Upgrade Performance

Author: More Power & Torque  

Performance Upgrade


Looking for an upgrade to take your Harley-Davidson motorcycle to the next level? Look no further than Morgan & Wacker H-D® and our Screamin' Eagle Performance Upgrades.

A Screamin' Eagle performance upgrade dials up the acceleration, torque, power and sound to a whole new level.

Get ready to unlock the full potential of your HOG with up to 40%* gains in performance when fitting a Stage IV upgrade!

Let us help you make the right choice, contact us today to book your upgrade.

No matter which stage you choose, the Screamin Eagle Performance Upgrade kits are backed by Harley-Davidson's legendary quality and craftsmanship. So why wait? Upgrade your Harley-Davidson today and experience the power and performance you've been looking for.

Upgrade Your Harley

Start the engine to hear how your Harley® could sound!



* For specific performance results refer to the Screamin’ Eagle® Parts & Accessories Catalogue. Declared performance values represent SAE J-1349 transient peak power output. Dynamometer settings, motorcycle condition, variation, climate and other factors can affect performance output and can vary from the performance values declared by Harley-Davidson® Please consult your dealer for details & availability. Stage upgrades retain the Motorcycle Original Equipment Manufacturer’s Warranty. Limited time only - prices subject to change.