What Is Harley Stage 4

With all other performance stages completed there is one last upgrade that can help increase your mills ability to move air.

What is harley stage 4. The 114 Torque Cam and 117 Stage 3. The Harley Stage 4 upgrade consists of ported heads and a high performance carburetor or throttle body. In many cases it would include a larger throttle body injectors depending on the specific model.

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

The difference between the standard 103HO and the Stage 4 kit is chalk and cheese. Only one air cleaner is available to fit. Shifting at 5000-5250 is probably the sweet spot in an all out sprint.

Additional supportive mods would be required such as clutch and other upgrades. As the stage kits get higher in number the more parts and labor are involved. Buy your Road King Kong raffle tickets here.

Coupled with the kits high-lift SE8-517 cam high compression pistons and a 64mm throttle body and intake manifold this combination delivers a thrilling 126 ft-lb of torque and. This would be a moderate compression big bore combination. Stage 3 cam being the 498 model and stage 4 being 515 model.

Stage 40 are maximum output heads for an OE casting. It was just what the Dr. It isnt until 4500 RPM that the Stage 4 really comes to life pouring the power on until it redlines at 6500rpm.