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Harley Unleashes New 131 Cubic-Inch Milwaukee Eight Crate Engine

It’s an exciting time for v-twin cruiser riders. From Harley-Davidson revamping its Softail lineup a few years back to Indian unveiling its PowerPlus engine found in the all-new Challenger, major manufacturers are answering the customers’ calls for more performance-oriented models. The Motor Company’s latest entry in the displacement wars takes the form of a 131 cubic-inch (2,147cc) crate motor and is the largest engine Harley has ever offered.

The Screamin’ Eagle Milwaukee Eight 131 Crate Engine is a bolt-in replacement for 2017 and later Harley-Davidson Touring models running an oil-cooled or twin-cooled Milwaukee 8. Yes, the name is quite a mouthful, but the 131 Crate Engine might also prove to be a handful with a compression ratio of 10:7:1 and high-flow fuel injectors that feed the beast at a rate of 5.5-grams per second.

While the new motor retains the 4.5-inch stroke found in the 114ci configuration, the 4.31-inch bore cylinders, 64mm throttle body, and high-lift camshaft improve the overall power output. Paired with Screamin’ Eagle Street Cannon mufflers, the engine produces 131 ft-lb of torque and 121 horsepower. While that’s a certifiably absurd amount of torque, the brand also emphasizes the reliability of a factory-built motor.

“Our adrenaline-seeking riders asked for thrilling power and torque with reliability,” said Harley-Davidson Product Manager James Crean. “The Screamin’ Eagle 131 Crate Engine delivers exactly that.”

Of course, there are aftermarket alternatives to the OEM’s upgrade, but none come with the 12-month or 24-month factory limited warranty that Harley offers. At $6,195 for the oil-cooled version and $6,395 for the twin-cooled motor, the assurance of a factory warranty will certainly provide some peace of mind for the costly investment.

Offered in two finishes of black/chrome or black/gloss black, the motor will speak to the inner-bad boy in every cruiser rider. Additional 131 Stage IV badging on the cylinder heads and timer cover also bestows customers with an unparalleled level of street cred. We should call out the fine print that an ECM calibration and Screamin’ Eagle Pro Street Tuner are required for proper installation—so start saving now.

Unfortunately, the Screamin’ Eagle Milwaukee Eight 131 Crate Engine doesn’t meet California noise and emissions standards, so us granola eaters in the Golden State won’t be wrangling Harley’s new monster anytime soon. On the other hand, if your butt dyno no longer registers the pull of your 114ci Milwaukee Eight, the Motor Company has 17 more cubic inches in its back pocket for you!

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