Surly Single-Speed Kit Spacers and Lockring Model-Tubeless 45 Kit Best-in-class weather sealing protects bearings

Best-in-class weather sealing protects bearings from water

The standard pair comes with RM2+3 wheels

Increasing the overlap will provide additional cushion

Can be upgraded to a power meter

Dimensions: 17

Surly Single-Speed Kit Spacers and Lockring Model-Tubeless 45 Kit Best-in-class weather sealing protects bearingsSurly Single Speed Spacer Kit comes with a selection of anodized aluminum spacers so you can get a perfect chainline to complement your road track or mountain crankset. Our large diameter stainless steel Cassette Lockring holds everything together and perfectly matches the outside diameter of the spacers. Plus it matches the machined shoulder of our single speed cassette cogs (not included). The lockring is machined to utilize a common Shimano