Harley Davidson Screamin' Eagle Stage IV Kit - 121CI to 135CI
Item Sold In Store Only.
Description.
For the rider demanding no-compromise performance. With the largest displacement and the most power of any Harley-Davidson® Stage Kit, this 121ci to 135ci Stage IV Kit was engineered by the pros at Harley-Davidson to deliver instant arm-stretching torque through the entire rpm range.
Made for riders seeking maximum displacement, compression, and flow, it delivers 144 horsepower and 149 ft-lb of torque to the rear wheel! This Stage IV Kit features the finest Screamin’ Eagle® components. Many of these new components were informed by extensive testing by the Harley-Davidson Factory Racing Team for the King of the Baggers racing series.
The Stage IV kit consists of: All-new Screamin' Eagle® Extreme CNC-ported cylinder heads, 68mm throttle body and new cast 68mm intake manifold, new SE8-550 high-lift cam and 6.8 g/sec fuel injectors work together to feed the engine large volumes of air and fuel to help maximize power. New forged high-compression pistons and rings are designed to withstand increased combustion forces. Also includes high-performance tappets, new patent-protected 4.31" steel sleeve cylinders, and Screamin' Eagle® Pro Billet Cam Plate and Oil Pump. Screamin’ Eagle and Stage IV badging on the cylinder heads and timer cover highlights the powerplant.
• Black Granite
• We’ve done your homework - Engineered and tested as a complete collection of high-performance components by the Screamin’ Eagle® pros at Harley-Davidson
• This combination is designed for wide open throttle along with high end RPMs and a significant torque increase from a cruising speed
• Provides thrilling acceleration when twisting the throttle
• Can be installed without removing the engine from chassis. For models originally equipped with Variable Valve Timing (VVT), VVT will not be retained with this performance Stage IV kit.
• Screamin’ Eagle products are not available for sale and are not street legal in all countries. Please contact your local dealer for more information
Details.
Fits '23-later FLHXSE and FLTRXSE and '24-later FLTRXSTSE models. '23-later FLHXSE and FLTRXSE models require separate purchase of P/N 18400117 and 25400103. Requires ECM recalibration with Pro Street Tuner for proper installation. Does not fit California models.
Installation Instructions
Dealer Install Recommended: Yes
ECM Calibration Required: Yes
Sold Separately: Pro Street Tuner P/N 41001141
Sold In Units: Each
Screamin' Eagle Stage Upgrade: Stage IV
In the Box: See Description above for details
WARRANTY: 1 year limited warranty – Go to www.h-d.com/warranty for full details
Certification:49-State U.S. EPA compliant
Harley-Davidson® motorcycles modified with some Screamin’ Eagle® Performance products must not be used on public roads and, in some cases, may be restricted to closed-course competition. These performance parts are 49-state U.S. EPA compliant but are NOT compliant for sale or use in California on pollution-controlled motor vehicles. California guidelines on tampering can also lead to substantial fines and penalties. Screamin’ Eagle® Performance products are intended for the experienced rider only.
