S and S Machine
Bicycle Torque Couplings (BTCs)
Your Travel Bike........Your Only Bike!

Why S and S Couplings can't be retrofit to aluminum frames.

Aluminum S and S Couplings are currently not available. In the future, framebuilders may offer aluminum couplings on new bikes but I doubt that it will ever be economical to retrofit couplings to an aluminum frame. Even when considering the retrofit of a steel frame, which is easy to do, it is frequently  more economical to sell your existing bike and buy a new coupled bike rather than doing a retrofit. 

Here are some of the problems encountered when retrofitting couplings to an aluminum frame.


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