Screamin' Eagle Stage IV Street Performance Kit

    Part Number 92500041


    Finish / Color: Black 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 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 1.0 out of 5 by 2.
    Rated 1 out of 5 by from Stage 4 kit should be standard This Sportster Stage 4 kit should be standard equipment on all 1200 Sportsters. For the price of these bikes it only makes sense for them to have more power. It would not cost any more money manufacturing wise to have these parts stock.
    Date published: 2017-02-11
    Rated 1 out of 5 by from 2014 48 w/ 2000 miles, needed new cylinders?! I purchased this kit through Harley Davidson of Fargo, ND. I was told by the service department I'd need a new cylinder, since mine was "out of spec". It's a 2014 Sportster 48 with 2038 miles on it. Being properly broke in, how could it need new cylinders already? +$600 to the bill (for a pair of cylinders after tax.). 3 weeks later and Harley Davidson of Fargo, ND still has not completed this "bolt on" kit. Seems so quick and simple when doing the 103 to 110 kits. Very disappointed in this experience, especially for the price. I have the SE Tuner and full exhaust as well. Should be simple for the master techs to complete. I have thousands in to my bike, and I am impressed with every GENUINE H-D part I have purchased. (grips, pegs, passenger matching pegs, suspension, exhaust, caps, headlight, rack, etc.) This is not a biased review, just the truth.
    Date published: 2016-08-25
    • y_2018, m_2, d_26, h_20
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    • clientName_harleydavidson

    Q & A

    Will my existing aircleaner fit on?

    I have a SE high flow air cleaner wondering if we will need to buy a new one and if so, are they any available yet?
    Asked by: Captabie
    Hey There! If you have a SE Heavy Breather Air Cleaner, Part Number 29400227 or 29400228, it is compatible with the Stage IV Street Performance Kit but because of the 58mm Throttle Body it will then make the kit for race application only. If you have Air Cleaner 29264-08 or 29080-09, those will only work with your OE Throttle Body and will not be compatible with the Stage IV Kit.
    Answered by: jessica5377
    Date published: 2015-09-09
    • y_2018, m_2, d_26, h_20CST
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