2007 Harley-Davidson FXDSE Screamin' Eagle Dyna - Exclusive Road Test: Big Inch Photo Gallery
2007 Harley Davidson Fxdse Screaming Eagle Dyna Head
Screamin' Eagle heads bump the CVO Dyna's compression to 9.3:1. Each "bathtub" combustion chamber carries a 2.1-inch intake valve flanked by a 1.6-inch poppet on the exhaust side. The standard Twin Cam 96 uses a 1.8-incher on each intake side and 1.6-inch on the exhaust.