What is the difference between direct mount derailleur?
Direct mount rear derailleurs provide a few advantages compared to standard mount rear derailleurs, including more precise shifting (especially when a direct mount rear derailleur hanger is used, rather than a standard rear derailleur hanger with a B2 link), and enabling bike manufacturers to use thru-axle rear wheel …
What is a direct mount rear mech?
Rear wheels are easier to remove with a mounting option for SHIMANO SHADOW RD and SHIMANO SHADOW RD+. The direct mount feature is designed to suit a wide range of contemporary frames with large-section chainstays, in particular mountain bikes with thru-axle dropouts.
Will any rear derailleur fit my bike?
A derailleur for your mountain bike should match the specifications on the original derailleur. That is, while it doesn’t need to be the same model of derailleur, it does need to be the same brand, in almost every case. It also needs to match the number of gears, or have more intended.
What is a direct mount rear derailleur hanger?
As noted above, direct mount rear derailleur hangers were developed by bike manufacturers so that the B2 link (or “b-link”) would not be required, and the direct mount rear derailleurs could truly be attached directly to the direct mount rear derailleur hanger.
What is the difference between a B2 and a direct mount derailleur?
When compared to the standard rear derailleur hanger for a given bike model, the direct mount rear derailleur hanger is longer to span the extra length once occupied by the B2 link;
Why is the direct mount hanger oriented at a rearward angle?
That is because the direct mount hanger is meant to be oriented at a rearward angle to accommodate the more rearward placement of the direct mount rear derailleur. See the images below of our #513 hanger (standard mount) versus our #508 hanger (direct mount) that are used on the same BMC bike models, all viewed from the wheel-side of the hanger.
What is the B2 link on a shadow rear derailleur?
When Shimano first released the Shadow direct mount rear derailleur, Shimano included the “B2 link” or “b-link” to connect the rear derailleur to a standard derailleur hanger. As described above, the B2 link was required because the pivot point of the Shadow rear derailleur was moved further to the rear.