1658 Safety zone MXU GB520MXU UW-ring works Motocross chain The MXU utilizes RK’s advanced UW-ring for superior sealing and longetivity. The MXU was tested by the teams that race it both on track and on dyno. Real world testing proved that this chain is very durable and dyno testing proved that horsepower is maximized and lap times consistent. The MXU was built super narrow to run on almost any motorcycle and keep the weight to a minimum. This chain is super strong with all the specifications you expect from an RK racing chain, and the future will prove that RK has the sealed ring technology to run with non sealed racing chains most are accustomed to. GXW GB520GXW, GB525GXW, GB530GXW (And Non-Gold GXW) The RK “XW-ring” is oil and contaminant resistant, and the “XW” seal design is compression and distortion resistant to provide the ultimate in efficiency. The “XW-ring” eliminates the risk of seal failure on the highest performance machines and provides the user with a 50% longer wear life compared to standard O-ring chains. From FIM World GP’s to Paris-Dakar and the Baja 1000, RK “XW-ring” chains dominate the competition! XW ring cutaway RX ring cutaway MXZ GB420MXZ, GB428MXZ (and Non-Gold 420MXZ & 428MXZ) GB520MXZ (and Non-Gold 520MXZ) Available in Gold or non-Gold finish. 420 and 428 MXZ racing chains are the strongest in their class giving you the best value-performance rating of any MX Racing Chain in the world today! Made for the serious Motocross racer, GB520MXZ chains feature Chromoly steel construction with seamless rollers and bushings, and oversized special alloy pins for added strength. All components are heat treated using RK’s exclusive HIT (Heat Induction Transfer) process. With a maximum tensile strength rated at 8800 foot pounds, GB520MXZ is the strongest Motocross chain available for the professional level 125cc to 250cc. XSO “RX” Ring Chains GB520XSO, GB525XSO, GB530XSO (And Non-Gold XSO) The affordable sealed performance chain for all Enduro, Cross-country, Street and ATV/Quad applications is now available with Gold inner and outer side plates. RK’s “RX-ring” technology offers less torsional friction and increased highstress, high-speed performance. All “RX-ring” chains get their performance pedigree from RK’s leading edge Baja 1000 and Paris-Dakar dominating “XW-ring” chain design. “RX-ring” chains offer tremendous value plus true quality and performance for all but the most demanding high-performance applications.
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