There is now a Harley-Davidson Screamin’ Eagle 131ci engine kit for selected Softail motorcycles running Milwaukee-Eight 114ci and 117cc motors. The Stage IV Kit creates massive torque and the ability to operate effectively at high rpm. Let’s take a look at the fast facts.

1. Harley-Davidson claims the Stage IV Kit puts out 124 horsepower at the rear wheel, along with 135 ft-lbs of torque. To get there, however, you have to add the Screamin’ Eagle Street Cannon Mufflers.
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https://ultimatemotorcycling.com/2020/10/08/screamin-eagle-milwaukee-eight-131ci-stage-iv-kit-for-softails-8-facts/