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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 RD-TY18GS SIS REAR DERAILLEUR,LONG CAGE GEAR MECH CHANGER SUIT 6,12,18 : Amazon.co.uk: Sports & Outdoors SHIMANO RD-TY18GS SIS REAR DERAILLEUR,LONG CAGE GEAR MECH CHANGER SUIT 6,12,18 : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/310M-KawxUL._AC_SX450_.jpg)
SHIMANO RD-TY18GS SIS REAR DERAILLEUR,LONG CAGE GEAR MECH CHANGER SUIT 6,12,18 : Amazon.co.uk: Sports & Outdoors
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