Powertrain Operations Plant Tours now available! Buy Tickets
Ready to Ride? Let us sweeten the deal. See Available Offers.
Ready to Ride? Let us sweeten the deal. See Available Offers.
Ride the miles, earn the rewards, and raise money for heroes.30 Learn More
Make sure this part fits
This part fits your .
This part does not fit your 2011 Sportster 1200 Custom.
This part does not fit your .
This part fits your .
You are purchasing for this VIN: .
VIN required for purchase

Screamin' Eagle Milwaukee-Eight Engine Stage IV Kit - 114CI or 117CI to 131CI

$3,974.95
4.13
|
See 8 reviews
Part Number: 92500079
Color: Black Highlighted
Only in stock
Only in stock for pickup

Item Sold In Store Only

View Similar Items

Item is sold out but can be back ordered:

Learn More

Or be notified when back in stock.

Item is not available but can be preordered:

Learn More

Or be notified when back in stock.

Notify me when this item is available.
Item will be sold in-store only.
Add to Cart

Item Limit Error

Pay with on orders over $50. Check your purchasing power

Go big or go home. With the largest displacement of any Harley-Davidson Stage Kit, this 114CI to 131CI Stage IV Kit was designed to deliver maximum horsepower – all the way to the redline. Packaged with patent-protected cylinder technology, it allows for the largest bolt-on engine upgrade to any Milwaukee-Eight motor. Features new CNC-ported heads with 1mm bigger valves and fully machined combustion chambers. Coupled with the kit's high-lift SE8-517 cam, high compression pistons and a 64mm throttle body and intake manifold, this combination delivers a thrilling 131 ft-lb of torque and 121 HP rear-wheel output when paired with Screamin' Eagle Street Cannon Mufflers. It’s designed to run wide open at high-end RPMs and provide a significant boost of torque from cruising speed. You’ll feel the difference as soon as you twist the throttle. When installed by an authorized Harley-Davidson Dealer within 60 days of the vehicle purchase, compliant kits do not impact the vehicle’s limited warranty. Kit includes: CNC Ported Cylinder Head with CNC machined chamber and 1mm larger valves, Stage IV Timer Cover, SE8-517 High-Lift Cam, Forged High Compression Pistons, High Performance Cam Bearing and Tappets, 4.31" Steel Sleeve Cylinders, 64mm Throttle Body and Cast Manifold and High Flow Injectors (5.5 g/sec).

...Read More
Description
Details
Rating Snapshot
5
5
4
1
3
1
2
0
1
1
Quality
Did Not Meet
Exceeded
Showing 1-5 of 8
Reviews
Let us know what you think. Write a review
  • FEATURED REVIEW
    9/14/2024
    114 to 131 stage IV kit install
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    Quality
    Did Not Meet
    Exceeded
    What a difference, WOW night and day When you roll the throttle hang on !!! Glad I had it done Installed at McDermott Harley-Davidson, Fort Ann,NY
    Dennis - Glenville, NY
  • FEATURED REVIEW
    5/1/2024
    Gets the heart pumping
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    Quality
    Did Not Meet
    Exceeded
    Finally got this bad boy installed in my 19 FLHXS and it gets the blood pumping. The sound of the bike with Rinehart slip-ons makes it purr like a kitten. Well I guess a lion is a proper term.
    Huntdawg - Missouri
    • Just got my bike dyno tuned with power vision and was astonished that I'm cranking out at 149 ft-lbs of torque and 133 hp in the 5 rpm range. Definitely an improvement then I was expecting.
      Huntdawg - Missouri
      6/20/2024
  • FEATURED REVIEW
    10/5/2023
    Not overly impressed
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    Quality
    Did Not Meet
    Exceeded
    2023 RG ST with 131 upgrade kit, Pro Street Tuner, and Rinehart 4.5 inch cannons and the best the dealership could get on dyno was 112 HP. Torque was pretty good at 143, but disappointed in the HP number considering it’s not really any better than the stock ST 117 number.
    • User review image
    • They shut down the run way too soon - looks like they got out of the throttle at 4K instead of letting it run up to redline.
      rbernie - NoTexas
      2/10/2024
    • Go to a different dealer or go to a third party source to get a better tune. Ive seen lots of bad tunes from dealers.
      Fred - Nebraska
      1/5/2024
  • FEATURED REVIEW
    2/12/2022
    114to131 road king special 2021
    Featured H-D Dealership - H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    install kit 131ci tuner with box Screamin Eagle Pro Street Tuner Thailand
    • User review image
    san mvagusta - TNR Harley-Davidson of Phitsanulok - Motorcycle: road king
  • FEATURED REVIEW
    4/10/2021
    Rides Like Stock (and it’s great)
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    Road my ‘21 RoadGlide Special home in the rain right after my 131” install. I was a little intimidated but I shouldn’t have been. The bike rides exactly like it did when it was stock. You just don’t have to twist the throttle quite as much. When the ground is dry this thing is a rocket. It’s no modern sport bike but man the 131 makes these big bikes move! read more.
    Jake - Minnesota - Motorcycle: Road Glide Special
Showing 1-5 of 42
Q&A
Be the first to ask a question. Ask a question
  • Question:
    3/29/2025
    What is the largest cam that can be installed in a 23 FLHRX that already has a dealer installed Stage 4 kit without making any other alterations?
    Pawpaw - Keller Texas
    • Answer:
      Hi Pawpaw: Due to the nature of your question, please consult with your local dealership. Thanks
      princessv
      Helpful?
  • Question:
    3/8/2025
    Do you need to use the screaming eagle tuner Or can you use an aftermarket one?
  • Question:
    9/3/2024
    Does this kit come with a oil cooler fan or do I have to purchase separately? I have a 22 Road Glide ST in Vivid Black, do I order the Black Highlighted or Black Granite?
    Twojays - New Mexico
  • Question:
    7/30/2024
    on my 2021 cvo road glide the engine is a gray color does this kit come in that color
    eddie - riverside calif
    • Answer:
      The color for the CVO powertrain is called Black Granite. And yes, we have you covered, you'll want to order the Black Granite 131ci kit, Part Number 92500082.
      SE Performance
      Helpful?
  • Question:
    2/17/2024
    What's the ruff price installed
    Bigger - North dakota
    • Answer:
      Hello Bigger, You will have to see your local dealer for quotes on installs. Thanks Blaze

Buy Online. Pick Up in Store.

Your order can be ready for pickup at your dealer in as little as two hours for in-store stocked items.

H-D Membership

Free to join!  Members get free shipping over $50, points for purchases and access to the H-D App.

2025 Let's Ride Challenge

Through Oct 31st, every mile ridden supports vets.  Join in honoring our heroes.

H-D™ Visa® Card

If instantly approved, use your virtual card today to get a Low Introductory APR and the opportunity to earn $100 in H-D Gift Cards.18

Screamin' Eagle Milwaukee-Eight Engine Stage IV Kit - 114CI or 117CI to 131CI