135 Torque 124 HP Stage Kit

This kit offers the largest displacement available in a Harley-Davidson Stage Kit, utilizing patent-protected cylinder technology for a substantial bolt-on engine upgrade. It includes CNC-ported cylinder heads with larger 1mm valves and precisely machined combustion chambers, alongside high-compression pistons and a high-lift SE8-517 camshaft to enhance performance. The kit's components also include 4.31" steel sleeve cylinders, a 64mm throttle body with a cast manifold, and high-flow 5.5 g/sec injectors, contributing to improved throttle response and exhilarating acceleration. When paired with Screamin' Eagle® Street Cannon Mufflers for 131 kit customers, this kit is rated to produce 135 ft-lb of torque and 124 HP at the rear wheel. This Stage IV kit is compatible with '18-'24 Softail® models equipped with 114CI and 117CI engines. However, specific models and years have additional requirements. The FXFBS requires the purchase of Screamin' Eagle Softail High Flow Exhaust (P/N's 64900828 or 64900829). A Cam Drive Retention Kit (P/N 91800088) is also required. For '18-'19 models, a High-Capacity Oil Pump (P/N 62400247) must be purchased separately. FXDR114 models necessitate the purchase of P/N 65600300. Furthermore, all models require an ECM calibration using a Screamin' Eagle Pro Street Tuner or a dealership-installed Screamin’ Eagle calibration to ensure proper installation and operation. It is important to note that this kit does not fit California models and requires the separate purchase of P/N 92500116A. Harley-Davidson motorcycles modified with certain Screamin’ Eagle® Performance products may be restricted to closed-course competition and are not compliant for sale or use in California on pollution-controlled motor vehicles. A 1-year limited warranty is included.