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 TOURNEY Bicycle RD-TY21-B-SS Rear Derailleur Short Cage 6 Speed MTB Bike | eBay
NEW Thumb Shifters with Cable Shimano Tourney Shifter x7Speed Index SiS | eBay