Single Speed riding with the MTB Single Speed Disc wheelset is about simplicity and improved chain efficiency with no derailleurs and gear shifting. Due to the strong rim design these wheels deliver by withstanding the tortures of re-accelerating and attacking hills without compromising nimble handling. Engineered for easy maintenance. Mix and match spacers to dial in the chain line adjustment. Standard cassette lock ring lets you run a few gears from a Shimano / Sram cassette to turn the hub into a multispeed system. Lightweight and durable with a deep section rim design that is 22mm wide x 24mm high. They are compatible with many of the tubeless conversion kits on the market. 18 tooth cog and lock ring included Single speed specific cassette rear hub. Black spokes. Black hubs. 700 grams front 820 grams rear.