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 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.
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 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.
