BOLD MAGENTA part numbers are new for 2025 BELTS, CHAINS & SPROCKETS PARTS-UNLIMITED.COM ATV/UTV | 2025 753 SPROCKETS continued on next page. SPROCKETS (CONT) 1 Direct bolt-on sprocket. 2 Must reuse OEM dampers. 3 Two required. 4 Inner countershaft only. 5 Rear driven sprocket. FITS MODEL STOCK GEARING CHAIN SIZE FRONT SIZE PART # REAR SIZE PART # HONDA (CONT) TRX250X 87-88/91-92 13-38 520x86 13 1212-0153 38 K22-3505M 14 1212-0154 39 K22-3504G TRX300EX 93-08 TRX300X 09 13-38 520x86 13 1212-0153 38 K22-3505M 14 1212-0154 39 K22-3504G ATC350X 85 13-40 520x90 13 K22-2502M - - ATC350X 86 13-40 520x88 13 K22-2502M - - TRX400EX 99-01 15-38 520x86 15 1212-0156 38 K22-3505M - 39 K22-3504G TRX400EX 02-04 15-38 520x94 15 1212-0156 38 K22-3505M - 39 K22-3504G TRX400EX Sportrax 05-14 TRX400X 09, 12-14 14-39 520x94 13 1212-0324 38 K22-3505M 14 1212-0325 39 K22-3504G 15 1212-0326 TRX450R 04-05 TRX450ER 06-09, 12-14 14-38 520x94 13 K22-2502A 38 K22-3505M 13-38 520x94 14 K22-2502B 39 K22-3504G 15 K22-2502C TRX700XX 08-09 14-38 520x94 13 K22-2502A - - 13-38 520x94 14 K22-2502B 15 K22-2502C KAWASAKI KLT110 84-86 12-50 428x100 - - 49 2014491 49 K22-35132 KSF250 87-04 12-43 520x90 12 K22-2795 - - KXF250 87-88 13-39 520x96 14 K22-2740 - - KXT250 84-85 13-42 520x98 - - 43 1210-0283 KXT250 Tecate 86-87 13-37 520x96 16 K22-2662 - - KEF300 Lakota 95-03 12-43 520x100 12 K22-2795 - - KFX400 03-06 14-40 520x112 13 1212-0159 39 K22-3803M 14 1212-0160 40 K22-3803N POLARIS Big Boss 4x6 89 Axle to axle 13-42 520x88 13 K221041 42 K223009 30-30 520x108 30 K2220473 Big Boss 4x6 90-92 Axle to axle 12-42 520x88 12 K2210444 42 K223009 30-30 520x108 30 K2220473 250 Big Boss 6x6 91-92 Center inner Axle to axle 12-42 520x88 12 K2210444 42 K223009 - - 11 K221043 - - 30-30 520x108 30 K2220473 250 Cyclone 87 250 Scrambler 85-86 250 Trail Blazer 90 250 Trail Blazer 91 250 Trail Blazer 92 250 Trail Blazer 93 13-42 520x74 11 K221043 30 K222047 13-42 520x74 12 K221044 34 K222068 13-42 520x88 13 K221041 38 K222065 13-34 520x84 40 K222061 11-34 520x84 42 K223009 11-38 520x86 250 Trail Blazer 94 250 Trail Blazer 95 250 Trail Blazer ES 96-99 11-40 520x86 11 K221043 30 K222047 11-42 520x88 12 K221044 34 K222068 12-42 520x88 38 K222065 40 K222061 42 K223009 250 Trail Boss 85-89 250 Trail Boss 90 250 Trail Boss 91-93 250 Trail Boss 2x4 88-92 250 Trail Boss 94 250 Trail Boss 95-99 13-42 520x88 11 K221043 30 K222047 13-38 520x86 12 K221044 34 K222068 13-34 520x84 13 K221041 38 K222065 13-38 520x86 40 K222061 11-40 520x86 42 K223009 12-42 520x88 250 Trail Boss 4x4 87-88 250 Trail Boss 4x4 89 Center inner 12-42 520x74 12 K2210444 42 K2230095 12-42 520x88 - - - - 11 K221043 - - 250 Trail Boss 4x4 90-99 Countershaft outer Center inner 12-42 520x88 12 K2210444 42 K2230095 - - 11 K221058 - - - - 11 K221043 - - 250 6x6 93 Countershaft outer Center inner Axle to axle 12-42 520x88 12 K2210444 42 K2230095 - - 11 K221058 - - - - 11 K221043 - - 30-30 520x108 30 K2220473 Xplorer 300 4x4 95-99 13-40 520x84 13 K2210414 40 K2220615
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