ZTTO MTB Single Speed Cassette One Speed Cog 1Speed Gear Fixed 16T 17T 18T 19T 20T 21T 22T 23T HG Freewheel K7 Bicycle Sprocket

ZTTO Bicycle Single Speed Cassette

16T/17T/18T/19T/20T/21T/22T/23T

Fit for 10/11 speed HG hub body
weight : about 90g(16T) ~ 120g(23T)

Thickness is about 1.9mm

all chains can be used (the difference is only in durability, thicker chains are more durable but also heavier)

MTB or Fixed gear ?

Turn your MTB become a fixed gear just need one minute.

Increase contact area

Average force to protect the hub body