Drill Holes in Road King Baffle to Increase Performance?

Do you know of any modifications I can make to my Harley Davidson Road King exhaust that will make it flow a little better and be a little bit louder than it is now?  I want the rumble but I don't have the money to spend on a full system right now.  I was told that could drill a series of holes in the baffle that would increase torque and increase sound level.

Our Answer

Duane....a LOT of new Harley owners do this and I must admit that I have tried doing it in the past. It sort of works....the bike will get louder depending on the size of the hole you drill in the baffle but I have to say that it doesn't really sound that great.

It sort of makes a chuff chuff sound instead of a lump lump sound if you can follow that highly technical explanation. We would recommend that if you are light on cash to keep the stock mufflers or if you must have the noise then at least put on a pair of inexpensive slip on mufflers. They are cheap and sound great...you can buy Harley Davidson slip ons for a pretty reasonable price.

If you are stuck on drilling holes...then start at 3/4 inch and go up depending on how you like the noise....but again...we do not recommend you do this.

Blitz Chrome RCX Exhaust 35 Slip Ons Mufflers for Harley 1995 2012 Touring FL    US $379.95

RINEHART SLIP ON MUFFLERS HARLEY TOURING 95 11 35 BAGGER ROAD KING FLH CLASSIC    US $467.99

BARELY USED ORIGINAL HARLEY DAVIDSON CHROME SLIP ON MUFFLERS FOR ROAD KING    US $59.99

RINEHART SLIP ON MUFFLERS FROM ROAD KING    US $329.99

4 CHROME SLIP ON MUFFLERS EXHAUST HARLEY TOURING ROAD KING ELECTRA GLIDE    US $199.95

VH Monster Oval Slip On Mufflers Road King FLHR    US $629.95

95 08 Road King Street Glide Electraglide VH Black Widow Slip On Mufflers    US $399.95

KCINT SLIP ON TOURING MUFFLER SET FOR HARLEY ELECTRA ULTRA GLIDE ROAD KING    US $199.00

HARLEY DAVIDSON 2012 Road King TOURING CHROME FACTORY SLIP ON EXHAUST MUFFLERs    US $140.00

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