Sunstar 5-361949BK Works Triplestar Black 49-Teeth 520 Chain Size Rear Aluminum Sprocket

Sunstar's new Works Triplestar black aluminum rear sprocket features most of the same great features as the famous hard anodized version, only that it is black anodized for a great looking color finish. Made from 7075-T6 aluminum and with an extra-thick black color anodized coating, Sunstar users get 15-20 percentage longer life versus other options. Computer designed weight reduction holes and an exclusive tooth-valley design that provides up to 50 percentage more chain roller contact area results in the lightest, most stable aluminum sprocket possible.