Screamin' Eagle High Flow Exhaust System with Street Cannon Mufflers

Part Number 64800043


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 on engines producing 80+ horsepower and works great with Screamin’ Eagle® Stage kits.

  • Replaces the stock head pipe and mufflers with large diameter, freeflowing head pipes and matching mufflers
  • Muffler inlet diameter has been increased to 2.25" to enhance exhaust gas scavenging
  • Catalysts have been relocated to the mufflers to enhance flow
  • Dial system to motorcycle by using the Screamin’ Eagle® Street Performance Tuner to tune ECM specifically to match performance upgrades
  • Proof is in the horsepower and torque numbers
  • Large 4" diameter mufflers are tuned to provide a deep bass exhaust note and a healthy rumble at idle, and that famous H-D® sound throughout the RPM range
  • ECM recalibration is required
  • 50-State U.S. EPA compliant

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  • 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.
  • Material Diameter

    4.0 Inch
  • Warranty

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

  • Sold in Unit

  • In The Box

    Full exhaust header and cross-under tube, left and right 2.25” inlet Street Cannon Mufflers, collector and cross-under exhaust shield, and worm-drive clamps
  • Sold Separately

    Screamin' Eagle 4" endcaps
  • Upgrade Stage Level

    Stage I
High Flow Exhaust System with Street Cannon Mufflers is rated 5.0 out of 5 by 3.
Rated 5 out of 5 by from Great Pipes I had the Screamin Eagle High Flow Exhaust System with Street Cannons and the Screamin Eagle High Flow Air Cleaner Kit installed on my 2016 Road King, along with the requisite ECM calibration. The results are smoother throttle operation, a noticeable increase in torque across the entire rpm range, faster acceleration, smoother deceleration, and an awesome exhaust sound. After the upgrade the exhaust note is not only better, but also balanced between the mufflers. Before the upgrade I was running the 4 inch Street Cannon slip ons with the stock headers, and most of the exhaust was going to the right side muffler. Obviously the exhaust collector on the Screamin Eagle pipes is superior to the stock unit. I would like to thank the very professional staff at Shenandoah HD for a job well done. I would recommend this upgrade.
Date published: 2016-10-07
Rated 5 out of 5 by from Very nice exhaust Clean install and looks great on the bike. Not too loud but has the right rumble... I'm happy.
Date published: 2016-03-22
Rated 5 out of 5 by from This exhaust does it all perfectly. The perfect loudness and tone. Just sounds great to me. I can get on the throttle and not attract every cop in town yet it still sounds great. My new 120ST motor runs perfectly with this exhaust and the SE Street Tuner and there is no heat from the cats that I can notice. Great dual exhaust appearance and it doesn't drag on the road in hard right-hand curves.
Date published: 2016-03-12
  • y_2018, m_2, d_26, h_20
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  • clientName_harleydavidson

The catalytic converters are in each muffler and not the head pipe like the stock exhaust?

Asked by: MountainGoat

Will the High Flow Exhaust System with Street Cannon Mufflers fit a 2016 Road Glide Ultra with a stock 103 and a stage1 intake,

Will the High Flow Exhaust System with Street Cannon Mufflers fit a 2016 Road Glide Ultra with a stock 103 and a stage1 intake? I am interested in this product because it relocates the catalyst's back under the saddlebags to help reduce heat as you have done on the 2017 touring models. Thank you
Asked by: Perculax2

Is this a straight bolt on or would I need a tuner and/or other parts? Can my CPU just be reflashed?

Asked by: wco56
Hey wco56, On a '16 model, with just slip-ons and no air cleaner kit, you don't need a tuner or a re-map. Thanks! Rockstar883
Answered by: Rockstar883
Date published: 2016-09-29

Does this affect my new vehicle warranty or ESP?

Asked by: Scrap

Can this exhaust be used on a 2014 FLHTK with 110 bolt on kit?

Asked by: KPGates
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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.