BOLD MAGENTA part numbers are new for 2023 BELTS, CHAINS & SPROCKETS PARTSCANADA.COM ATV/UTV | 2023 351 SIZE AND TYPE WEAR LIFE INDEX AVERAGE TENSILE STRENGTH (LB.) MAXIMUM ENGINE CC STREET/DIRT 520 Std. 100 7,200 250/NA 530 Std. 100 7,200 400/NA GB 420 MXZ 200 5,000 150/100 GB 428 MXZ 200 5,800 250/125 SIZE AND TYPE WEAR LIFE INDEX AVERAGE TENSILE STRENGTH (LB.) MAXIMUM ENGINE CC STREET/DIRT GB 520 MXZ4 300 9,000 NA/500 GB 520 MXU 600 9,000 NA/500 520 EXW, GB 520 EXW 1,000 8,500 400/750 FEATURES All RK chains are pre-stressed and pre-stretched to ensure equal load distribution and minimal maintenance.They’re made of the highest-grade medium carbon alloy steel available, with all components shot-peened and heat-treated. HOW TO ORDER RK chain is available cut-to-length. Precut lengths are individually boxed with a clip-type connecting link.When ordering precut lengths, the number of links is indicated at the end of the PART # (example: PART #RKM52082 for a 520 Standard chain with 82 links). 420 MXZ AND GB 420 MXZ (GOLD COLOR) DESCRIPTION 420 MXZ NATURAL PART # 420 MXZ GOLD PART # 110 links 503644 RK420MXZ110 120 links 503513 RK420MXZ120 134 links 503645 503647 Clip connecting link 503550 R18422MXZ 428 MXZ1 AND GB 428 MXZ1 (GOLD COLOR) DESCRIPTION 428 MXZ1 NATURAL PART # 428 MXZ1 GOLD PART # 120 links 1221-0368 1221-0375 136 links 1221-0372 1221-0383 Clip connecting link 1225-0740 1225-0741 520 MXZ5 AND GB 520 MXZ45 (GOLD COLOR) DESCRIPTION 520 MXZ5 NATURAL PART # 520 MXZ5 GOLD PART # 110 links 1221-0405 - 120 links 1221-0410 - 130 links 1221-0412 - Clip connecting link 1225-0748 1225-0744 HEAVY-DUTY (MXZ/4) • Made for the serious motocross racer with all components heat-treated for high-performance durability • Features chromoly steel construction with seamless rollers and bushings, and oversized alloy pins for added strength • Ideal for professional level from 80cc to 500cc open class racing • Chain includes clip connecting link M 428 H DESCRIPTION PART # 120 links 503485 136 links 503486 Clip connecting link 503487 M 520 H DESCRIPTION PART # 110 links 503488 120 links 503489 Clip connecting link 503491 HEAVY-DUTY (H) • Heavy-duty chain lasts much longer than standard chain • For use on motorcycles that did not come stock with an O-ring chain • Chain includes clip connecting link
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