Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Teal ModelNumber=K1516 5" 160 mm 15QR x

5" 160 mm 15QR x 110 mm 37 mm Offset Shiny Black Grip 2

}Shimano Dura-Ace RD-9070 Rear Derailleur B-Axle Assembly

Tooth Count 20 Defined Color Blue

Length 120 Lock Style Keyed Advertised Weight 5

Wheels Manufacturing SOLO-SPEED Cog - 21t Fits SOLO-SPLINE SOLO-XD kits Teal ModelNumber=K1516 5" 160 mm 15QR xWheels Manufacturing SOLO XD Cog 21t Teal. 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