Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits BLK Thickness-3.5mm Swapping - Very fast chainring

Swapping - Very fast chainring change out with 5 small bolts and no nuts

0mm rise 40mm width 800mm up/back sweep - material aluminum color orange weight 295g

while providing stability at any speed

4 Tire Bead Folding Tire Diameter 27

}Lezyne Zecto Drive 250+ / Zecto Drive 200+ Headlight and Taillight Set Black

Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits BLK Thickness-3.5mm Swapping - Very fast chainringCogs 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 black