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




New product

United States

This Big Bore Kit lets you increase the displacement of your Twin Cam 96™-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, stage I air cleaner with one-piece back plate, top end gasket kit, and heavy duty clutch spring
  • A high performance clutch spring is included to provide the additional clutch capacity required by the extra torque
  • Requires separate purchase of primary cover gasket
  • Street compliant when used with stock mufflers
  • 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

More details


$ 812.30

  • BlackBlack
Available to backorder Extended delivery

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Product Information

IN THE BOXBig bore cylinders, big bore flat top piston assemblies and a stage i air cleaner kit with 1-piece back plate, integral breathers, all mounting hardware, and gaskets
SOLD SEPARATELYPrimary cover gasket
WARRANTY1 year limited warranty - See Customer Service section for details

More info

  • 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.


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

Bike Fitment

Fits all '07 Twin Cam and '08-'11 Softail® models equipped with a Twin Cam 96™ engine. Installation requires separate purchase of Primary Cover Gasket. Cam Drive Retention Kit P/N 25566-06. Cam Spacer Kit P/N 25928-06 is recommended. All models require ECM calibration for proper installation.

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*Fitment details are provided in good faith and do not guarantee suitability for your bike. If in any doubt please contact our parts department before ordering.