four stroke
General
28/10/22
The E-Rex opposed-piston engine is being hailed as a gamechanger thanks to low-weight, high power density and no crankshafts
First Ride
31/05/11
For the first time on a sports 125, Aprilia now have a bike that features a four-stroke engine
MotoGP
05/01/11
KTM to return to GP racing with an entry in the Moto3 class in 2012