Chain Knowledge Smart Assembly - Tool Free Connector | SIGMA PRO

Smart assembly – Replacing a bike chain and no need to remove it from cassette.

SIGMA PRO, a synonym of strong combination, makes the chain assembly safe and tool-free.

HOW IT WORKS

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

STEP 2
Push and hold the top plate through the chain link

STEP 3
Place the top plate over the free rivet groove while bending the link

STEP 4
Press down Sigma top plate until you hear a “click”

STEP 5
Check and make sure no stiff links

STEP 1
Bending it hardly with the top plate toward yourselves until it jumps out.

Noted: SIGMA PRO only for One-time use.

Sigma Pro Connector Product List
SC-20 | 9 SPEED
SC-23 | 8 SPEED
SC-25 | 7-6-5 SPEED
SC-33 | 1 SPEED