While this isn’t a new concept, it is a new product for Wheels Manufacturing. Much like the Wolf Tooth Components RoadLink, the Wheels Manufacturing Dropout-E is here to make your pedaling a bit easier – or at least allow you to run a larger cassette.
The idea is pretty simple. The Dropout-E extends the derailleur position by 21mm to allow for more clearance to run a larger rear cog. Designed to work with every standard derailleur hanger and rear derailleur, the adapter bolts to the derailleur hanger, and then the derailleur bolts to the adapter.
When used in a 1x set up, Dropout-E will allow for up to a 42t max rear cog. For double or triple cranksets, the adapter will allow for up to a 40t max cog. And if you’re the Campagnolo type, the adapter will allow for a 36t max cog with any Campagnolo crankset.
Machined from 6061 aluminum, the adapter includes a steel fixing bolt and comes in an anodized black finish for $18.