Harley-Davidson Introduces Screamin’ Eagle 135 Stage IV Crate Engine

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Harley-Davidson has introduced the brand new Screamin’ Eagle 135ci Stage IV Crate Engine for authentic, equipment-style 2021-later Harley-Davidson Touring fashions. Impressed by the Harley-Davidson Screamin’ Eagle King of the Baggers manufacturing facility racing workforce and boasting probably the most displacement ever on an H-D crate engine, the Screamin’ Eagle 135 makes a claimed 130 hp and 143 lb-ft of torque on the rear wheel. MSRP is $7,995.95. For extra info, learn the press launch under from Harley-Davidson.


Harley-Davidson Screamin' Eagle 135ci Stage IV Crate Engine

Milwaukee, WI (March 1, 2023) – Harley-Davidson riders craving no-compromise efficiency have an exhilarating new possibility with the introduction of the Screamin’ Eagle 135ci Stage IV Efficiency Crate Engine. This entire Milwaukee-Eight engine for 2021-later Touring fashions is the brand new benchmark for factory-engineered American V-Twin efficiency, providing probably the most displacement, and probably the most energy, ever created by Harley-Davidson for a street-compliant crate engine.

The engine’s growth was fueled partially by the efforts of the Harley-Davidson Screamin’ Eagle manufacturing facility racing workforce competing within the MotoAmerica Mission King of the Baggers roadracing sequence. To simplify arrange of high-performance engines Harley-Davidson affords the brand new wi-fi Screamin’ Eagle Professional Avenue Efficiency Tuner, the one tuner out there to maximise efficiency whereas being emissions and guarantee compliant.

Commercial

Engineered and examined as an entire assortment of high-performance elements and assembled from the underside up at Harley-Davidson Powertrain Operations in Menomonee Falls, Wisconsin, this street-tuned 135-cubic-inch (2212cc) Screamin’ Eagle Crate Engine is designed to run with a wide-open throttle at excessive engine speeds and supply instantaneous passing energy from cruising velocity. The engine delivers 143 lb-ft of rear-wheel torque at 3500 rpm and 130 rear-wheel hp at 5500 rpm – roughly 28 p.c extra torque and 41 p.c extra horsepower on the rear wheel than a manufacturing Milwaukee-Eight 117 engine.

Harley-Davidson Screamin' Eagle 135ci Stage IV Crate Engine

Associated: Harley-Davidson Declares Screamin’ Eagle 131 Crate Engine For Choose Softail Fashions

This street-ready efficiency engine options the next premium Screamin’ Eagle elements:

  • New 68mm throttle physique and matching CNC-machined consumption manifold, initially developed for Harley-Davidson Screamin’ Eagle manufacturing facility racing workforce engines, to maximise airflow to the engine.
  • Screamin’ Eagle Excessive CNC-ported cylinder heads present considerably improved effectivity of cylinder filling, resulting in extra explosive energy and elevated rear-wheel torque when in comparison with inventory. Excessive-performance valve springs stay steady with the high-lift cam and in high-rpm operation.
  • Screamin’ Eagle Professional Billet Cam Plate and Oil Pump gives increased strain when the oil is sizzling to maintain strain drops to a minimal.
  • New 10.7:1 high-compression cast pistons.
  • SE8-517 high-lift camshaft, high-performance cam bearing and high-performance tappets.
  • Patent-protected 4.31-inch metal sleeve cylinders and new 4 5/8-inch flywheel (bore x stroke is 4.31 x 4.625).
  • New high-capacity 6.8 gram/second gas injectors.
  • Screamin’ Eagle Ventilator Excessive Air Cleaner and Screamin’ Eagle Avenue Cannon mufflers (every offered individually) should not required however are extremely beneficial for peak efficiency.
Harley-Davidson Screamin' Eagle 135ci Stage IV Crate Engine

The Screamin’ Eagle 135ci Stage IV Efficiency Crate Engine is meant for bolt-in set up in an authentic equipment-style 2021-later Harley-Davidson Touring chassis. No particular fabrication or engine-mount relocation is required. The engine is backed by as much as two-year producer’s guarantee for unmatched confidence when dealer-installed via the Customized Protection program.

See all of Rider‘s Harley-Davidson protection right here.

With an MSRP of $7,999.95, the Screamin’ Eagle 135ci Stage IV Efficiency Crate Engine is obtainable in Black or Chrome end with 135 Stage IV badging on the cylinder heads and timer cowl.

Harley-Davidson Screamin' Eagle 135ci Stage IV Crate Engine

Two variations of the engine might be provided: For 2021-later Touring fashions outfitted with Air/Oil-Cooled Milwaukee-Eight engine, and for 2021-later Touring fashions outfitted with a Twin-Cooled Milwaukee-Eight engine. The engine doesn’t match Trike fashions. Set up requires the separate buy of Head Pipe P/N 65600177. Air-Cooled fashions require Oil Cooler Fan Help P/N 62700204 or Fan for Manufacturing facility Oil Cooler P/N 26800195. All fashions require ECM recalibration with Screamin’ Eagle Professional Avenue Tuner for correct set up. Doesn’t match California fashions.

Discover extra info at Harley-Davidson’s web site.

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