Harley Davidson Evolution Heads

Here is a matching set of genuine original Harley-Davidson Evo Evolution Heads.

Harley davidson evolution heads. More stable crank and pistons. 1200 Performer Cylinder Heads for Evolution Sportster have superior flow for maximum power. Retro fitted to any TC engine.

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. When the company wanted a smaller engine to use in its Sportster family the Evolution 883 was the answer. Painting parts needed further explanation So here it is.

Harley Davidson Shovel Heads. This engine is not to be confused with the Sportster Evo same name different engine. The stock valve seats are 1633 ID.

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. Stage Two Evolution Harley-Davidson engines involve any stage one changes plus changes to some internal bolt-on engine components. Most MEGAFLO prepared STDs are.

They are also called Evolution or Evo. SS EVO ported and flowed heads Honda 65 Clone Race Kart Head. 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.

Early Evolution heads were sand-cast in alloy. Nikasil Big Bore Kit Harley Davidson Evo 1340 100. I came accross these two Evolution Heaads.