Harley-Davidson Twin Cam V-Twin Motorcycles – HISTORY OF THE BIG TWIN The Harley-Davidson Twin-Cam V-twin was introduced in 1998. Here’s a look at the technical elements and developments that allowed the 88-cu.-in. engine the increase power and reliability. The Harley-Davidson Twin-Cam V-twin was introduced in 1998. Here’s a look at the technical elements and developments […]