[a1scoot]

Minimal gain but much more fun when you can hear the motor a bit....

 

[carmikey]

Just installed an exhaust on my Z125....
Found it on eBay for $115 shipped.
Looks great and the sound is deep but not too loud or obnoxious..

I too have purchased and installed one from EBAY. Brand is anodized, sounds, looks great & stainless welds couldn't be faulted. I had it shipped from Thailand to Australia for a total of $183AUD.... best bang for buck mod in my books so far!

 

[cookmeup272]

Slightly old thread but I'm wondering how that Anodized exhaust kit has been doing. I have absolutely 0 intentions of spending hundreds of dollars on a pipe and muffler for this bike so was looking at this option.

 

[Kaw'ee]

Most popular exhaust on another forum, sound great and seem to be holding up well so far... but there still kinda new.

 

[cookmeup272]

I ordered it, will be delivered Friday.

 

[tbswope]

I'm curious if anyone has any experience with the location of where the exhaust leaves changing the sound for the rider. Currently I have done the Kaw'ee 10 cent muffler mod. With where I have drilled the hole the sound waves are leaving directly below my head on a 45* angle to the left. Looking at pictures of the Anodized exhaust mentioned above, the sound waves would be leaving behind me and going straight back. My thought is that the sound would be pushed more behind me and I would hear less noise while riding. Not sure about my line of thinking, but thought maybe someone has hands on experience to share, or a lot better understanding of the science or physics of how sound travels.

 

[crakerjac]

I'm curious if anyone has any experience with the location of where the exhaust leaves changing the sound for the rider. Currently I have done the Kaw'ee 10 cent muffler mod. With where I have drilled the hole the sound waves are leaving directly below my head on a 45* angle to the left. Looking at pictures of the Anodized exhaust mentioned above, the sound waves would be leaving behind me and going straight back. My thought is that the sound would be pushed more behind me and I would hear less noise while riding. Not sure about my line of thinking, but thought maybe someone has hands on experience to share, or a lot better understanding of the science or physics of how sound travels.

Well, you aren't traveling faster than the speed of sound... so the sound coming out of the exhaust travels in all directions. That's why you can hear a bike coming and going....

 

[Ando]

Sound isn't directional, it's compressions of air that travel in all directions. Solid objects like cars and buildings can create "shadows" which give the impression of a directional sound, but motorcycles are too small to do this effectively and the ears you are worried about are directly above your sound source. The side exhaust probably has the more direct path to your ears.

So yeah, basically what crakerjac said with the addendum of "Everyone who has heard both an aftermarket exhaust and the 10 cent mod says the real pipe is heaps louder."

 

[tbswope]

Sound isn't directional, it's compressions of air that travel in all directions. Solid objects like cars and buildings can create "shadows" which give the impression of a directional sound, but motorcycles are too small to do this effectively and the ears you are worried about are directly above your sound source. The side exhaust probably has the more direct path to your ears.

So yeah, basically what crakerjac said with the addendum of "Everyone who has heard both an aftermarket exhaust and the 10 cent mod says the real pipe is heaps louder."

Thanks for the answer. That makes sense about sound traveling in all directions and objects bouncing the sound back making it seem like it's directional even when it's not. I was thinking more like a person with a bull horn talking to a group. The person behind the bull horn isn't getting the same volume as the people even or in front of the bull horn.

 

[cookmeup272]

Well, you aren't traveling faster than the speed of sound... so the sound coming out of the exhaust travels in all directions. That's why you can hear a bike coming and going....

I'm not saying you're wrong, but he wasn't asking if it would be unheard, rather if it would be quieter. Put a DB meter directly behind the bike and compare what it reads when its placed at head level as if you were sitting the bike and I'll bet you see a difference.

 

[Ando]

Put a DB meter directly behind the bike and compare what it reads when its placed at head level as if you were sitting the bike and I'll bet you see a difference.

I see what you are saying, and I agree from a scientific standpoint, but the fact that you would need a calibrated instrument to demonstrate this sort of proves that the difference will be negligible from the rider's perspective.

 

[Ando]

I was thinking more like a person with a bull horn talking to a group. The person behind the bull horn isn't getting the same volume as the people even or in front of the bull horn.

Mark Rober does a good job at explaining why bullhorns work the way they do, unfortunately with the exception of maybe the Hindle megaphone, that doesn't really apply to exhausts.

(Sorry, my YouTube subscriptions consist of... cars, motorcycles, and really nerdy ****.)

 

[tbswope]

Ando, thanks for the video makes a little more sense. I could put a bell shape tip on my current exhaust and make it louder, but moving the place the sound exits 1 foot backwards is not far enough to notice any noise reduction.

 

[Ando]

Measurable difference, sure, noticeable? Certainly not. Main advantages would be weight and street cred. Though, there are a couple quieter aftermarket exhausts that may be easier on the ears than your particular holey-muff.

I rode a bike with the pro-circuit exhaust and thought the noise level was totally reasonable sans-ear plugs and I don't ride my holey-muff without earplugs even for a few minutes.

My memory could be crap though. I would definitely try to find a local owner with the PC T-6 pipe before dropping $300 on it.

 

[Michael Josey]

Im looking to get an exhaust not sure if i need a tuner though. At some point i will get one im just looking to get noticed in traffic so i dont get ran over. lol

 

[cookmeup272]

Just get the cheap anodizing racing version on amazon. Have put 1000 miles on mine since I installed it a month and a half ago, no complaints. Never ran it with the baffle installed either.

 

[Fox Fader]

Zoom is the way to go.

 

[colticus]

I’m partial to hindle. Very large diameter piping (compared to other z exhaust) helps with modified bikes.