Aprilia RS125 is my all time favourite of 2-stroke bike. It features a design that resembles it larger capacity brother with power of almost 30hp. That’s a huge amount of power for a 125cc engine.
This time it is the moment for it the Aprilia RS4 125, which is a 4-stroke 125cc bike. The tech specs for the engine are as good as it can gets. It features DOHC, FI, Magneti Marelli ECU, 6-speed gearbox, 4-piston front caliper with 300mm and many more.
Anyway, it is much less powerful than the 2-stroke RS125. Some says it is only at 15hp.
Technical specification, official overview and 8 more pictures after the jump (more…)