Vortex Alloy Rear Sprocket 520-40T Black SIZE_90 Links Tread pattern designed to ensure

Tread pattern designed to ensure optimum mileage and even wear

Constructed from an innovative advanced carbon polymer compound for improved strength and performance

the K8 Knee Brace Unbreakable has been certified as a medical device to help prevent leg and knee injuries such as ACL

Secured by design

Vortex Alloy Rear Sprocket 520-40T Black SIZE_90 Links Tread pattern designed to ensureVortex Alloy Rear Sprocket 520 40T Black Lightweight Aluminum Racing Sprocket 100% CNC manufactured in the USA Specially formulated alloy per Vortex specifications Unique tooth design increases sprocket longevity Vortex patented sprocket design is unlike any other sprocket