92500079 Go big or go home. With the largest displacement of any Harley-Davidson Stage Kit, this 114CI to 131CI Stage IV Kit was designed to deliver maximum horsepower - all the way to the redline. Packaged with patent-protected cylinder technology, it allows for the largest bolt-on engine upgrade to any Milwaukee-Eight motor. Features new CNC-ported heads with 1mm bigger valves and fully machined combustion chambers. Coupled with the kit's high-lift SE8-517 cam, high compression pistons and a 64mm throttle body and intake manifold, this combination delivers a thrilling 131 ft-lb of torque and 121 HP rear-wheel output when paired with Screamin' Eagle Street Cannon Mufflers. It's designed to run wide open at high-end RPMs and provide a significant boost of torque from cruising speed. You'll feel the difference as soon as you twist the throttle. When installed by an authorized Harley-Davidson Dealer within 60 days of the vehicle purchase, compliant kits do not impact the vehicle's limited warranty. Kit includes CNC Ported Cylinder Head with CNC machined chamber and 1mm larger valves, Stage IV Timer Cover, SE8-517 High-Lift Cam, Forged High Compression Pistons, High Performance Cam Bearing and Tappets, 4.31" Steel Sleeve Cylinders, 64mm Throttle Body and Cast Manifold and High Flow Injectors (5.5 g/sec). Stage IV Kit - 114CI or 117CI to 131CI for Oil Cooled models.

Harley-Davidson Accessories

These pistons were developed specifically for the Screamin' Eagle Milwaukee-Eight 119CI and 122CI Stage III kits. They increase the compression of the engine and, in combination with these kits, provide an impressive increase in torque and power. Replacement pistons for '17-later Milwaukee-Eight models equipped with Screamin' Eagle 107CI to 119CI Stage III kits. Forged from high-strength aluminum. Precision-manufactured with coated skirts for a tightly toleranced fit and quieter operation. The complete set includes two pistons, rings, wrist pins and clips.

Harley-Davidson Accessories

4.060" Standard Bore. Forged from high-strength aluminum, these 10.5 to 1 ratio pistons feature nickel-plated surfaces for enhanced durability, and a special Teflon coating for improved wear-resistance required for racing applications. These pistons include Titanium SST rings to withstand the stresses seen in racing. Complete kit includes pistons, rings, wrist pins, and clips.

Harley-Davidson Accessories

3-7/8" Standard Bore. These Flat-Top Cast Pistons are designed for use with 3-7/8" Big Bore performance cylinders (1550). Kit includes rings, clips and pins.

Harley-Davidson Accessories

Make your Iron 883 roar. This complete conversion kit will alter the personality of your 883-equipped Sportster model.

K&N Air Filter Oil Aerosol Can

Michelin Scorcher Tire Series - 240/40R18 Blackwall - 18 in. Rear

Motor Co. Timer Cover

Screamin' Eagle 68mm Extreme CNC Ported Intake Manifold