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.
Features:
415 hardened chromoly steel
1.375″ x 24 tpi
Photo for color and material reference only
Specifications: Type: Single Speed Cog Speeds: Single Speed (3/32″ or 1/8″) Drive Type: Threaded Track Color: Silver Weight: –
