KIT,PWR PRFM UPGR,128,STAGE4,B

This Stage IV Kit was designed to deliver maximum horsepower u2013 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. Itu2019s designed to run wide open at high-end RPMs and provide a significant boost of torque from cruising speed. Youu2019ll 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 vehicleu2019s limited warranty. Kit includes: CNC Ported Cylinder Heads with CNC machined chamber and 1mm larger valves L93, Stage IV Timer Cover, SE8-517 High-Lift Cam, Forged High Compression Pistons, High Performance Cam Bearing, Tappets, 4.31" Steel Sleeve Cylinders, 64mm Throttle Body and Cast Manifold and High Flow Injectors (5.5 g/sec). Stage IV Kit - 114CI to 128CI for Oil-Cooled models Delivers increased response throughout the entire RPM range Provides thrilling acceleration when twisting the throttle Maintains flat torque curve from cruising RPM to redline Can be installed without removing the engine from chassis Retains Original Equipment Factory Warranty 49-State U.S. EPA Compliant on '17-later Touring models