Harley and the Davidson young boys developed a model V-Twin engine for their bikes back in 1907. In the '90s Harley Davidson attempted to hallmark the "potato, potato" noise, which has and constantly will be forever connected to the iconic brand, no matter which other maker attempts to copy it. A common particular with V-Twins is ample torque. While V-Twins hand out a lot of power on top end, when you screw open your motorbike gloves at low speed, hang onto the 'bars and expect to be thrust back in the saddle!