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
Shimano SIS System? - Bike Forums
Shimano Tourney RD-TY300-SGS Rear Derailleur - 6/7 Speed, Long Cage – The Path Bike Shop
Shimano derailleur RD-TY18 with hook 6-wheel SIS road - MTBIKER.shop
Replacement for an old 6-speed SIS rear derailleur : r/bikewrench
Quick Tips - Shifting Using the Shimano SIS Index Thumb Shifter | Cyrusher TV - YouTube