its the TT600 RE not just E
which makes it heavier and less high spec.
according to some, the standard gearing would be a bit low which makes the engine rev. higher so better off road..
however for easy tarmac riding, may increase the gearing (reduce the rear sproket size) to say 44 which may make it to cruise at say 70mph with less revs. less stress to the engine.
not sure on the frame..
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