Screamin' Eagle Stage IV Street Performance Kit

    Part Number 92500042


    Finish / Color: Black Non-Highlighted




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    Maximize the horsepower and torque available for your street-compliant Sportster® model. This complete engine package includes all the components you need to build a high-performance ride while still retaining the original factory warranty.

    • Black Non-Highlighted Heads
    • Installation of this Stage IV Street Performance Kit does not require removal of the powertrain from the chassis
    • Includes CNC-ported cylinder heads with performance valve springs, SE XL SE-585 cams, forged hi-compression 10.5:1 pistons and rings, 58mm throttle body and intake manifold, and top end gasket kit
    • All EFI-equipped models require dealer-installed ECM calibration download or use of tunable Screamin' Eagle® Street Tuner Kit (priced separately)
    • Recalibration is required for proper installation, See Dealer for details, Labor cost not included
    • When installed by an authorized Harley-Davidson® Dealer at the time of vehicle delivery, these kits do not impact the vehicle’s limited warranty


    • Dealer Install Recommended

    • Warranty

      1 year limited warranty – Go to for full details
    • Requires ECM Calibration

    • Sold in Unit

    • In The Box

      CNC-ported cylinder heads with performance valve springs, SE XL SE-585 cams, forged hi-compression 10.5:1 pistons and rings, 58mm throttle body and intake manifold, and top end gasket kit
    • Sold Separately

      58mm compatible accessory air cleaner
    • Upgrade Stage Level

      Stage IV


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    • These Screamin' Eagle® products are 50-state street-legal for sale and use on all vehicles, including those that are pollution controlled. Complies with the requirements of 40 CFR Part 86, subparts E and F.


    Stage IV Street Performance Kit is rated 3.8 out of 5 by 4.
    Rated 5 out of 5 by from Great! Installed this myself i used s&s quickee pushrods and premium lifters instead of what was recommended. also subbed the the se-575 cams for these 585's that are included in the kit. love it. less noise with adjustables vs stock rods.
    Date published: 2017-05-21
    Rated 3 out of 5 by from So-So I'm not thrilled with the kit so far. I have 1000 miles into the stage 4 on a '16 Roadster. It is definitely quicker, and pulls harder. I still have on the stock pipe, and only the downloaded tune. The install requires new pushrods. The kit doesn't come with it. The mechanics didn't know about it until half way through the install. Luckily, they pushed for HD to pay for it. If pushrods are required, they should be included in the kit. The lifter noise is really ridiculous on it. It is embarrassing. I had a Ducati pull up next to me, and he looked over at the bike as it was louder than his dry clutch. Lots of people have made comments about the lifter noise. I'm going to take it back to the dealership to hopefully get something done about it.
    Date published: 2016-07-18
    Rated 3 out of 5 by from Lifter noise with Stage 4 kit Dealer, with calls to Harley Tech could not stop lifter noise on my new 2016 Roadster. Replaced hi capacity lifters with standard lifter and the difference is Barely noticeable.
    Date published: 2016-06-19
    Rated 4 out of 5 by from I'm scared of my bike now. The sound is wonderful and it provides plenty of torque. The guys at Haley Augusta got it installed in about a day. All together with installation I paid a little over 3k. That's not a lot for what you get.
    Date published: 2015-11-22
    • y_2018, m_2, d_26, h_20
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    Q & A

    COmpatibility with pre-2014 version

    Hello, Can you short describe why the compatibility stop before 2014 ? What should be done to set compatible a 2012 sportster version ? Kind regards
    Asked by: Emualliug

    Lifter Noise

    Hello, Does the lifter noise is really extreme as said in reviews ? And if yes, don't you find a way to decrease that noise ?
    Asked by: Emualliug
    No solution for noise reduction from Harley. I took it to an independent mechanic. He said the noise is at the upper limit of normal. It does not bother me. The performance is awesome. If enough complain and Harley is not selling the kits, perhaps they will develop a solution.
    Answered by: Dshaw10
    Date published: 2016-10-22

    58mm compatible accessory air cleaner ?

    Hello, Where can we find 58mm Air Cleaner for sportster ? I didn't see any product (or cannot find easily) on the web site. Thanks.
    Asked by: Emualliug
    Hey There, We advise you to please contact your local dealer in regards to your inquiry. Best Regards, The H-D Online Store Customer Service Team Harley-Davidson Motor Company
    Answered by: Rockstar883
    Date published: 2017-10-31
    • y_2018, m_2, d_26, h_20CST
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