These 4” diameter disc-based Megaphone Series are our signature muffler that utilize our patented Tunable Disc Technology and provide significant horsepower gains. Megaphone Series are SAE-J2825 sound compliant.
Megaphone Slip-Ons are available for ’95 & up Baggers and '09 & up Tri Glides. They provide an 8 - 10% horsepower gain. Megaphone Slip-Ons are compatible with our
True Duals and our Crossover Conversion.
Megaphone 2:1 Systems are available ’91 – ’05 Dynas, ’86 – ’99 Sportster XLH, ’84 – ’94 FXR models and ’71 – ’84 Shovelheads. Does not fit Custom or 883R.
Megaphone 2:2 Systems are available for ’86 – ’99 & ’04 & up Sportster XLH, ’08 & up Sportster XR1200 and ’90 and later Sportster XR750. The 2:2 XR Style system provides a bolt-on 20% horsepower gain.
The classic Megaphone design allows the exhaust gas to expand which increases power. Discs let you control the flow. Optional Open End Caps for closed course competition are also available.
Twelve - 4” discs, a Closed End Cap and all necessary mounting hardware is included with Slip-Ons and the 2:1.
Twenty-four - 4” discs, Closed End Caps and all necessary mounting hardware is included with the 2:2.
Add 4” discs to increase horsepower, exhaust tone and flow.
Subtract 4” discs to reduce sound and increase low-end-torque.
Note: Sound test data on '10 & up model specific slip-ons was achieved using the OEM CAT equipped headpipe. Use of these mufflers on headpipe with the CAT removed or True Duals will result in substantially louder results.
Optional cores are available for certain models at an additional cost.
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Universal Megaphones for Unique Applications
4" Tunable Disc Accessories
Disc Installation Video
Closed End Cap vs. Open End Cap Video
How To Re-Pack a SuperTrapp Exhaust
Megaphone Series Videos
Bagger Slip-Ons Sound Chart
Bagger Slip-Ons dB Levels and Disc Configurations
Click here to read the 2:2 XR Style Race System article in IronWorks Magazine.
Where To Locate Part Number on Pipe
For CARB compliance info, use Find My Exhaust.
Click any Model # for more details.