Surly Track Cog 1/8 X 18t Silver MFPN=1-LED-HMOUNT-V604 }Shimano XTR BL-M9100 Hydraulic Brake

}Shimano XTR BL-M9100 Hydraulic Brake Lever - Spec EV Clamp Band Right

}DT Swiss E 512 Rim - 29" Disc Black 32H

model SteelBraid 12 length 12 cable 12mm color black

Derailleur Capacity 20 Double or Triple Triple Drivetrain Speeds 7 Drivetrain Speeds 8 Front Der/Shifter Compatibility Shimano Mountain Front Derailleur Cable Pull Dual Front Derailleur Clamp 34

Surly Track Cog 1/8 X 18t Silver MFPN=1-LED-HMOUNT-V604 }Shimano XTR BL-M9100 Hydraulic BrakeSurly Track Cog 1 8 X 18t 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 18