When we fulfill for and begin the tour at Alexanderplatz, We'll take the educate to Potsdam wherever the bikes might be watching for us (no must bike from Berlin!). Teach tickets ARE A part of the price of the tour. SRAM and Campagnolo also supply 12 speeds on their own https://danteuzdhk.wikipublicist.com/4645600/the_kids_gas_dirt_bikes_diaries