Screamin’ Eagle 131 crate motor for select Softail models, 124hp, 135ft-lbs, $9,764.92

The biggest, most powerful street-compliant engine Harley-Davidson has ever created available for select Softail models. The Screamin’ Eagle 131 engine combines the 4.5-inch stroke of the Milwaukee-Eight 114 engine with new 4.31-inch bore cylinders.

The Screamin’ Eagle 131 (2151cc) is a bolt-in replacement engine for select 2018-later model Harley-Davidson Softail motorcycles originally equipped with a Milwaukee-Eight engine (following on from the earlier released 131 kit for touring models), designed to run at high rpm and to provide a significant boost of torque from cruising speed.

Screamin’ Eagle released a 121hp motor for the Touring range back in February.

This street-ready performance engine features H-D’s finest Screamin’ Eagle® components:

The Screamin’ Eagle 131 engine combines the 4.5-inch stroke of the Milwaukee-Eight 114 engine with new 4.31-inch bore cylinders with a patent-protected design. Milwaukee-Eight Extreme Ported four-valve cylinder-heads are CNC-ported and fitted with valves 1mm larger in diameter than the previous generation to enhance 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 135 ft-lb of torque and 124hp at the rear wheel when paired with Screamin’ Eagle® Street Cannon mufflers.

Each Screamin’ Eagle 131 engine is detailed with 131 Stage IV badging on the cylinder-heads and timer cover. The engine is available in a choice of two finish treatments to match original motorcycle styling or a custom direction – Black and Chrome or Black and Gloss Black.

The Screamin’ Eagle 131 engine is eligible for Custom Coverage™ Extended Limited Warranty to run concurrent with the remainder of the motorcycle’s factory 24-month manufacturer’s warranty. The engine must be purchased and installed by an authorised H-D Dealer within 60 days of vehicle purchase to qualify for the Custom Coverage and is otherwise backed by a 12-month factory limited warranty when installed by an authorised H-D Dealer.

The Screamin’ Eagle Milwaukee-Eight 131 Crate Engine ($9,764.92 AUD, 11,480.73 NZD) fits select 2018-later Softail motorcycles. All models require additional purchase of ECM recalibration with Screamin’ Eagle Pro Street Tuner for proper installation. See an authorized Harley-Davidson® dealer for fitment details. Complete fitment information can also be found on H-D.com.