Screamin Eagle 131 Performance Crate Engine

Screamin’ Eagle® Performance Crate Engines

Street-Tuned Performance

Leave other riders in the dust with the biggest, most powerful street-compliant crate performance engine Harley-Davidson® has ever created.

NEW! Screamin’ Eagle® 135 Crate Engine

  • 135 Inches of Muscle

    135 Inches of Muscle

    Accept no compromise. Get the most displacement, and the most power, ever created by Harley-Davidson for a street-compliant crate performance engine. Engineered and hand crafted by the pros at Harley-Davidson using a complete collection of Screamin’ Eagle® high-performance components, this street-tuned 135-cubic-inch Screamin’ Eagle® Crate Engine is designed to run with a wide-open throttle at high engine speeds and provide instant passing power. Backed by a two-year warranty and ready to bolt into your Touring bike. Muscle up.

  • Screamin Eagle 135 Performance Crate Engine Dyno Chart

    Unrelenting Performance

    For the rider demanding for no-compromise performance. This street-tuned 135-cubic-inch Screamin’ Eagle® Crate Engine delivers 143 ft-lb of torque to the rear wheel as soon as the throttle is cranked.

Additional details

  • Engraved CNC-ported cylinder heads with CNC-machined chambers and 1mm larger valves

  • SE8-517 high-lift cam, forged 10:7 high-compression pistons, high-performance cam bearing and high-performance tappets

  • Patent-protected 4.31" steel sleeve cylinders & 4.625” flywheel (Bore x Stroke)

  • 68mm throttle body and Extreme CNC-machined manifold

  • Screamin’ Eagle Pro Billet Cam Plate & Oil Pump

  • 6.8 g/sec fuel injectors

  • Ready for bolt-in installation in the Original Equipment-style chassis of your ’21-later Touring bike

  • Engine features one-year manufacturer’s warranty for unmatched confidence

  • Factory assembled at the Powertrain Operations facility in Milwaukee, Wisconsin

Explore options

Screamin' Eagle Milwaukee-Eight 135 Performance Crate Engine - Air/Oil Cooled

Air/Oil-Cooled with Black and Chrome Finish

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Screamin' Eagle Milwaukee-Eight 135 Performance Crate Engine - Air/Oil Cooled

Air/Oil-Cooled with Black Finish

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Screamin' Eagle Milwaukee-Eight 135 Performance Crate Engine - Oil Cooled

Twin-Cooled™ with Black and Chrome Finish

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Screamin' Eagle Milwaukee-Eight 135 Performance Crate Engine - Twin-Cooled

Twin-Cooled™ with Black Finish

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Screamin’ Eagle® 131 Crate Engine

  • Screamin Eagle 131 Performance Crate Engine Video Overview

    Screamin' Eagle® Milwaukee-Eight® 131CI Performance Crate Engine

    Built from the bottom up in Milwaukee, this street-tuned 131-cubic-inch Screamin’ Eagle® Crate Engine is designed to run with a wide open throttle at high engine speeds and provide instant passing power from cruising speed. Available in Oil-Cooled and Twin-Cooled™ configurations and in Chrome or Gloss Black finishes.

  • Screamin Eagle 131 Performance Crate Engine Dyno Chart

    Feel the rush of pure performance

    Made for riders seeking maximum displacement, compression and flow, it delivers 131 ft-lb of torque to the rear wheel as soon as the throttle is cranked.

Additional details

  • Engraved CNC-ported cylinder heads with CNC-machined chambers and 1mm larger valves

  • SE8-517 high-lift cam, forged 10:7 high-compression pistons, high-performance cam bearing and high-performance tappets

  • Patent-protected 4.31" steel sleeve cylinders & 4.5” flywheel (Bore x Stroke) 

  • 64mm throttle body and cast manifold

  • 5.5 g/sec fuel injectors

  • Ready for bolt-in installation in the Original Equipment-style chassis of your ’17-Later Touring bike

  • Engine features one-year manufacturer’s warranty for unmatched confidence

  • Factory assembled at the Powertrain Operations facility in Milwaukee, Wisconsin

Explore options

Screamin' Eagle Milwaukee-Eight 131 Performance Crate Engine - Oil Cooled

Oil-Cooled with Black and Chrome Finish

Shop Now

Screamin' Eagle Milwaukee-Eight 131 Performance Crate Engine - Oil Cooled

Oil-Cooled with Black and Gloss Finish

Shop Now

Screamin' Eagle Milwaukee-Eight 131 Performance Crate Engine - Twin-Cooled

Twin-Cooled™ with Black and Chrome Finish

Shop Now

Screamin' Eagle Milwaukee-Eight 131 Performance Crate Engine - Twin-Cooled

Twin-Cooled™ with Black and Gloss Black Finish

Shop Now

  • More Screamin' Eagle® Performance Products

    More Screamin' Eagle® Performance Products

    Power that moves you

    Revolutionize your ride to keep the thrills rolling mile after mile. High-flow exhaust kits, performance cams, ultra-powerful Screamin’ Eagle® engines and a complete line of upgrades get you to peak exhilaration quickly and smoothly with the power to handle whatever comes. Conquer the road ahead with Screamin’ Eagle® Performance Products.