SRAM Red XG-1090 11-25 10 Speed Cassette Size:11-25 Weight (based on 114 links):

Weight (based on 114 links): 244g

Shimano's bullet proof Alfine 8sp speed hub gearing for low/no maintenance city riding

It is accessed using a number code (up to ten digits) that you enter on a keypad

About Park Tool Ratcheting Wrench / Spanner 17MM (MWR-17)

Made from a thick

SRAM Red XG-1090 11-25 10 Speed Cassette Size:11-25 Weight (based on 114 links):About SRAM Red XG 1090 11 25 10 Speed CassetteThe new SRAM RED Powerdome X is the most advanced cassette ever made. Its super light, deadly silent, and delivers an undeniable performance advantage. The eight cogs in the middle are machined from a single block of high grade tool steel, increasing stiffness while weighing even less than a titanium cassette. Between each cog in the block is a StealthRing elastomer to reduce vibration and noise. Cutouts