Discover the simple joy of riding a single speed mountain bike or road bike with this conversion kit! Features: Easily converts most multi-geared bikes to single speed Decrease weight and drivetrain complexity Quiet, simple, and smooth operation Compatible with Shimano-style HG splined freehubs 3 different cog options for dialing-in the perfect gear ratio Specifications: Type: Single Speed Conversion Kit Speeds: Single Speed Drive Type: Shimano/SRAM Color: Silver Weight: - Includes: (8) 4.5mm Spacers (3) 3mm Spacers (1) Chain Tensioner (1) 16T Cog (1) 18T Cog (1) 20T Cog (1) Shimano Compatible Cassette Lockring