Surly Track Cog 1/8 X 17t Silver MFPN=TB72390100 } 100% uni-directional carbon body

} 100% uni-directional carbon body provides a lightweight structure that is torsionally and laterally stiff

}FRK MY13 ALLEZ C2 FORK BLK/CHAR/WHT

Defined Color Black Rings 32 Spindle Interface Type SRAM DUB Chainring BCD Direct Mount SRAM Color Black Chainline/Hub Compatibility 141/148 Boost Hubs Designed for ebike Yes Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Number of Chainrings Chain Retaining Single Crank Intended Use Mountain BB Included No Pedal Spindle 9/16" Crank Length (mm) 170

Quick change system allows for easy blade replacement

Surly Track Cog 1/8 X 17t Silver MFPN=TB72390100 } 100% uni-directional carbon bodySurly Track Cog 1 8 X 17t Silver. Surly 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 TECH SPECS Tooth Count 17