Thanks to its double fulcrum architecture the front brake is able to grip the rim with around 70 of the total braking force the rear brake which only has a single fulcrum stops the rear wheel from swerving the single pin structure also makes it possible to save a few grams compared with the double fulcrum one the analogy is obvious think of the abs on cars which prevents wheel locking when braking and think of all the safety this has provided differentiated campagnolo174 braking aims