Smart assemble – replacing a bike chain quickly and easily.

SIGMA PRO makes chain fitting safe and tool-free.

SIGMA pro connector in 10 speed bike chain

HOW IT WORKS

LOCKING

STEP 1
A. Sigma Pro link
B. Sigma Pro top plate

STEP 2
Insert the two pins into the chain. Fit the plate. Push to click the plate into the first groove

STEP 3
Bend the chain to allow you to fit the second pin into the plate

STEP 4
Press until you hear a click

STEP 5
Check the chain is linked correctly with no stiff links

◆UNLOCKING

STEP 1
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

Sigma Pro Connector Product List

SC-20 | 9 SPEED
SC-23 | 8 SPEED
SC-25 | 7-6-5 SPEED
SC-33 | 1 SPEED