Boosting Power with Harley Davidson 103 Motor Upgrades
If you're looking for more grunt, harley davidson 103 motor upgrades are the best way to wake up that Twin Cam and make it run the way it should have from the factory. The 103 is a solid, reliable engine, but because of all those pesky EPA regulations, it usually feels a bit "choked out" when you first get it. It's got the displacement, but it needs a little help to actually move. ...