What Is Harley Stage 4

He had just bought a heritage with a SE Stage 4 103 and found that it was too soft on the bottom also.

What is harley stage 4. Harley Stage 4 Upgrade The more air your engine can move the more power it can create. This kit makes 105-110 hp and 110-115 ft lbs on a consistent basis straight out of the box without a great exhaust. As the stage kits get higher in number the more parts and labor are involved.

Only one air cleaner is available to fit. So before you opt for one of our legendary Stage 1 2 or 3 Full House Harley upgrades be sure you know what it is you want when it comes to the performance of your Harley-Davidson. It includes headwork and more cam than a Stage 3.

This would be a moderate compression big bore combination. He ended up going with a Woods TW 400-6 cam set. The cam in the stage 3 kit is a lower duration cam intended for more midrange where the stage for kit cam is intended for more higher rpm power.

Stage 40 are maximum output heads for an OE casting. That is the Stage 4 upgrade. Max flow design for big displacement engines with large airflow demand.

He is referring to the cams included in the se. Delivering a boost in both displacement and air flow through the engine these complete kits were developed to deliver maximum horsepower from the. This Stage IV Kit was designed to deliver maximum horsepower all the way to the redline.

The Harley Stage 4 upgrade consists of ported heads and a high performance carburetor or throttle body. It comes with the cnc ported factory heads with larger valves and bee hive springs and they flow much better than stock. The larger valves are completely un-shrouded in the.