Shimano SL-A105 is a rear derailleur shifting lever designed to work with the Shimano 105 Series. It features the Hexagon-Release mechanism for easy operation and tightening accuracy. The Golden Arrow pattern on polished bodies matches any system, and the sophisticated design adds a touch of style to any bike.

The SL-A105 is compatible with both short and long cage rear derailleurs. The short cage version has a total capacity of 28 teeth or less, while the long cage version has a total capacity of 34 teeth or less.

To adjust the chain length, simply put the chain on the smallest gear of the freehub and on the largest gear of the front chainwheel. Adjust the length of the chain by checking that the center line connecting the rear derailleur guide pulley and the tension pulley is at right angles to the ground.