XW-Ring chains are the best high-speed, extreme heat performance chains available today. So, if you've modified your ride into an extreme high-speed machine, you need the strength and performance of 525GXW. New light-weight high-performance sport bike chain. 525GXW has a maximum tensile strength rated at 9,300 foot pounds and is suitable for up to 1100cc street bikes and 800cc dirt bikes. RK's ultimate new generation high-performance sport bike chain. The "XW-Ring" is made of an advanced nitrile butadiene composite and features three contact lips and two convex outer stabilizers. This means three lubrication pools to protect against high speed abrasion, extreme heat build-up, torsional flex and loss of lubricant. Nitrile butadiene composite is oil and contaminant resistant, and the "XW" seal design is compression and distortion resistant to provide the ultimate in efficiency and performance with absolutely no O-ring drag. The "XW-Ring" provides the user with a 50 percent longer wear life than basic O-ring chains. Pin length in mm: 22.85mm. Maximum wear life index: 1,000. Maximum tensile in pounds/feet: 9,300 pounds/feet. Master link type: rivet. Weight in pounds per 100 links: 4.30 pounds. Maximum cc: 1100cc street/800cc 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.