Looking for a performance kit or engine upgrade to take your Harley-Davidson® motorcycle to the next level? Our Milwaukee-Eight® engine kits are designed to bring out the best in your motorcycle's engine, so you can enjoy all the possible benefits of a full-powered and high-functioning bike! Head down to Barbed Wire Harley-Davidson® in DeKalb, near Chicago, IL today to check out our entire selection of engine kits and upgrades for sale! Have questions? Ask our service and parts staff to give you an idea of what your bike needs!
This kit was developed for the budget-minded rider that wants to experience crisp throttle response and acceleration they can feel at slower speeds. The 5% increase in torque can be felt immediately off the line and continues to build by up to a 14% increase @ 4500 RPM - the ideal power band for passing slow-moving vehicles.
These kits retain original equipment factory warranty and are 50-State US. EPA compliant.
(Exhaust is not included)
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This kit was developed for the budget-minded rider that wants to experience that adrenalin-pumping burst of speed while heading toward the red line. The additional power starts to build @ 3000 RPM and continues to build by up to 24% at redline. Riding the bike aggressively will require downshifting to lower gears to keep the engine operating in the higher RPM range.
These kits retain original equipment factory warranty and are 50-State US. EPA compliant.
(Exhaust is not included)
This Stage IV Kit was designed to deliver maximum horsepower – all the way to the redline. 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 126 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.
Performance components include:
(Exhaust is not included)
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.
Performance Components Include:
(Exhaust is not included)
Leave other riders in the dust with the biggest, most powerful street-compliant crate performance engine Harley-Davidson has ever created. Built from the bottom up in Milwaukee, this street-tuned 131-cubic inch Screamin’ Eagle® Crate Engine is designed to run with a wide open throttle at high engine speeds andprovide instant passing power from cruising speed. Made for riders seeking maximum displacement, compression and flow, it delivers 131 ft-lb of torque tothe rear wheel as soon as the throttle is cranked. Stage IV equipped engine includes 131 Stage IV badging on the cylinder heads and timer cover to highlight the powerplant. Ready for bolt-in installation in the Original Equipment-style chassis of your Touring bike. No special fabrication or engine-mount relocation is required. Engine features one-year manufacturer’s warranty for unmatched confidence. Eligible for coverage under factory vehicle warranty when dealer-installed within 60 days of vehicle purchase.
Designed and tested at the Harley-Davidson® powertrain factory to ensure the highest quality construction, this street-ready performance motor features the finest Screamin’ Eagle components:
Installed Crate engine includes head pipe, tuner, air cleaner, all gaskets and oil.
