Endless Bike Kick Ass Cog 21t - Blue Ano Inseam-9.5 Side illumination provides great light

Side illumination provides great light spread

Includes a pre-installed half-link

When you need the absolute best from your training data the accuracy and reliability of the RED XPLR AXS Power Meter is the way to go

At the heart of Solix G UL250a wheels is the lightning-fast Solix drive mechanism that translates crank movement to instant propulsion

Disc Only (IS) Dropout QRx100 Color Black

Endless Bike Kick Ass Cog 21t - Blue Ano Inseam-9.5 Side illumination provides great lightMachined 7075 T6 aluminum Singlespeed cogs Wide base prevents the cog from digging into freehub bodies and reduces flex Splines are machined for perfect alignment and fit on all mountain cassette hubs The shape, width and height of the teeth are CAD designed and optimized for Singlespeed use with 3 32" chains (1 8" OK) The design offers more contact with the chain rollers for better wear resistance of both the cog and the chain Positive engagement