Patrick Möller built Boxbike around a single principle: folding bikes only, done properly. The workshop at Boxbike in Prenzlauer Berg is the natural extension of that philosophy — fast, specialist, and run by people who have spent years working on nothing but folding bikes. Same-day and next-day repairs are the standard here, which is rare in Berlin. Whether you have a snapped cable, a worn chainring, or a gear hub that needs rebuilding, Boxbike's mechanics know exactly what they are doing. Appointments are recommended. This is the workshop that served Berlin's folding bike community long before the city had an official Brompton Junction, and it has the track record to prove it.