Road Bike Frame Rear Derailleur Direct Mount Rear Hanger Suitable For SL6/SL7/VENGE /A​ETHOS Disc Road Bikes

Product Name :Direct Mount Rear Derailleur Hanger

Brand : Greatin

Material :Alloy 7075 T6

Color：Black

Weight:12.8g

Suit for:

Spec-allized Disc Brake Version

TARMAC SL8

TARMAC SL7

TARMAC SL6

VENGE PRO DISC

AETHOS

ROUBAIS

20 Years Later Road Bikes

What are direct mount rear derailleur hangers?

To understand why direct mount rear derailleur hangers are needed, we first need to explain (a) what is a

direct mount rear derailleur, and (b) the “B2 link” (or “b-link”) that was originally used to connect the

direct mount rear derailleur with a standard rear derailleur hanger before the advent of direct mount

derailleur hangers.

Direct Mount Rear Derailleur

Shimano first introduced direct mount rear derailleurs with the release of their Shadow rear derailleur line in

2012. In the Shadow product line, the pivot point on the rear derailleur was moved further to the rear and the

rear derailleur itself positioned more directly under the rear cassette. As a result, the Shadow rear derailleur

has a lower profile than standard rear derailleurs, which obviously has benefits in the more varied terrain

encountered with a mountain bike. This geometry also provides other capabilities compared to standard rear

derailleurs:

Creates a stronger linkage between the frame and rear derailleur, resulting in more precise shifting;

Provides more room to remove and replace the rear wheel, enabling faster and easier rear wheel changes;

Enables the frame to be designed such that the rear dropout can accommodate thru-axle wheel mount;