The slotted mounts on the B-rad provide 55mm of adjustment and allow you to locate the cage exactly where you want it within the range available. If you use the 3 slot version you also gain additional movement because it has 2 pairs of cage bolt holes. The picture above shows the cage mounted in the standard factory position, the picture below shows it mounted in the lowest position possible using the B-rad with the cage on the lowest pair of holes – I’m sure you’ll agree, it certainly makes quite a difference.
Alongside the adaptor brackets, Wolf Tooth manufacture additional bolt-ons to produce what you might describe as a ‘system’. Perhaps one of the most interesting from a bikepacking stand-point is the double bottle adaptor, which as you might have guessed allows you to fit two bottle cages where you previously had one.
I’ll admit to not having tried one, so have shamelessly stolen this picture but it looks like a practical solution when conditions dictate more water carrying capacity is required – Great Basin, Gobi, Yorkshire Dales?
B-rad adaptor brackets are priced between £18 and £23 depending which one you want and where you buy it from.