CASSETTE SPROCKET, CS-R8000 11-25T, ULTEGRA, 11-SPD, 11-12-13-14-15-16-17-19-21-23-25T

Description

* 5 largest cogs on alloy and composite spiders* Light weight and high performance* Aluminum lockring* Nickel plated finish* The 11-34 cassette (120615-07) is compatible with 10 and 11 speed freehub bodies (use 1.85mm spacer for 11 speed road)* Other sizes are compatible only with 11 speed road hubs