Screamin' Eagle Twin Cam Stage III Kit- 103CI to 110CI

Part Number 92500035


Finish / Color: Black Highlighted



Build a fast, reliable 110 cubic inch Twin Cam hauler without having to remove the motor from the chassis. This Stage III Street Performance Kit combines system-matched Screamin' Eagle® big bore cylinders, high compression pistons and performance cams and valve train components with the Original Equipment cylinder heads for a cost-effective boost in torque and performance. The exclusive bolt-on 4.0" cylinders are engineered with slim-wall spigots that slip into the factory crank case without any additional machining.

  • Black highlighted
  • 4" flat top pistons team with stock cylinder heads to produce a performance enhancing 10.2:1 compression ratio
  • High-lift SE-585 cam produces a boost in torque throughout the RPM range
  • Includes 4" bolt-on cylinders, forged 10.2:1 compression pistons and rings, SE-585 cams, perfect fit pushrods, SE high capacity roller tappets, high performance valve springs, heavy-duty clutch spring and a top end gasket kit
  • All EFI-equipped models require dealer-installed ECM calibration download or use of Screamin' Eagle® Street Tuner Kit (priced separately)
  • Recalibration is required for proper installation, See Dealer for details, Labor cost not included
  • Separate purchase of cam spacers is recommended
  • When installed by an authorized Harley-Davidson® Dealer within 60-days of the vehicle purchase, compliant kits do not impact the vehicle's limited warranty

Fits ’16-'17 Softail® and '14-'16 Touring models. Does not fit Trike models, FLSS, FLSTFBS, CVO™ 110 models or models with engine cases that have been machined to accept large-bore cylinders. Requires separate purchase of Cam Drive Retention Kit P/N 25566-06. Cam Spacer Kit P/N 25928-06 is recommended. Twin-Cooled™ models require separate purchase of model-specific head gaskets. All models require recalibration with Screamin' Eagle® Pro Street Tuner (sold separately).

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  • These Screamin' Eagle® products are 50-State U.S. EPA compliant for sale and use on all applicable vehicles, including those that are pollution controlled. See Genuine Motor Parts and Accessories or Screamin' Eagle Accessories catalog for fitment information. Screamin' Eagle Performance products are intended for the experienced rider only.
  • Dealer Install Recommended

  • Warranty

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

  • Sold in Unit

  • In The Box

    SE 4.0" bolt-on cylinders, forged 10.2:1 compression pistons and rings, SE-585 cams, perfect fit pushrods, SE high capacity roller tappets, high performance valve springs, heavy-duty clutch spring and top end and cam cover gaskets
  • Sold Separately

    Click the Fitment tab above for details
  • Upgrade Stage Level

    Stage III
Bolt-On 110 Stage III Street Performance Kit is rated 3.4 out of 5 by 9.
Rated 5 out of 5 by from MadDogWS I put this in almost 2000 miles ago. I also added: Roller Rockers, Rocker Supports, Hi tensil cylinder studs, Hi-Volume oil pump, changed slip ons to SE Street Cannons, and have a V&H X-pipe header. Noise: Only a little noisier than stock, but not a banging noise, just a bit noisier. I had a big increase in HP & TQ. (99/117). The 585 cam is a good streetable cam, with power coming on when I want it all the way through the tach. It is REALLY nice in town when you have to be good, and knows how to behave at 25, 30, 35 mph ... but she knows how to be bad when you twist the throttle. MPG: I have been checking closely, and even though I can drive it into the mid-30's, when I am just cruising it gets 42 - 45 mpg. I have not seen much difference from my stock motor if I keep my wrist in check. The pipes sound fantastic. We spent 2 days on the dyno trying different combinations (my shop is awesome) and went with the best HP/TQ combo we had. I would do this again.
Date published: 2017-05-30
Rated 3 out of 5 by from Knocks and lifter noisy I had this kit installed on my 16 FLTRU at 3500 miles. High flow AC and V&H Pro Pipe. Knocking sounds like spark knock to me and lifters are very loud but getting better. 5000+ miles on the kit now and good performance increase. Dealer told me I needed to change the lifters every 8000 miles. 585 cam is not too aggressive so why the lifter change requirements? Mileage is good IMO for 96hp after dyno run. I wanted a warranty with the kit since we ride 30k plus a year. I'd likely go aftermarket next time for the $5000 I spent on this with under 100hp better results could be had for the cost. I am happy with how it runs just too much engine noise.
Date published: 2017-04-28
Rated 5 out of 5 by from Awesome engine upgrade! I had this SE street performance kit installed about five months ago. My bike gained massive torque and HP. I have a 2016 road glide special. My bike dynoed at 135 lbs of torque and 101 HP. I also have previously upgraded exhaust, headers, and air filter. This kit really woke my bike up! Its the best kit to install without losing the drivability of the bike, you get great torque and hp gains and still maintain the stock riding feel. The tire shredder kit would be an upgrade from this street performance kit. But you tend to lose the smooth drivability of the bike. If you do city riding and like to have a passenger on the back, this kit is perfect. My rear tires definitely breaks loose when I lay into the throttle.
Date published: 2017-04-27
Rated 1 out of 5 by from DON'T BUY! Don't waste your money on this kit!!!! I had this installed on my 2016 Street Glide about a month ago. It has great power but the knocking sound is outrageous!! I've taken it back up to the shop to have them listen to the knocking and they say its normal. Wow Harley....really? What a disappointment!
Date published: 2017-02-25
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  • clientName_harleydavidson

is motor knocking a comon problem

Asked by: DPR911

Is there a 110 kit for the 2016 and 2017 street bob?

Asked by: Bobber84
Hi Bobber84, Currently, there is a Screamin' Eagle Bolt-On 11 Cubic Inch Street Performance Kit--P/N 92500033. Hope this helps!
Answered by: RowdyGrl79
Date published: 2016-10-26

I have seen other sites list the pistons as 10.5:1 but this site says 10.2:1. which is it?

Asked by: Bulldog182

Total HP and Torque?

What is the HP and 'lbs of torque yielded from this upgrade?
Asked by: Vann9741

Do I need to replace the stock exhaust with this kit?

Asked by: TKO2015
Hi TKO2015, Nope, it's not necessary to change out your stock mufflers. Going with S.E. slip-ons would give you a bit more boost in performance, but you definitely don't have to.
Answered by: Rockstar883
Date published: 2016-03-02
  • y_2018, m_2, d_26, h_20CST
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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
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