Maximize the horsepower and torque available for your street-compliant Sportster® model. This complete engine package includes all the components you need to build a high-performance ride while still retaining the original factory warranty.
Black Highlighted Heads
Installation of this Stage IV Street Performance Kit does not require removal of the powertrain from the chassis
Includes CNC-ported cylinder heads with performance valve springs, SE XL SE-585 cams, forged hi-compression 10.5:1 pistons and rings, 58mm throttle body and intake manifold, and top end gasket kit
All EFI-equipped models require dealer-installed ECM calibration download or use of Screamin' Eagle® Street Tuner Kit (priced separately)
Recalibration is required for proper installation, See Dealer for details, Labor cost not included
When installed by an authorized Harley-Davidson® Dealer at the time of vehicle delivery, these kits do not impact the vehicle’s limited warranty