Elevn Chromoly Cogs

The Elevn Chromoly Cog is a CNC-machined steel cassette cog for BMX single-speed drivetrains on Shimano-compatible cassette hubs. Its 5mm-wide base spreads pedaling load across the freehub body to reduce spline wear, and it comes in 14T to 18T.

Features

• CNC-machined chromoly steel wears far better than aluminum under chain load
• 5mm-wide base for more contact with the freehub body
• Shimano-compatible spline
• Smaller cogs (14T-15T) for higher gearing and top speed, larger cogs (17T-18T) for easier acceleration

Specs

• Material: Chromoly steel, CNC-machined
• Spline: Shimano-compatible cassette
• Base width: 5mm
• Teeth: 14T, 15T, 16T, 17T, 18T
• Color: Black

Fitment

Fits Shimano-compatible spline cassette hubs. Not compatible with oversized (OS) spline hubs or other non-Shimano spline patterns. Requires a cassette lockring (sold separately).