Monster 135ci Factory Crate Engine Revealed

Harley-Davidson has confirmed the production of the largest and most powerful street-compliant crate performance motor ever created. This 2210 cc Screamin’ Eagle Crate Engine delivers an impressive 130 horsepower and 143 ft-lb (194 Nm) of torque and is equipped with 135 Stage IV badging on the cylinder heads and timing cover.

This engine is packed with features, including Screamin’ Eagle Extreme CNC-ported cylinder heads, SE8-517 high-lift cam, high-compression forged pistons, high-performance cam bearing, high-performance tappets, patent-protected 4.31″ steel sleeve cylinders, 4 5/8″ flywheel, 68 mm throttle body and CNC-machined 68 mm intake manifold, 6.2 g/sec fuel injectors, and Screamin’ Eagle Pro-Billet Cam Plate and Oil Pump.

It is designed for easy bolt-in installation of 2021 and later Touring models, with no special fabrication or engine-mount relocation required. However, all models require ECM recalibration with Screamin’ Eagle Pro Street Tuner for proper installation.

In the USA, this mammoth engine is available for purchase complete with up to a two-year manufacturer’s warranty when dealer-installed within 60 days of vehicle purchase through the Custom Coverage program.

Factory Data:

This street-ready performance engine features premium Screamin’ Eagle components:

• New 68mm throttle body and matching CNC-machined intake manifold, originally developed for Harley-
• Davidson Screamin’ Eagle factory racing team engines, to maximize airflow to the engine.
• Screamin' Eagle Extreme CNC-ported cylinder heads provide significantly improved efficiency of cylinder filling, leading to more explosive power and increased rear-wheel torque when compared to stock. High-performance valve springs remain stable with the high-lift cam and in high-RPM operation.
• Screamin' Eagle Pro Billet Cam Plate and Oil Pump provides higher pressure when the oil is hot to keep pressure drops to a minimum.
• New 10.7:1 high-compression forged pistons.
• SE8-517 high-lift camshaft, high-performance cam bearing and high-performance tappets.
• Patent-protected 4.31-inch steel 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 fuel injectors.
• Screamin’ Eagle Ventilator Extreme Air Cleaner and Screamin’ Eagle Street Cannon mufflers (each sold separately) are not required but are highly recommended for peak performance.

The engine will soon be available to Harley-Heaven customers, although the price point has yet to be set. Register your interest today and get to the front of the queue.