Surly Track Cog 1/8'' X 18t Silver CheckoutTitle=Schwalbe Green Marathon Tire - 20 x 1.50 To install

To install

Rear tire with 3D multi-angle knobs designed for cornering traction

allowing you to focus solely on your workout

Trapezoid-cut offers optimum widestance tire shaping trailduty impact resistance STR tubeless tire retention and weight savings Brake Compatibility Disc Only Rim Width (Internal) 74 Brake Track None Manufacturer Spec ERD (mm) 551 Valve Presta Color Black Wheel Size 26" Fat Defined Color Black ISO Diameter 559 / 26" MTN Hub Drilling 32 Rim Material Alloy Tire Type Tubeless Ready Rim Center Offset (mm) 0

Surly Track Cog 1/8'' X 18t Silver CheckoutTitle=Schwalbe Green Marathon Tire - 20 x 1.50 To installSurly 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 Tooth Count 18 Size 1 8''