Kerker Slip-Ons are available for 1985-2011 Baggers, 2010-2011 Street Glide/Road Glide and 1997-2007 Softails. The newer model Slip-Ons were developed specifically for the 2010-2011 FLH/FLT models, as the stock head pipes were redesigned by the factory. These newer Kerker Slip-Ons produce that signature Kerker deep, low toned rumble in conjunction with the new factory head pipes. Our Kerker Slip-Ons slide onto the 2010 Street Glide/Road Glide OEM 2:1 with ease. Kerker Slip-Ons provide great mid-high range power. 8 decibels louder than stock. Shootout champion with proven 10 - 12% hp gains. A Mikuni Core is available for peak performance and ultimate flow. Kerker Slip-Ons are compatible with SuperTrapp True Duals and the SuperTrapp Crossover Conversion. 17 end cap options are available for Kerker Series Slip-Ons and all of them will also fit H-D Performance II Mufflers making them ideal replacement parts.