Surly Track Cog 1/8'' X 19t Silver MFPN=401225123 Tooth Count 36 Ring Position/Type

Tooth Count 36 Ring Position/Type Chain Retaining Single Ring Drivetrain Speeds 12 Chainring BCD 107 Color Black Defined Color Black Material Aluminum keyword search AXS

Standard interface Color Black Tooth Count 25 Teeth 25T

Color Slate/Stealth Rear Axle 12mm Thru x 148mm Rim Width (Internal) 30 Cassette Body Type SRAM XD 11/12 Speed Wheel Size 29" Defined Color Black ISO Diameter 622 / road / 29" Tire Type Tubeless Ready Clincher Hub/Brake Compatibility 6-Bolt Disc

Color Black Defined Color Black ISO Diameter 622 / Road / 29" ISO Width (mm) 65 Labeled Size 29 x 2

Surly Track Cog 1/8'' X 19t Silver MFPN=401225123 Tooth Count 36 Ring Position/TypeSurly track cogs are threaded the same as a BMX freewheel (1. 375 x 24 tpi right hand threads). This means that they will fit on single speed rear hubs as well as BMX freewheel hubs but this application is not recommended. Track cogs are meant to work on track hubs only. 415 hardened chromoly steel 1. 375" x 24 tpi Photo for color and material reference only Tooth Count 19 Size 1 8''