SCREAMIN' EAGLE^®
STAGE IV KIT

GENERAL Information

Requires Stage III and ECM Tuning

Now that you’ve got the volume, use it the right way. By adding high-flowing ported and matched upper-end components to the bigger engine you can make sure you’re moving as much air and fuel as the engine can take. This stage adds more horsepower to the already impressive Stage III upgrade.

Maximize your horsepower – not the labour. Similar to Stage III, upgrade requires removing the engine’s top end and swapping the cam. The engine remains in the chassis and no machining or custom fitting is required. Special tools and ECM tuning are required.

Engine	Capacity (Cubic Inches)	Part Number
Twin Cam	110 to 117	92500055
Milwaukee-EIght	107 to 114	92500062
Milwaukee-Eight	107 to 128
Milwaukee-Eight	114 to 117
Milwaukee-Eight	114/117 to 131

* Stage IV Kit upgrades available for Air & Oil Cooled engines. Contact our team for correct fitment.

SPECIFICATION & DYNO CHART

Example Shown for Milwaukee-Eight 114 Models

You know the saying "Go big or go home". The Screamin' Eagle Stage IV Kit is no different and offers the largest displacement of any Harley-Davidson Stage Kit.

The 114CI to 131CI Stage IV Kit is designed to deliver maximum horsepower – all the way to the redline and is packaged with patent-protected cylinder technology to allow for the largest bolt-on engine upgrade to any Milwaukee-Eight motor.

This Stage IV Kit features new CNC-ported heads with 1mm bigger valves and fully machined combustion chambers. Coupled with the kit's high-lift SE8-517 cam, high compression pistons and a 64mm throttle body and intake manifold, this combination delivers a thrilling 131 ft-lb of torque and 121 HP rear-wheel output when paired with Screamin' Eagle Street Cannon Mufflers.

It’s designed to run wide open at high-end RPMs and provide a significant boost of torque from cruising speed. You’ll feel the difference as soon as you twist the throttle.

Delivers increased response throughout the entire RPM range
Provides thrilling acceleration when twisting the throttle
Maintains flat torque curve from cruising RPM to redline
Can be installed without removing the engine from chassis
Retains Original Equipment Factory Warranty. Visit www.h-d.com/warranty for more information.

Consult with our customisation specialist for further information.

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