The makers of slip-on mufflers know that the vast majority of motorcyclists who buy these items are looking for a more aggressive sound from their bikes, and they have designed their products to provide maximum gains in that area: sound. When you put a slip-on muffler onto your bike, you’re changing the airflow and the back-pressure from the exhaust gases a little, so you might see a tiny increase in power and notice a very minor difference in power delivery, but generally what you’re making a major change to is the way sound waves exit your exhaust. In short, no, a slip-on exhaust probably won’t increase horsepower. Does A Slip On Exhaust Increase Horsepower? A good aftermarket muffler, however, will give your bike a much more pleasing sound, as well as increasing the volume, but not to an annoying degree. Often, bikes with baffles removed simply sound obnoxiously loud.
And while removing baffles can make your bike louder, that doesn’t mean it’ll sound better. Some back pressure from the exhaust is necessary, and without it you’ll likely lose torque and low-end power, and some horsepower across the rev range, even if you do gain a little at the very top of the rev range – which you won’t be using for the majority of your riding anyway. Increasing engine performance isn’t a simple science. Why buy an aftermarket muffler if you can make your bike louder simply by removing the baffles? Proponents of baffle removal also claim that by removing baffles you’re allowing your exhaust to flow more freely and thus increasing performance. These are small inserts that are installed near the exit of the muffler, and they also aid in noise reduction by causing gases and sound waves to bounce around more, and thereby be absorbed by the packing material in the muffler.Ĭan’t I Just Remove the Baffles from My Stock Pipe to Get A Better Sound?Ī cheap solution, touted by DIY mechanics, to a bike that’s deemed too quiet is to simply remove the baffles from your stock exhaust. Motorcycles are generally louder than cars because they have much shorter pipes and less room for large mufflers.īoth stock mufflers and aftermarket mufflers generally have baffles too. It does this by getting the sound waves produced by the motor to cancel each other out, and regulating the pressure of the exhaust gases emitted by the motor. The function of a muffler (or silencer) is to literally muffle the sound of explosions within your motor. The difference between the sound of an explosion in your piston and a firework exploding is that the explosion inside your motor has its sound waves absorbed and modulated by your exhaust. Inside your bike or car motor, a similar thing is happening every time your spark plug fires. They’re so loud because there’s nothing around them to absorb the sound waves. There’s a really loud bang – and this sound is caused by a sonic boom from the rapid expansion of gases in the explosion. Why does an exhaust affect the sound a motorcycle motor makes? Well, everyone knows what a firework sounds like when it explodes nearby.
DNA 4″ Tapered Megaphone Slip-Ons Best Budget Slip On Mufflers For Harley Street Glide ★★★Ĭheck out our other Harley Davidson performance improvement guides: Rinehart Racing 4″ Slip-On Mufflers Best Performing Harley Slip Ons ★★★★ 6. SHARKROAD Classic Megaphone Slip-On Mufflers Best Slip Ons For Harley M8 ★★★★★ 5. Cobra Neighbor Haters Slip-On Mufflers Best Sounding Slip On Mufflers For Harley Touring ★★★★★ 4. DRACULEXTREME Classic Fishtail Drag Pipe Slip On Mufflers Best Slip On Mufflers For Harley Road King ★★★★★ 3. Vance & Hines Straightshots HS Slip Ons Best Slip On Mufflers For Harley Softail ★★★★★ 2. First Checkpoint Product Best For Our Rating 1. They add a thunderous but crisp note to your sound. Vance & Hines Straightshots are some of the most popular slip-ons for Harley Softails, and for good reason. Top Choice: Vance & Hines Straightshots HS Slip Ons Watch Latest Videos Best Slip On Mufflers for Harley Quick Review
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