Screamin' Eagle High-Flow Exhaust System with Street Cannon Mufflers

Part Number 64800059


Finish / Color: Chrome



The Screamin’ Eagle® High-Flow Exhaust system provides bolt-on performance by reducing the catalyst restrictions and improving exhaust flow. This exhaust system is optimized for use with Screamin’ Eagle® Stage Kit-equipped Milwaukee Eight engines. The complete exhaust system starts with race-shop constructed oversized mandrel-bent and hand TIG-welded stainless steel head pipes, and flows through a unique crossover to improve the flow of spent cylinder gasses.

  • Chrome
  • Large inlet 4.5" Street Cannon mufflers feature baffles that are optimized for aggressive performance and sound under acceleration, and deliver a rich mellow note
  • Combination of tuned-flow headers and Street Cannon mufflers with relocated catalyst maximizes horsepower, maintains solid midrange torque and manages heat
  • Dial the system to your motorcycle by using the Screamin’ Eagle® Pro Street Tuner to tune your ECM specifically to match your performance upgrades
  • Complete system includes exhaust headers pre-tapped for standard or Screamin’ Eagle® wide-band O2 sensors, large 4.5" diameter Street Cannon mufflers, and matching exhaust heat shields
  • Complete the look with your choice of custom muffler end caps (sold separately)
  • Requires separate purchase of the Screamin Eagle Pro Street Tuner P/N 41000008C

Bike not listed?
Select your year and model to see all the parts that fit your bike.

  • Model
  • 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.
  • Warranty

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

  • Certifications

    50-State U.S. EPA compliant
  • Sold in Unit

  • In The Box

    Exhaust headers pre-tapped, 4.5" diameter Street Cannon Mufflers, matching exhaust heat shields
  • Sold Separately

    Screamin' Eagle Pro Street Tuner, Muffler End Caps
  • Upgrade Stage Level

    Stage I
High-Flow Exhaust System with Street Cannon Mufflers is rated 4.5 out of 5 by 4.
Rated 4 out of 5 by from Nice deep tone, but on the softer side. Installed exhaust with stage II kit, 447 torque cam, koyko inner cam bearing,wide band O2 sensor, smart tune pro, and quick adjust SE pushrods. Exhaust produces a deep full tone that is somewhat soft. If you're looking for ear drum tearing, sharp crackle, this not the exhaust for you. An improvement over stock exhaust for sure though. Install instructions are a little lacking. Some tips, the side bracket (just left of the cam chest) on a 2017 Street Glide does not get reinstalled, as the heat shield for the front cylinder will not fully seat flush with the collector heat shield. Follow the shop manual's instructions for tightening rear cylinder first, then front to prevent exhaust leaks at the rear. Take note of your old exhaust hose clamp direction, instructions are a little vague on the direction of the heat shield host clamps.
Date published: 2018-01-17
Rated 5 out of 5 by from Great looks and not too loud The look is fantastic. More important, I installed with Stage IV part 92500062 and breather part 29400246 for great performance. Haven't been on a dyno but the tech did a nice tune. I can feel huge power. For that money honestly, I was expecting a bit louder pipes. I expected at idle, you would hear that performance cam. Not so. At idle this is not much louder than stock. You can hear it's performance character at higher RPMs. In the end that works for me and my neighbors.
Date published: 2017-08-07
Rated 4 out of 5 by from SE Exhaust I had the Street Canons & the heavy breather put on when I bought the bike. Mistake. I should have put the whole exhaust system put on. The stock head pipe has a catalyst in it and the Street Canons have a catalyst in them too. So today I had the whole system installed. Could not use the first mufflers cause the intake was too small. Looks great but it could have a little more noise. That is why I gave 4 stars. Just my opinion. I'm happy with it. It does sound off when you get into the throttle. I recommend this for the M8.
Date published: 2017-06-20
Rated 5 out of 5 by from SE High Flow Exhaust I had this exhaust system installed on my Ultra Limited along with the Ventilator AC and the Stage III kit. The results were terrific. The dyno showed significant improvement verses Street Canon slip-ons with Stage III mods. This exhaust system compliments the benefits from the engine mods yielding results that give me more torque and power everywhere and it sounds great!
Date published: 2017-05-16
  • y_2018, m_2, d_26, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.7
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_4
  • loc_en_US, sid_PA-18-64800059, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_harleydavidson

Can aftermarket slip-ons be used?

Can I use aftermarket slip-ons with these high flow exhaust headers, such as CFR's or V&H's?
Asked by: CVAMCFTT
I have yet to see aftermarket suppliers offer products for this application. The muffler inlet for this system is not the same size as stock inlets. I have this system on my '17 Ultra Limited and it sounds great.
Answered by: M8rider
Date published: 2017-09-09


Does the High-Flow exhaust void the M8 engine warranty?
Asked by: CVAMCFTT
It does not void the warranty. It is 50 state legal and both EPA and CARB certified.
Answered by: M8rider
Date published: 2017-08-05

noise levels quieter than 17 street cannons slip ons ?

Asked by: freonjocke

Exhaust without mufflers

I bought a 2017 Road Glide Special and added Stage 1 (mufflers, air flow and tuner) like many folks. Can I get the pipes without the mufflers for this upgrade?
Asked by: 2015switchbackCT
I did some research because I was wondering the same thing. Apparently, if you buy only the slip on street cannons, there is no Cat in the pipes; it is in the headpipes. If you buy the full high-flow system, the cat is moved to the street cannons. The slip on street cannons will not fit with the new system; they are intentionally a different size so you won't run the system without a Cat.
Answered by: GFVIII
Date published: 2017-09-23

Can you post a dyno sheet showing the power difference between the stock and the high flow exhaust for touring bikes? Thanks

Asked by: Dave13
  • y_2018, m_2, d_26, h_20CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.7
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_6
  • loc_en_US, sid_PA-18-64800059, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_harleydavidson

Recently Viewed

    Please Hold Your Iron Horses

    You've been sitting idle, so we've ended your session to protect your personal details.

    Continue as guest Sign in
    Online Exclusives

    You’ve been sitting idle, so your session will expire in

    Would you like to remain signed in and continue shopping?

    Yes, keep me signed in No, sign me out

    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.