Surly Single-Speed Kit Spacers and Lockring Model=GRX ST-RX815 Di2 Super fast rolling tire with

Super fast rolling tire with widely spaced knobs to handle a wide range of conditions

Spoke Interface J-Bend Defined Color Black Color Black Hub Drilling 28 Bearing Type Sealed Cartridge Front Axle 15mm Thru x 110mm Hub/Brake Compatibility 6-Bolt Disc

and theyre shaped and structured to ensure that their contents wont ever come bouncing out

Durable aluminum construction

3mm offset for boosted setups

Surly Single-Speed Kit Spacers and Lockring Model=GRX ST-RX815 Di2 Super fast rolling tire withSurly Single Speed Kit Spacers and Lockring. Surly 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