Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Purple Model-EA50 Cogs are designed with narrow-wide

Cogs are designed with narrow-wide alternating tooth pattern allowing for superior chain retention

Set of 2 (for one profile)

} Full replacement cage assembly including inner and outer cages

Proling and Turnamic boots

Machined Aluminum expansion wedges paired with a knurled sleeve ensure a secure fit with the correct preload amount

Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Purple Model-EA50 Cogs are designed with narrow-wideCogs 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