![Looking at the Shimano manual for my RD-7800 I see that they recommend (see picture 2) more tension in the chain than I currently (original length from the factory) have on my Looking at the Shimano manual for my RD-7800 I see that they recommend (see picture 2) more tension in the chain than I currently (original length from the factory) have on my](https://preview.redd.it/jks7kh6cs5n71.png?width=640&crop=smart&auto=webp&s=5871e95b817f4dbf9f1c52297ccabcd1b6ba07aa)
Looking at the Shimano manual for my RD-7800 I see that they recommend (see picture 2) more tension in the chain than I currently (original length from the factory) have on my
![Shimano Dura Ace RD-7800 GS Mid/Long Cage 10 Speed Rear Derailleur (Almost NEW <400-mi) - Bike Recyclery Shimano Dura Ace RD-7800 GS Mid/Long Cage 10 Speed Rear Derailleur (Almost NEW <400-mi) - Bike Recyclery](https://cdn11.bigcommerce.com/s-1rmgckn/images/stencil/2280x2280/products/9029/106443/high_end_used_bike_parts_shop_portland_753__54644.1594949644.jpg?c=2)
Shimano Dura Ace RD-7800 GS Mid/Long Cage 10 Speed Rear Derailleur (Almost NEW <400-mi) - Bike Recyclery
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Shimano Dura Ace 7800 RD-7800 Rear Derailleur 10 Speed Short Cage, 7/1 – EJRecyclery - Cycling New & Used
![Shimano Dura Ace 7800 RD-7800 Rear Derailleur 10 Speed Short Cage, 9/1 – EJRecyclery - Cycling New & Used Shimano Dura Ace 7800 RD-7800 Rear Derailleur 10 Speed Short Cage, 9/1 – EJRecyclery - Cycling New & Used](https://ejrecyclery.com/cdn/shop/files/capture000034_2c432151-0266-45a7-a582-62dfdb6488f1_grande.jpg?v=1705011398)
Shimano Dura Ace 7800 RD-7800 Rear Derailleur 10 Speed Short Cage, 9/1 – EJRecyclery - Cycling New & Used
![Unit Shimano SHIMANO , RD-7800-SS, DURA-ACE , 10-SPEED DIRECT ATTACHMENT Front and rear derailleurs Rear derailleurs Unit Shimano SHIMANO , RD-7800-SS, DURA-ACE , 10-SPEED DIRECT ATTACHMENT Front and rear derailleurs Rear derailleurs](https://www.bikesport.bg/data/uploads/originals/products/RD037.jpg)
Unit Shimano SHIMANO , RD-7800-SS, DURA-ACE , 10-SPEED DIRECT ATTACHMENT Front and rear derailleurs Rear derailleurs
![Shimano Dura Ace 7800 RD-7800 Rear Derailleur 10 Speed Short Cage, 7/1 – EJRecyclery - Cycling New & Used Shimano Dura Ace 7800 RD-7800 Rear Derailleur 10 Speed Short Cage, 7/1 – EJRecyclery - Cycling New & Used](https://ejrecyclery.com/cdn/shop/files/capture000007_0f4e7be3-c752-405a-b0be-f39a0c2b6a21_grande.jpg?v=1702233520)