Prompted by this thread, have just looked at our timing belt - probably ~10-12000 miles (was changed when we had Chassis/Centa/...etc done at the factory. No markings on it (worn away).

We have an S&S spare (S&S 106-0571)

What are current thoughts/experiecne on belt life and recommended mileage to change??

Breakage is more a hassle than a risk given the non-interference nature of the engine - or is it a case of running until it breaks unless regular inspection shows obvious degradation....??