Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Blue MFPN=F9984 }Jagwire Pro Shift Kit Road/Mountain

}Jagwire Pro Shift Kit Road/Mountain SRAM/Shimano Orange

}Wolf Tooth Tanpan 10-Speed Conversion

CNC Machined 6061-T6 Aluminum Platform Injection Molded Copolymer Interface

Bearing Type Sealed Cartridge Color Black Defined Color Black Front Axle 20mm Thru x 110mm Boost Hub Drilling 32 Hub/Brake Compatibility 6-Bolt Disc Spoke Interface J-Bend

Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Blue MFPN=F9984 }Jagwire Pro Shift Kit Road/MountainWheels Manufacturing SOLO XD Cog 21t Blue. Wheels 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