New and Improved Yamaha YZ125 V-Force 4R Reed Valve SystemThe Yamaha YZ125 since it's re-birth in 2005 has been the go to Motorcycle for serious racer...
The new VForce4Ri utilizes a winged air guide that increases air velocity for a dramatic gain in throttle response. Paired with the new winged air gui...
The new VForce4Ri utilizes a winged air guide that increases air velocity for a dramatic gain in throttle response. Paired with the new winged air gui...