Smart assemble – replacing a bike chain quickly and easily.
SIGMA PRO makes chain fitting safe and tool-free.
HOW IT WORKS
A. Sigma Pro link
B. Sigma Pro top plate
Insert the two pins into the chain. Fit the plate. Push to click the plate into the first groove
Bend the chain to allow you to fit the second pin into the plate
Press until you hear a click
Check the chain is linked correctly with no stiff links
Bend the chain gently towards from you with the top plate outermost until the plate pops off.
Note: The SIGMA PRO is single-use only