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 tunable 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

Fits ’14-later XL1200 models. Requires separate purchase of 58mm compatible accessory air cleaner. All models require ECM calibration for proper installation. '17-later models require recalibration with Screamin' Eagle Pro Street Tuner (sold separately) or dealership installed Screamin’ Eagle calibration.