Twin Cam Archives - Engine Builder Magazine
Harley-Davidson Twin Cam 107cid Engine

As one of the youngest people to ever reach Harley-Davidson’s Master Technician level, Marty Smestad of Capitol Speed Shop knows a thing or two about V-Twin work. He recently took parts from a 2007 Road King and 2015 Street Glide to build a customer a Harley-Davidson Twin Cam 107cid engine.

Building Better Cylinder Heads for Harley-Davidson’s Big Twin Engines

The Harley-Davidson cylinder head aftermarket is broad and deep with offerings from mildly modified stock castings to all-out racing billets. We see the whole range of this market on a daily basis here at GMS.