Screamin' Eagle Big Bore Stage II Kit For EFI Models - 103 Cubic Inches

Part Number 27543-08

FINAL SALE, NON-RETURNABLE

Finish / Color: Black Highlighted

Quantity:

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The Stage II Big Bore Kit provides the parts you need to increase the horsepower of your EFI-equipped model. The kit increases the displacement of your Twin Cam-equipped model from 96 cubic inches (1584cc) to 103 cubic inches (1690cc).

  • Black highlighted
  • Includes big bore cylinders, big bore flat top pistons and rings, SE-255 cams, stage I air cleaner kit with one-piece back plate, top end gasket kit, and heavy duty clutch spring
  • Separate purchase of cam spacers is recommended
  • Requires separate purchase of primary cover gasket
  • All EFI-equipped models require dealer-installed ECM calibration download or use of tunable Screamin' Eagle® Street Tuner Kit (priced separately)
  • California kits are street compliant on California pollution controlled vehicles when used with Original equipment mufflers
  • 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
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  • These Screamin' Eagle® products are street-legal for sale and use on pollution-controlled vehicles in the state of California.
  • 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.

Note

Installation of automatic or manual compression releases on large displacement engines is highly recommended.

Caution

Installation of California performance kit onto a 49-state model motorcycle or a 49-state performance kit on a California model motorcycle will void manufacturers warranty, as it will not result in a street compliant configuration.

  • Dealer Install Recommended

    Yes
  • Warranty

    1 year limited warranty – Go to www.h-d.com/warranty for full details
  • Requires ECM Calibration

    Yes
  • Sold in Unit

    Each
  • In The Box

    Big bore cylinders, big bore flat top pistons and rings, SE-255 cams, stage I air cleaner kit with one-piece back plate, top end gasket kit, and heavy duty clutch spring
  • Sold Separately

    Cam spacers and primary cover gasket
  • Upgrade Stage Level

    Stage III
Big Bore Stage II Kit For EFI Models - 103 Cubic Inches is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from A BIG difference! I had the version of this kit that is for my 2010 Wide Glide installed by a pro, and I am VERY, VERY happy with the results. The bike makes a lot more power overall, especially in the usable ranges for normal riding and passing. I also added a high-flow air cleaner and a high-flow exhaust system, plus you will need to re-map, and finally I went with manual compression releases, to help the stock starter deal with the extra power. The additional power and improved throttle response the bike has now is outstanding!!!
Date published: 2017-01-20
Rated 5 out of 5 by from Awesme Addition I would recommend this to anyone that wants to get more power from their 96. I put it on my 2011 Heritage and it added over 20 HP to my bike. I have so much power now it is totally awesome. Best money I have ever spent on my bike. I wish I would have went for the 110 kit.
Date published: 2014-03-01
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  • clientName_harleydavidson

103 cu in Stage 2 level of performance, for a 2010 FXDWG?

This 103 cu. in. Stage 2 kit isn't offered for my 2010 FXDWG. What could I add to the FXDWG 103 cu. in. Stage 1 kit to get this Stage 2 level of performance? For example, is it mostly a matter of a hotter cam? Thanks!
Asked by: WideGliderRider

If I purchase this kit will i be able to use the exhaust I have currently on my 2009 FLSTC?

Asked by: bigkayne
You can run stock exhaust, but you won't get the full benefit of the upgrade. The bigger 103 jugs, 255 cam and high-flow air cleaner let in more air and fuel, so you need a less restrictive exhaust system to let it back out, to make "maximum" power. You'll also need to remap the programmer whenever you make these changes. This will re-tune the engine to match the new changes, to make your engine run correctly. I put this same version of the Stage 2 kit on my 96" 2010 Wide Glide and it made a BIG improvement, especially in the usable power bands for normal riding and passing. I also added a compression release to help the stock starter deal with all that power. VERY GLAD I did this kit, and the bonus was it also helps A LOT with more power when riding 2 up.
Answered by: WideGliderRider
Date published: 2017-01-01
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    Prices listed are generally the Manufacturer's Suggested Retail Price (MSRP), excluding taxes and shipping. Prices at local dealerships may vary. All online orders will be fulfilled and shipped by
    Harley-Davidson Motor Company as the agent for the Selling Dealer.