BOLD MAGENTA part numbers are new for 2025 PARTSCANADA.COM 2025 | OFFROAD CHAINS CHAINS 450 520 SO CHAINS DESCRIPTION PART # 100 links 503668 110 links 503669 DESCRIPTION PART # 120 links 503670 Clip connecting link R18-522SO O-RING (SO) •Features a flat contact patch that holds the lubrication in place, resulting in a smooth transfer of power •Three times the wear life of a standard non O-ring chain • Strongest, lightest, quietest, most durable RK chain available •Eight times the wear of standard chain •Designed to handle the ever-increasing horsepower ratings of today’s bikes •Chains include clip connecting link GB520XRU (GOLD COLOR) CHAIN NO. OF LINKS PART # 120 1221-0413 Rivet connecting link 1225-0749 520 XRU (UW-RING) ROAD RACING TRACK CHAIN •520XRU was designed for professional MotoGP racing • Featuring UW-Ring seals, XRU is a lightweight professional racing chain •UW seals reduce friction while maintaining optimal horsepower delivery from the start of the race to the end •Tensile strength of 9,000 lbs. •Maximum capacity of 1,000cc and a peak output of 265 hp NOTE: Road racing Use ONLY. Not to be used for daily street use. M520 - CUT-TO-LENGTH OR BULK NO. OF LINKS PART # 100 RKM520100 110 RKM520110 120 RKM520120 CONNECTING LINK Clip connecting link R18-M522 M525 - CUT-TO-LENGTH OR BULK NO. OF LINKS PART # 120 RKM525120 CONNECTING LINK Clip connecting link 503546 M530 - CUT-TO-LENGTH OR BULK NO. OF LINKS PART # 110 RKM530110 120 RKM530120 CONNECTING LINK Clip connecting link R18-M532 M420 - CUT-TO-LENGTH OR BULK NO. OF LINKS PART # 100 RKM420100 110 RKM420110 120 RKM420120 136 503470 CONNECTING LINK Clip connecting link R18-M422 M428 - CUT-TO-LENGTH OR BULK NO. OF LINKS PART # 100 RKM428100 110 RKM428110 120 RKM428120 134 1220-0404 136 503474 CONNECTING LINK Clip connecting link R18-M430 STANDARD (M) •Heat-treated medium carbon alloy steel construction •All components heat-treated and shot-peened for maximum strength •Four-point pin riveting and solid rollers •For motorcycles up to 400cc that did not come with an O-ring or heavy-duty chain as standard equipment •Chains include clip connecting link •M420 – For street bikes up to 125cc and dirt bikes up to 90cc •M428 – For street bikes up to 150cc and dirt bikes up to 125cc •M520 – For street bikes up to 250cc •M525 – For street bikes up to 400cc •M530 – For street bikes up to 400cc
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