Surly Single Cassette Cog 3/32" Splined 20t Advertised Weight-0.7 Updated Rail damper means less

Updated Rail damper means less time turning dials and more time shredding trails

or Portland

60 Tire Compound SmartEVO DH

Disc Pad Material Organic Backplate Aluminum Cooling Fins Yes Model Compatibility SRAM HRD Level Ultimate/TLM Pad Shape SRAM Monoblock

Surly Single Cassette Cog 3/32" Splined 20t Advertised Weight-0.7 Updated Rail damper means lessSurly Single Speed Cogs. Designed as a singlespeed cog but may also be stacked and used with 9 speed shifter. Multi gear use will result in slower less crisp shifting than cogs designed for multi gear systems Fit Shimano freehub splines SCM 415 hardened chromoly steel Photo for color and material reference only Tooth Count 20 Cassette Body Type Shimano HG 7 Speed Drivetrain Speeds Single Speed 3 32" Material Steel