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Harley Screamin’ Eagle Kits for Softails and Baggers

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The all-new Harley-Davidson Screamin’ Eagle products for Softails and baggers keep the thrills rolling mile after mile. High-flow exhaust kits, performance cams, ultra-powerful Screamin’ Eagle engines and more get you to peak exhilaration.

Screamin' Eagle
Screamin’ Eagle 131ci V-twin for Softails

Screamin’ Eagle Stage IV Kit 114ci to 131ci for Select Softails

With the largest displacement of any H-D Stage Kit, Harley designed this 114/117CI to 131CI Stage IV Kit for maximum horsepower for select Milwaukee-Eight Softail models. It allows for the largest Harley-Davidson bolt-on engine upgrade to any Milwaukee-Eight motor.

screamin' eagle m8 softail

The Stage IV Kit features new CNC-ported heads with 1mm bigger valves than the previous generation. I also sports fully machined combustion chambers. The kit also delivers a reported 135 ft-lb of torque and 124 HP rear-wheel output when paired with Screamin’ Eagle Street Cannon Mufflers. It’s designed to run at high-end RPMs and provide a significant boost of torque from cruising speed.

The kit is also eligible for Custom Coverage under the motorcycle’s factory 24-month vehicle limited warranty. That is, when dealer-installed by an authorized H-D Dealer within 60 days of vehicle purchase. It’s otherwise backed by a 12-month limited warranty.

Performance Components Include:

  • Screamin’ Eagle CNC Ported Cylinder Head with CNC machined chamber and 1mm larger valves than previous generation
  • 131 Stage IV Timer cover
  • SE8-517 High-Lift Cam
  • Forged 10.7:1 High Compression Pistons
  • Screamin’ Eagle High Performance Cam Bearing, High Performance Tappets, 4.31″ Steel Sleeve Cylinders, 64mm Throttle Body and Cast Manifold, and High Flow Injectors (5.5 g/sec)

Complete fitment information can be found on H-D.com.

Screamin' Eagle stage III and IV kits

Screamin’ Eagle Milwaukee-Eight Stage IV Kit – 107ci to 128ci for Softails

Harley-Davidson designed this Stage IV Kit to deliver maximum horsepower for select Softail models too. It features new CNC-ported heads with 1mm bigger valves than the previous generation and fully machined combustion chambers.

This combo of high-performance parts delivers a claimed 127 ft-lb of torque and 124 HP rear-wheel output when paired with Screamin’ Eagle Street Cannon Mufflers. It’s designed to run at high-end RPMs and provide a significant boost of torque from cruising speed.

The kit is also eligible for Custom Coverage under the motorcycle’s factory 24-month vehicle limited warranty. That is, when dealer-installed by an authorized H-D Dealer within 60 days of vehicle purchase. It’s otherwise backed by a 12-month limited warranty.

Performance components include:

  • Screamin’ Eagle CNC Ported Cylinder Head with CNC machined chamber and 1mm larger valves than previous generation
  • 128 Stage IV Timer cover
  • SE8-517 High-Lift Cam
  • Forged 10.7:1 High Compression Pistons
  • Screamin’ Eagle High Performance Cam Bearing, High Performance Tappets, 4.31″ Steel Sleeve Cylinders, 64mm Throttle Body and Cast Manifold, and High Flow Injectors (5.5 g/sec)

Complete fitment information can be found on H-D.com.

Milwaukee-Eight Engine Stage III 114ci or 117ci to 122ci Kit and Stage III 107ci to 119ci For MY17+ Touring Models

Harley developed this Stage III kit for the riders seeking a solid “seat of the pants” torque increase. The bump up in displacement and compression delivers a significant increase in torque and power over stock.

The Stage III 107CI to 119CI upgrade delivers up to 23% more horsepower and 17% more torque. Meanwhile, the 114CI to 122CI upgrade increases power by up to 15% and 13% more torque over stock.

Performance Components Include:

  • Screamin’ Eagle 4.155 Big Bore Bolt-On Cylinders
  • Forged 11.0:1 High-Compression Pistons and Rings
  • Screamin’ Eagle SE8-447 Torque Cam, High Capacity Tappets, High Performance Cam Bearing, and Stage III Timer Cover & Insert
  • Multi-layer coated Head Gaskets
  • Cylinder Base and Cam Cover Gaskets
  • Most necessary gaskets and seals

The kit is also eligible for Custom Coverage under the motorcycle’s factory 24-month vehicle limited warranty. That is, when dealer-installed by an authorized H-D Dealer within 60 days of vehicle purchase. It’s otherwise backed by a 12-month limited warranty.

Stage III and IV Kits comply with noise and emissions standards in all U.S. states other than California on 2017-later Touring Models and select 2018-later Softail Models. All models require additional purchase of ECM recalibration with the Screamin’ Eagle Pro Street Tuner for proper installation. See an authorized Harley-Davidson dealer for details.

 

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