PRODUCTS

For Single-speed
(Single chainring with double chain duard)
Crank arm: alloy forged. 
BCD: 144 or 130mm.  
Length: 160~175mm.
Alloy CNC Chainring, 
Teeth size: 1/2"-1/8" or 1/2"-3/32".
Teeth number: from 39T to 100T.
Color: silver or black, 
           (Available in other colors).
Compatible BB-axle: square or ISIS splined or Integrated BB-set.