retrobikefranken - Shimano SIS RD- TY20 A derailleur
Sis Derailleur Discount, 60% OFF | www.visitmontanejos.com
New 7 speed commuter with Shimano SIS index. No noise on stand, shifts smoothly but low clanking sound on road when pedaling in 4th & 5th though not other gears : r/bikewrench
Shimano SIS Rear derailleur fixing problem - Bicycles Stack Exchange