.95 +3mm Big Bore, 478cc (uses Vertex #23404) kit - - 0931-0426 639.95 478cc Top End gasket kit - - 0934-2387 81.95 YZ450F 06-09, WR450F 07-15 Standard Bore cylinder (only) - 95 0931-0164 288.95 Standard Bore kit 12.5:1 95 0931-0282 569.95 Standard Bore high-compression kit 13.5:1 95 0931-0299 599.95 +3mm Big Bore, 478cc kit 12.5:1 98 0931-0174 639.95 +3mm Big bore gasket kit - - 0934-1699 81.95 YZ450F 10-13 Standard Bore cylinder (only) - 97 0931-0396 349.95 Standard Bore kit 13.5:1 97 0931-0345 569.95 +2mm Big Bore, 468cc kit 12.5:1 - 0931-0354 659.95 YZ450F 14-17, YZ450FX 16-18 Standard Bore cylinder (only) - 97 0931-0396 349.95 Standard Bore kit 12.5:1 97 0931-0585 599.95 Big Bore cylinder kit 12.5:1 99 0931-0590 659.95 Big Bore gasket kit - - 0934-4051 86.95 YZ450F 18-19, WR450F 19-20 Standard Bore cylinder (only) - 97 0931-0848 349.95 Standard Bore kit 12.8:1 97 0931-0849 599.95 Standard Bore high-compression kit 13.8:1 97 0931-0850 609.95 +2mm Big Bore, 468cc kit 12.7:1 99 0931-0851 659.95 +2mm Big Bore gasket kit - - 0934-6345 86.95 YZ450F 20-22, WR450F 21 Standard Bore cylinder (only) - 97 0931-1020 319.95 YZ450FX 19-20 Standard Bore cylinder (only) - 97 0931-0848 349.95 Standard Bore kit 12.8:1 97 0931-0849 599.95 +2mm Big Bore, 468cc kit 12.7:1 99 0931-0851 659.95 +2mm Big Bore gasket kit - - 0934-6345 86.95 YZ450FX 21-22 Standard Bore cylinder (only) 97 0931-1020 319.95 1 Requires case machining; instructions included. 1131
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