Harley Davidson Screaminâ' Eagle Stage IV Kit - 117CI to 131CI 92500146

For the rider demanding no-compromise performance. This 117ci to 131ci 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 power to weight ratio. 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 and new patent-protected 4.31" steel sleeve cylinders. Screamin' Eagle and Stage IV badging on the cylinder heads and timer cover highlights the powerplant.

Fits '25 Softail ® models. Requires ECM recalibration with Screamin Eagle ® Pro Street Tuner for proper installation. Does not fit California models.