What Is Harley Stage 4

Tune a Harley-Davidson Milwaukee-Eight engine to the max with a potent new street-legal Screamin Eagle Milwaukee-Eight Stage IV Kit available now from Harley-Davidson Genuine Motor Parts Accessories.

What is harley stage 4. It comes with the cnc ported factory heads with larger valves and bee hive springs and they flow much better than stock. Delivering a boost in both displacement and air flow through the engine these complete kits were developed to deliver maximum horsepower from the. Nobody says no to more torque and horsepower.

With all other performance stages completed there is one last upgrade that can help increase your mills ability to move air. As the stage kits get higher in number the more parts and labor are involved. This Stage IV Kit was designed to deliver maximum horsepower all the way to the redline.

Stage 3 cam being the 498 model and stage 4 being 515 model. 200 Valves Step Lock Guides special valve seats 516 valve springs allow up to 750 of cam lift. It was just what the Dr.

But higher number stage kits are well beyond just getting a new cam. Features new CNC-ported heads with 1mm bigger valves and fully machined combustion chambers. And for the sake of comparison and to better explain our menu of upgrade options and power gains expected it is worth noting that the most popular engine in the Harley range is the 96 Cube 1600 cc as.

By getting a Harley stage kit you dont have to spend a bunch of time researching and piecing things out. Harley Stage 4 Upgrade The more air your engine can move the more power it can create. Here is the thread on this discussion and he even posted the dyno sheet for it after he was done.

It isnt until 4500 RPM that the Stage 4 really comes to life pouring the power on until it redlines at 6500rpm. The new Screamin Eagle Street Performance Stage 4 Kit 103 Cubic Inches PN 92500011 184995 from Harley-Davidson Genuine Motor Accessories produces the maximum horsepower output for a. He ended up going with a Woods TW 400-6 cam set.