You can visually identify the new swingarms by the new hanger, as well as the derailleur cable exit port, which has been moved to the top of the stay. The new routing boosts heel clearance and offers an improved shifting feel, as it provides a smoother passage to the derailleur.
This Medium frame generally fits someone from 5'4" to 5'8", but there are some other factors, like arm and leg length, that determine a great fit. That’s why the best way to find your perfect fit is to consult the experts here at Sunshine Bicycle Center.