Product Review

As part of their continuing quality improvement program, the RK Chain factory has made a running production upgrade to their best-selling GB525XSO chain. The new upgraded GB525XSO chains feature heat treated hi-carbon alloy steel components with seamless rollers and shouldered bushings, and are fitted with RK's proprietary RX-Ring seal design. RK's new GB525XSO chains offer quality, performance and unbeatable value, for all but the most demanding high performance applications. RK's RX-Ring chains feature an X-ring shaped seal. Viewed in cross-section, the X-ring has two lubrication pools and seal points versus the single seal point/pool design of a regular O-ring chain. RX-Ring technology offers less torsional friction, increased high-stress performance, and a 30 percent longer wear life compared to standard O-ring chains. RK's new RX-Ring chains offer tremendous value, plus true quality and performance for all but the most demanding high performance applications. Pin length in mm: 22.85mm. Maximum wear life index: 750. Maximum tensile in pounds/feet: 8850 pounds/feet. Master link type: rivet. Weight in pounds per 100 links: 4.3 pounds. Maximum cc: 900cc street/750cc off-road. 19.2 links per foot. 15.875mm pin to pin center. Your original purchase of RK sealed-ring chain is warranted to be free of defects in material and workmanship for 20,000 miles of street riding or one year of off-road use. There is absolutely no warranty of any kind for an RK chain used in any racing competition.