Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Purple MFPN=521 33 Bike Weight Limit (per

33 Bike Weight Limit (per bike) 80 Clamp Style Seatpost Stand Style Bench-mount

Compatible with standard and Pro models

11 speed road cassettes with Sunrace`s Super Fluid Drive technology

Brake Material Aluminum Pad Type Cartridge Brake Reach 39-51mm Brake Weight 300g (pair) Position Front and Rear Primary Color Grey

Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Purple MFPN=521 33 Bike Weight Limit (perWheels Mfg. SOLO XD and SOLO SPLINE Single Speed cogs are constructed with high end 7075 aluminum and designed with narrow to wide alternating tooth pattern allowing for superior chain retention. Cogs are optimized for use with Wheels Mfg. SOLO XD XD XDR and SOLO SPLINE Single Speed Conversion kit carrier systems only. Crafted with high end 7075 aluminum for light weight and extreme durability Cogs are optimized for use with Wheels Mfg. SOLO XD XD XDR