A Whopper Engine Option for Harley Tourers
In exactly the way the Rocket III follows the bigger is better ethos, Harley-Davidson now offers street riders a performance option with the release of the Screamin' Eagle Milwaukee-Eight 131 Crate Engine. It’s designed as a performance replacement for the Touring motorcycle models, one version of which substitutes for the Milwaukee-Eight oil-cooled mill and another for the twin-cooled engine.
The 131 cubic inch V-Twin (2147cc) is the biggest and most powerful engine Harley-Davidson has ever created for street use, providing “a significant boost of torque from cruising speed”. We’ve not encountered a V-twin displacing over 2000cc before.
"Our adrenaline-seeking riders asked for thrilling power and torque with reliability," said Harley-Davidson Product Manager James Crean. This street-ready performance engine combines the 4.5-inch stroke of the Milwaukee-Eight 114 engine with new 4.31-inch bore cylinders. Milwaukee-Eight Extreme Ported four-valve cylinder heads are CNC-ported and fitted with 1mm larger-diameter valves to optimise air/fuel flow. Also featured are fully machined combustion chambers shaped to optimise combustion efficiency. The engine updates are rounded out 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 injectors. The result is 90kW of power at the rear wheel, complemented by 178Nm of torque.
The engine, which features 131 Stage IV badging, is available in Black and Chrome or Black and Gloss Black. It carries a 24-month limited warranty when installed by an authorised H-D Dealer within 60 days of vehicle purchase. Otherwise it is backed by a 12-month limited warranty.
Excluding fitment, the 131 Crate Engine costs $NZ11,299 for the oil cooled variant, and $11,665 for the Twin-Cooled version. While it will replace engines in Touring models produced in 2017 and onwards, it will not be a replacement for the Trike mill. All models require ECM recalibration with Screamin' Eagle Pro Street Tuner for proper installation.
The 131 Crate engines become available from March 2020 locally.