Surly Single-Speed Kit Spacers and Lockring MFPN=EC-SR100 30mm OD asymmetric tubeless ready

30mm OD asymmetric tubeless ready carbon rims

The GP3 Evo is the next iteration of our Ergon's bar end grip which has been improved in countless details thanks to many years of experience in hand ergonomics

Designed for easy to set up and adjustment

(2) M5 T25 steel Torx bolts and (2) eccentric spacers to fit 104 BCD spider

Off-road control: TRA WheelSystem wide-wall rims allow lower tire pressure for grip and durability

Surly Single-Speed Kit Spacers and Lockring MFPN=EC-SR100 30mm OD asymmetric tubeless readySurly 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