SRAM XX1 Rear Derailleur - 11 Speed Medium Cage Black CheckoutSpec= Navy Blue Aero optimized fixie wheelset with

Aero optimized fixie wheelset with 62mm tall carbon rims laced to 240 Dicut hubs with flat forged Aerolite T-head spokes

Designed to work with an XDR driver body Range 10-28 Cogs 10-11-12-13-14-15-16-17-19-21-24-28 Cassette Body Type SRAM XDR Drivetrain Speeds 12 Color Silver/Black Defined Color Black

Easy to attach to any bike including E-bikes

Vendor Sapim Manufacture Number GICR1430400 ZO--- SAP1104 Model Name CX-Ray Bladed Straight Pull Category Spokes

Microfiber Cover: Sleek and durable finish designed to last Length 240 Rail Material Carbon Saddle Cut Out No Material Synthetic Clamp Style Std Rails Gender/Age Unisex Color Black Weight 207 Width 157 Defined Color Black

SRAM XX1 Rear Derailleur - 11 Speed Medium Cage Black CheckoutSpec= Navy Blue Aero optimized fixie wheelset withProfessional grade derailleur built with carbon fiber and aluminum featuring roller clutch pulley cage and cage lock feature for easy wheel installation. Wide tooth narrow tooth pulley wheel maximizes chain control by fitting inner and outer chain links perfectly X Horizon design maintains constant chain gap across all gears and eliminates ghost shifting Roller bearing clutch eliminates derailleur bounce and chain slap Cage Lock feature simplifies