Harley Davidson Evolution Heads

Contrary to what many performance shops try to tell you we were able to break the 90 horsepower mark without larger valves porting and polishing the Evolution heads.

Harley davidson evolution heads. The newly designed Harley-Davidson Evo engine relied on aluminum heads and cylinders - as opposed to the heavy cast iron parts of the Shovelhead their previous Big Twin bike V-Twin engine and other predecessors such as the Sportsters Ironhead engine led to a light weight engine with improved air-cooling efficiency. Head Modifications for the Discriminating Harley Enthusiast I offer a myriad of custom Harley Davidson cylinder head preparation levels each with numerous options to meet with your individual requirements. Harley Davidson Evolution Heads Thermal Coated Heads Pistons.

The dirty one is stock and the one that has been blasted has some work done on it. It was made in the 1340 cc displacement for Harley-Davidson Big V-twins bikes replacing the Shovelhead engine until 2000 when the last EVO was placed in a production factory custom FXR4. Kawasaki Vulcan 1470CC Heads.

Kawasaki 600 fully ported cylinder heads. Stage Two Evolution Harley-Davidson engines involve any stage one changes plus changes to some internal bolt-on engine components. Harley-Davidson Evolution engene Disassembly and Re-assembly - YouTube.

When the company wanted a smaller engine to use in its Sportster family the Evolution 883 was the answer. Dennis Kirk has been the leader in the powersports industry since 1969 so you can rest assured that we have your back when it comes to bringing you the best Cylinder Heads for your Harley-Davidson. Painting parts needed further explanation So here it is.

Not only that but we have them all in-stock and ready to ship to you today. Includes 1051 forged pistons pins clips rings aluminum nickel-silicon carbide plated 3875 inch bore SILVER finish cylinders and head and base gaskets for Harley Davidson Big Twin Evolution 1340cc. Fully ported Hayabusa head.

We see the whole range of this market on a daily basis here at GMS. We achieved 954 horsepower at the rear wheels using un-ported Harley-Davidson 1340 heads and increasing the compression with domed pistons. Contrary to popular myth serious power can be made with stock Harley-Davidson heads without reshaping the combustion chambers polishing the ports and combustion chamber using a larger intake valves or making.