Harley-Davidson's Twin Cam engine powered much of its lineup in the early 21st Century, but had some common major problems that didn't please owners.

Harley-Davison motorcycles are known for their use of big V-twin engines. The company's proprietary engine design has come a long way since the introduction of the first 49.5 cubic-inch version in ...

MILWAUKEE (July 20, 2011) -- Harley-Davidson offers more Big Twin performance for 2012 as its Twin Cam 103™ powertrain is standard equipment on Softail® and Touring motorcycle models and most Dyna® ...