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Screamin' Eagle Milwaukee-Eight Engine Stage IV Kit - 107 to 114CI

$3,074.95
Part Number: 92500062
Color: Black Highlighted
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This Stage IV Kit was developed to deliver maximum horsepower from the Milwaukee-Eight® engine - all the way to the redline. The system-matched combination of larger displacement cylinders, free flowing CNC-Ported cylinder heads and a cam with the highest available valve lift are the starting point to building the perfect engine for the performance junkie. Designed for a high level of flexibility, this package is ideal for riders who like to comfortably cruise at lower rpm but still have plenty of arm-pulling acceleration when you whack the throttle. Kit includes CNC Ported Cylinder Heads with Performance Valve Springs, 64mm Throttle Body, High Flow Injectors (5.5g/s), 4.075" Bolt-On Cylinders, Forged 11:1 High Compression Aluminum Coated Pistons and Rings, SE8-515 Cam, Cam Bearing Upgrade, High Performance Tappets, Multi-layer Coated Head Gaskets, High Capacity Clutch Springs (1200N), High Capacity Clutch Disks and most necessary gaskets and seals.

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Description
Details
Rating Snapshot
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14
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Quality
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Showing 1-5 of 19
Reviews
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  • FEATURED REVIEW
    12/26/2024
    Thumper
    Quality
    Did Not Meet
    Exceeded
    Worth every dime, purchased/dealer installed. Retained RS468 cam, only deviation from kit.
    Mark - Houston, tx
  • FEATURED REVIEW
    3/13/2021
    Great addition
    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
    This kit is fantastic on my 2019 FLSL and I have no complaints other than I wanted to buy the 131 crate and have it put on but the dealer told me Harley would not warranty the bike or eng. Only to find out later it is now available for my bike , WTF HARLEY!!!!
    • User review image
    TrqStr - Tuscumbia, Al - Motorcycle: XL, FLSL
  • FEATURED REVIEW
    4/29/2019
    Great upgrade backed by Harley
    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
    Bought a 2018 Street Glide Special late in the model year. I was impressed with the stock M8 and how solid the bike is at any speed. Dealer had me put 1000 miles on the bike before upgrade install and then a 1000 more before the final tune. Talk about having a hard time hanging on going through the gears. The bike is great( I am not looking for cloud smooth ride, I want solid road feel) and the power is superb. Stock M8 is good, the upgrade makes it perfect for me. The dyno numbers published by Harley were spot on for my build. I would make this purchase again and have zero regrets. read more.
    Doggy dad - Beavercreek, OH - Motorcycle: FLHXS
  • FEATURED REVIEW
    1/30/2019
    No disappointments here!!!
    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
    Bought a new 2017 Road King Special and put the IV kit on about 5,000 miles in. What a difference.! Frederick HD did a great job! Maxed out 129 HP and almost the same in torque. Put close to 10,000miles on the kit with NO issues. Runs like an animal, need to hold on tight when you get on it. Those guys told me I should do the headers along with the exhaust to get the max out of it and they were dead on! Put a set of S&S MK45’s along with the fan assisted oil cooler. Not one complaint here! The guys I ride with struggle to keep up. read more.
    The Situation - Frederick, MD - Motorcycle: 2017 FLHRSX
  • FEATURED REVIEW
    1/7/2019
    Makes a great engine into a mind-bender!
    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
    I've owned Pro Stage IV 103 twin cam engines and they are truly awesome, so I wasted no time when I bought this kit for my new 2018 Road King. My Harley Shop in Frederick Maryland installed it in my new Road King and made an already great bike into a true mind-bending road burner. The torque level is at 117 ft. lbs. @ the wheel with 118 hp. So smooth and solid with a very comfortable ride. I can't wait to take it to the track to find out what it can do in the quarter mile! read more.
    newsrider1130 - Alexandria, Virginia - Motorcycle: 2018 Road King
Showing 1-5 of 20
Q&A
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  • Question:
    8/11/2024
    I need a new set of rings for this 107-114 stage 4 kit. I’m replacing valve springs and rings. Broke a spring under idle now I’m rebuilding top end due to the break. Please send me the part numbers and what valve size and part number please.
    Derail - Yakima Washington
    • Answer:
      Hello. Please reach out to your local dealership for assistance. They should be able to provide you with all the Service Parts required for your build. Thanks!
      SE Performance
      Helpful?
  • Question:
    7/16/2024
    Hello, I hve a 2017 ultra water cooled . Can this kit be used…
    Ricky - Florida
    • Answer:
      Hello, This kit can not be used. Fits '18-'20 Softail and '17-'21 Touring models equipped with air/oil cooled 107CI Milwaukee-Eight engine.
      hockeydad
      Helpful?
  • Question:
    7/21/2022
    what gasket kit do i need for this build. I broke a valve spring and am trying to put my bike back together.
    Billy - Washington
    • Answer:
      Billy Under the details tab, please review "INSTALLATION INSTRUCTIONS" In there you will find "KIT CONTENTS" that contains all the gaskets needed Thanks H9FXE
  • Question:
    6/11/2022
    I have a 2022 Electra Glide Standard. Will the 114 Stage IV kit install onto 2022 M8 107 and does the SE Pro Street Tuner have 114 Stage IV maps available for the 2022 M8 107 FLHT? Thanks for the help!
    BobbyT72 - Tucson
    • Answer:
      Hello Bobby, I'll answer both questions with one answer, no it will not fit because there is no tunes for the bike via the street tuner. Gigglesthehelper
      Gigglesthehelper
      Helpful?
  • Question:
    4/17/2022
    What would be the best exhaust setup to run with this combo. For up and tq.
    Skunkworks - Muskegon mi
    • Answer:
      Skunkworks All of the SE exhaust systems will have very similar output numbers, it comes down to what you like for styling. Thanks H9FXE

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Screamin' Eagle Milwaukee-Eight Engine Stage IV Kit - 107 to 114CI