How to adjust bike Derailleur gears Shimano SIS gear setup adjusting bike DIY - YouTube
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
Bicycle Rear Derailleur Original Shimano Sis Tz31 6/7 Speed 18/21 Speed Shifter Mtb Mountain Bike Folding Bike Rd-tz30 Tz31a - Bicycle Derailleur - AliExpress