RENTHAL Twinring™ Rear Sprocket - 48 Tooth - Black 1500-520-48GPBK Race Gear Bag Designed to work with most

Designed to work with most bicycle chains for pressing out the links to lengthen or shorten your bicycle to fit multiple cassette configurations

Instep and Achilles accordion flex zones constructed for superior control and support

starts thin for deep

ARShield palm landing zone reinforcement for additional protection in a key area

Race-proven seat technology

RENTHAL Twinring™ Rear Sprocket - 48 Tooth - Black 1500-520-48GPBK Race Gear Bag Designed to work with mostInner ring is the same high strength Ultralight 7075 T 6 aluminum used for the standard Renthal sprocket Outer ring is electro less nickel coated steel for ultimate durability and is designed with the minimum amount of material to keep weight down The outer ring is expanded at 200C and then fitted over the inner; this interference fit combined with the wave pattern ensures a permanent bond for the life of the chainwheel The flat socket head screws add