IT’S coming. Harley-Davidson Australia has confirmed the biggest, most powerful, street-compliant engine they’ve ever built will be available as a crate engine in Australia and New Zealand from March 2020.
Power-hungry street riders will have access to the Screamin’ Eagle 131 engine, which can be fitted to touring models built from 2017 onwards (but not Trike models). It’s a bolt-in replacement for the Milwaukee-Eight oil-cooled or twin-cooled power plant too.
Providing a significant boost in torque for cruising speed, and designed to run at high RPMs, the new motor combines the 4.5-inch stroke of the Milwaukee-Eight 114 engine with new 4.31-inch bore cylinders with a patented design.
“Our adrenaline-seeking riders asked for thrilling power and torque with reliability,” Harley-Davidson product manager James Crean said. “The Screamin’ Eagle 131 Crate Engine delivers exactly that.”
Developed by the Screamin’ Eagle performance team and factory-assembled at Harley-Davidson Powertrain Operations to ensure the highest quality standards, this high-performance engine is genuine Harley-Davidson, according to Crean.
Milwaukee-Eight Extreme Ported four-valve cylinder heads are CNC-ported and fitted with 1mm larger-diameter valves to optimise air/fuel flow and velocity and feature fully machined combustion chambers shaped to optimise combustion efficiency.
The engine is completed with a high-lift SE8-517 camshaft and high-performance cam bearing, high-compression (10.7:1) forged pistons, a 64mm throttle body and intake manifold, and high-flow (5.5-grams per second) fuel injectors.
It’s a combination that produces 178Nm of torque and 121hp (89kW) at the rear wheel.
Each Screamin’ Eagle 131 engine is detailed with 131 Stage IV badging on the cylinder heads and timer cover, and is available in a choice of two finishes to match original motorcycle styling or a custom direction – Black and Chrome or Black and Gloss Black.
It’s eligible for custom coverage under the motorcycle’s factory 24-month vehicle limited warranty when dealer-installed by an authorised H-D Dealer within 60 days of vehicle purchase and is otherwise backed by a 12-month limited warranty.
The Screamin’ Eagle Milwaukee-Eight 131 crate engine will be available for oil cooled setups for $9,610 AUD or $11,299 NZD, or $9,920 AUD / $11,665 NZD for twin-cooled models. The price excludes fitment.
Installation may require the separate purchase of additional components, depending on your motorcycle model. All models require additional purchase of ECM recalibration with Screamin’ Eagle Pro Street Tuner for proper installation.
See your local Harley-Davidson dealer for more information.