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Screamin' Eagle Street Performance Big Bore Stage IV Kit - 103 Cubic Inches

Part Number 92500011

FINAL SALE, NON-RETURNABLE

Finish / Color:  Black Highlighted

Quantity:

In Stock Online

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This Street Performance kit provides the maximum horsepower output for a legal 103 kit that will maintain the factory warranty.

  • Black Highlighted
  • Includes forged 10.5:1 high compression pistons and rings, SE 58mm throttle body, SE CNC ported cylinder heads, SE-259 cams, perfect-fit pushrods, top end gasket kit, and heavy duty clutch spring
  • Street Performance kit produces 96 hp and 105 lbs-ft of torque
  • All EFI-equipped models require dealer installed ECM calibration download or use of the tunable Screamin' Eagle® Street Tuner Kit (priced separately)
  • Recalibration is required for proper installation, See Dealer for details, Labor cost not included
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Fits 50-state '16-later Softail® (except FLSS, FLSTFBS and FXSE) and '10-later Touring models (except '14-later models with Twin-Cooled engines) equipped with a Twin Cam 103™ engine. Fits 49-state '10-'11 Touring models equipped with a Twin Cam 96™ engine with separate purchase of Screamin' Eagle® 3-7/8" Big Bore Cylinder Kit. '10 FLHX and FLTRX requires dual exhaust. Does not fit Trike models.

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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.

Note

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

  • Dealer Install Recommended
    Yes
  • Requires ECM Calibration
    Yes
  • Warranty
    1 year limited warranty - See Customer Service section for details
  • Sold in Unit
    Each
  • In The Box
    Forged 10.5:1 high compression pistons and rings, SE 58mm throttle body, SE CNC ported cylinder heads, SE-259 cams, perfect-fit pushrods, top end gasket kit, and heavy duty clutch spring
  • Sold Separately
    See your Dealer for details
Rated 4.8 out of 5 by 9 reviewers.
Rated 5 out of 5 by Stage IV Kit a Great Enhancement to the Rushmore Engine Had the Stage IV kit installed during a Biker Build Off event at my dealership. This is a must for the enthusiast that insist on more power with the confidence that the components can be trusted by HD. The Screamin Eagle kit is engineered to work with the 103 engine and bring out the very best the Rushmore has to offer. The Rushmore engine is already an engineering marvel and the enhancement of a Stage IV kit just pushes the envelope to a very manageable and rideable machine. Recommend the dealership installs and have a before and after tuning. Make sure to do a 1000 mile breakend fluid change. I've had my Stage IV for a year without any issues. Check out my Tuning Before and After...documented 116 HP and 116 torque. You will love this Kit!! December 28, 2015
Rated 5 out of 5 by WOW YEPEKIA Installed on my 2013 FLHTK WOW bike's ANGRY so much more FUN to ride from boring 103 ,Everyday going to work nail the throttle getting on the fwy on ramp Danmmm .Stay in their Mirrors Stay in their Ears September 20, 2015
Rated 4 out of 5 by Should come this way from the factory! After decades of riding we decided to go with quieter pipes on our current bike. I figured that if I was taking away the bark I should give it some bite so I installed the street stage 4 and Night stick exhaust. I was hesitant about the increased compression using California pump gas and 259 cams as we predominately are 2 up and loaded down for a few days. We have now put on over 3000 miles and I am very pleased. Yes, as noted in other reviews the engine is noisier at idle and between 2800 and 3200 (maybe I notice more since the exhaust is very quiet). With this set up my dyno shows just above idle the torques is 90 and by 2700 it is above 100 and peaks at 110 at 4800 rpm. HP is around 35 at 2000 RPM and climbs to 111 at 5800 RPM. First club ride we showed up to after the conversion one of our fellow riders looked and said “I see you have the Honda conversion” a little later when we were on some back roads we took off from a stop sign and at the next one his comment was “holy S***t that things a sleeper” . This kit provides a very stable wide power band all the way up. Around town it has gobs of torque with crisp quick throttle response and doesn’t load up. On the open road just twist and go or down shift and really take off. Even using California’s “summer blend” gas there is no pinging or detonating. The only reason I did not rate it a 5 is due to the noise it makes which appears to be and I have been told is normal June 17, 2015
Rated 5 out of 5 by 2014 street glide If you want some serious power this is what you want. I put the stage4 along with rhineharts slipons and headers and got 120hp/123tor. May 6, 2015
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February 1, 2016
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Staten Island, NY
I Ride: 2015 FLHXS
How I Ride: Touring - Solo
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Answer: 
I had my Stage IV Kit installed February of 2015. The Stage IV engine break down and build up was 8 hours of labor. The DYNO Tune to get everything right was 3 hours of labor. Depending on the technician, prepare for at least 10 hours of labor. This also included some items not included in the kit such as the upgraded cam plate and hi flow oil pump. When you decide to make this jump, get everything you want in the engine to keep cost down. Some dealerships will compromise on labor rates when other items are purchased and are part of the original build. Good luck. Thunderbird HD in NM works with their customers to build the bike of their dreams. Great Shop!!!
February 3, 2016
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Veguita, NM
I Ride: FLHXS
How I Ride: Touring - Solo
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September 1, 2015
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Answer: 
Hi MrClean,

Yes, the pistons in this 103 ci Performance Stage 4 Kit are forged.

Thank you for your question.
September 2, 2015
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103 CI upgrade

I have 2008 Crossbones. It currently has a 96 CI, I plan to get the 103 CI upgrade, once I get that will this kit work with that Big Bore kit?
July 3, 2015
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Clarksville, Tn
I Ride: 2008 Softail
How I Ride: Local - Solo
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stage 4 kit

I am looking at a stage 4 kit for a streetglide. My question is what is the difference between a street legal kit and a race kit...the torque curve looks much flatter on the race kit
May 6, 2015
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Nunda, NY
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Answer: 
Hello Tedwilliams09,

There are quite a few differences between the kits. The Street legal kit will meet emissions and is street legal. The Race kit is for race use only and does not meet emissions.
The cams, pistons, bore size, and many other items are different between the 2 kits.

Thank You!
May 6, 2015
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February 1, 2015
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Beaufort, NC
I Ride: 2012 Ultra Limited
How I Ride: Local - With Passenger
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Answer: 
Hi Bennett,

Service rates vary from dealership to dealership. Please see your local dealership to determine this cost.

Thank you for your question,
FXS78
February 12, 2015
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