Surly Track Cog 1/8'' X 16t Silver road / mountain Brake Caliper Type Post Mount

Brake Caliper Type Post Mount Mount | Rotor Size 160 Post | 180 Rotor Mount | Rotor Size 140 Post | 160 Rotor Mount | Rotor Size 180 Post | 200 Rotor

TRP HY/RD disc brake calipers have the power and modulation of hydraulic disc brakes

5mm width works well with a variety of tire widths

Cassette Body Type Shimano/SRAM 8 9 10 Speed Cassette Cogs 12-13-15-17-19-22-25-28-32-36 Drivetrain Speeds 10 Range 12-36 Color Silver Defined Color Silver

}Zipp Speed Box Frame Bag 2

Surly Track Cog 1/8'' X 16t Silver road / mountain Brake Caliper Type Post MountSurly Track Cog 1 8'' X 16t 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 16