How do habits change? Some mobility scholars describe habits as regularly evolving. Several psychologists, on the other hand, observe radical changes originating from disruptions in our environment. I show that these two perspectives can be integrated using Berger and Luckmann's model of individual change. In the first phase, a shock from the environment disrupt a habit or habits, which are later replaced by new habits progressively learned as part of a group. I applied this model to two French bike workshops active in cycling subculture. I used interviews and participant observation in the two workshops to examine how communities potentially lead their members to change their body habits (their way of moving, seeing, touching), their perception of the car and social mobility, and to adopt a radical definition of the "good life". I found that the depth and breadth of habit change depended on the individual's involvement in the bike workshop and of the type of shock he/she experienced. As a result, I show how an instance of the cycling subculture transforms habits, both progressively and radically, by strengthening the relationship between individuals and their bikes. The article opens the path to applications of Berger and Luckmann's theory to mobility.