SE Series Slip-Ons, also commonly known as the old H-D Performance II Muffler, are available for ’95 & up Baggers, '09 & up Tri Glides and ’97 – ’07 Softails.

SE Series are SAE-J2825 sound compliant.

The newer SE Series (P/N 128-65117) were developed specifically for ‘10 & up FLH / FLT models. The ‘10 & up stock head pipes were redesigned by the factory and these new SE Slip-Ons produce that signature SE sound on the new bikes.

SE (P/N 128-65119) are also available for the 2010 Road Glide (FLTR) and Street Glide (FLHX). These slide onto the OEM 2 into 1 with ease.

Champion of numerous magazine shootouts with a 10-12% hp gain.

Steady, tough, low rumble at 3dB over stock..

Constructed with steel, chrome-plated shells, mild steel core and double walls to keep it bluing-free.

Race-proven baffle increases torque and horsepower and a unique internal baffle heat shield design which completely eliminates body bluing. The original construction of SE Series is not rebuildable / repackable. However, utilizing our optional, replacement core (p/n 100-7801) with the SE Series then allows your muffler to become serviceable by having the ability to be rebuilt and repacked.

Left and right hand bodies allow SuperTrapp logos to be displayed or hidden.

Compatible with a variety of 15 end caps which are sold separately.

All end caps also fit Kerker Slip-Ons and Systems as well as H-D Performance II Mufflers. End caps are sold separately.

SE Series Slip-Ons are compatible with our True Duals.

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.