GO BIG or go home!
This Screamin’ Eagle Stage IV kit is designed for maximum power! It enables the biggest bolt-on upgrade for a Milwaukee Eight engine to 131 cui, at 183 Nm and 124 horsepower at the rear wheel – and this, without removing the engine from the frame!
The kits contain everything you need to pimp your engine (varies by kit and model):
CNC machined cylinder heads with CNC machined chambers and larger valves (high performance injectors), forged high compression pistons, high lift camshaft, high performance cam bearings and high performance tappets, steel sleeve cylinders, 64mm throttle bodies with cast iron manifolds, Stage IV timer covers, and many others. Depending on the model, EPA compliant according to 49 US Environmental Protection Agency, without certificate (for racing & show purposes).
Different versions available for Harley-Davidson Touring models and Softails.
Other kits, also for the 107 Milwaukee-Eight engine, are also available. You can find more information in our online shop and from our consultants.
Screamin Eagle Stage IV Kit 131ci black hightlichts
Touring17-later (Oil Cooled 114/117) - Go big or go home. With the largest displacement of any [...]
Price: 4946.90€*
Screamin Eagle Stage IV Kit 131ci black granite
Touring 17-later (Twin Cooled 114/117) - Go big or go home. With the largest displacement of any [...]
Price: 4946.90€*
Screamin Eagle Stage IV Kit 131ci black granite
Touring17-later (Oil Cooled 114/117) - Go big or go home. With the largest displacement of any [...]
Price: 4946.90€*
Screamin Eagle Stage IV Kit 131ci black hightlichts
Touring 17-later (Twin Cooled 114/117) - Go big or go home. With the largest displacement of any [...]
Price: 4946.90€*
Screamin Eagle Stage IV 131 ci Kit black/highlighted
Softail 18-later (114) - Go big or go home. With the largest displacement of any Harley-Davidson [...]
Price: 4739.90€*Some more Screamin' Eagle Stage kits
Screamin Eagle Stage III Kit 119 ci black/highlights
Touring 17-later (107) - This Stage III kit has been developed for the rider looking for a solid [...]
Price: 2547.90€*
Screamin Eagle Stage III Kit 122 ci black/highlights
Touring 17-later (114/117) - This Stage III kit has been developed for the rider looking for a solid [...]
Price: 2547.90€*
Screamin Eagle Stage IV Kit 128ci black/highlighted
Touring ab 17 (Twin Cooled 107) - This Stage IV Kit was designed to deliver maximum horsepower [...]
Price: 4947.00€*
Screamin Eagle Stage IV Kit 128ci black/highlighted
Touring 17-later (Oil Cooled 107) - This Stage IV Kit was designed to deliver maximum horsepower [...]
Price: 4946.90€*
Screamin Eagle Stage IV Kit 128ci black/highlighted
Softail 18-later (107) - Go big or go home. With the largest displacement of any Harley-Davidson [...]
Price: 4739.90€*Contact
You can find Thunderbike Parts and original Harley-Davidson Parts in our online shop.