Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Purple CheckoutSpec= Addix Speedgrip The low-profile design reduces weight

The low-profile design reduces weight minimizes snag points and provides a clean sleek look

Carbon Fiber Reinforced End

Don't worry

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Variable knurl pattern alternates from smooth to sharp texture for traction without irritation

Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Purple CheckoutSpec= Addix Speedgrip The low-profile design reduces weightCogs are designed with narrow wide alternating tooth pattern allowing for superior chain retention Cogs are optimized for use with Solo XD Carrier system only Will not work with 13spd Campagnolo chains or 12spd Shimano HG+ chains TECH SPECS model SOLO XD description SOLO XD replacement cog teeth 21 chain 9 12sp color purple