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Discussion Starter · #1 ·
Im thinking of getting one of these. I primarily want the Coffman, but I saw the install video, and it gets riveted into place, which I think means I can't take it off again? Will it not be mounted good enough without being riveted into place?

If not, I might go with the akrapovic slip-on, but my worry is that it doesn't have a db-killer for those long road trips, and also it might not be loud enough for those moments you really want to hear the bike. The two things the Coffman's got.

Does anyone have any experience with this?

Thanks! :D
 

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The rivet install is jinky. You CAN remove it if you need to, but you will have to drill or grind the rivet.

No slip-on is going to be that loud on the R3. You don't need a db-killer. Just get which ever one you like the best.
 

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I you will need a full exhaust if you want something loud and aggressive. All the slips ons besides the m4 sounds alike to me.

Sent from my SAMSUNG-SM-G935A using Tapatalk
 

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Yes, it definitely needs a rivet. Although you could likely use some type of stainless screw I think if you wanted to be able to easily remove it.

I saw another exhaust install (I think it was an Arrow maybe), where they used plumbers teflon tape to make a tighter seal.

For me it came down to a few things. One (primary) was the look. Second, was sound. After listening to various slip ons, there wasn't a huge difference in my mind between slip ons so I was back to the first reason. Third was cost. Since the Coffman's was one of the most inexpensive and yet seems like a solid piece, I went that route. In the end, this is primarily a weight savings and cosmetic mod, get the one that you like the look of best. For me, I didn't really care for the Akrapovic but I did like some of the others out there. I chose Coffman's too because I liked the extra bracket that covers the pipe where you connect it to the bike.
 

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My Coffman's came in the mail today and I am very pleased. It is a quality piece, the finish is great and it just looks killer!

I originally liked the Yosh and the Akrapovic too, but the price just didn't add up for the reward in my book and plus I really didn't want to take off one big can for another. The Coffman's is a clean and subtle design that looks great on the bike without screaming "hey look at me! And it didn't break the bank to get it.

The sound..........
So, after dinner I installed that bad boy (super easy install) and went for a little cruise. I left the db killer in it. IMO It defiantly has a slight more grumble in her now and a little more throaty. It's nothing earth shattering or anything but it's noticeable. Once you open it up right around 7.5k she really starts to sing. You can tell it's not OME.

As mentioned if you really want it louder, deeper and slight performance gains you have to go with a full system, but then you are looking at PC's, remapping, and block off plates.

At the end of the day (hehe Brian Van) just go with what you like man. I am sure the majority of slip-ons available are fairly equal as in sound and weight saving.
 

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At the end of the day (hehe Brian Van) just go with what you like man. I am sure the majority of slip-ons available are fairly equal as in sound and weight saving.
This is what everyone needs to realize about slip-ons for the R3. You are shedding some weight and putting on a can that is probably more aesthetically pleasing than stock. Your exhaust might have a better note to it and may be be a bit deeper than stock, but you will NOT be getting the drastic change in sound you get on other bikes unless you go with a full exhaust or remove the cat like the M4 SS.

You prob won't be able to distinguish sound differences with slip ons from video clips since the audio is not properly optimized, and b/c the change in sound is so minimal. Ultimately its a matter of price and aesthetics, unless you somehow know you like a particular sound from a particular slip-on.
 

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Discussion Starter · #7 ·
My Coffman's came in the mail today and I am very pleased. It is a quality piece, the finish is great and it just looks killer!

I originally liked the Yosh and the Akrapovic too, but the price just didn't add up for the reward in my book and plus I really didn't want to take off one big can for another. The Coffman's is a clean and subtle design that looks great on the bike without screaming "hey look at me! And it didn't break the bank to get it.

The sound..........
So, after dinner I installed that bad boy (super easy install) and went for a little cruise. I left the db killer in it. IMO It defiantly has a slight more grumble in her now and a little more throaty. It's nothing earth shattering or anything but it's noticeable. Once you open it up right around 7.5k she really starts to sing. You can tell it's not OME.

As mentioned if you really want it louder, deeper and slight performance gains you have to go with a full system, but then you are looking at PC's, remapping, and block off plates.

At the end of the day (hehe Brian Van) just go with what you like man. I am sure the majority of slip-ons available are fairly equal as in sound and weight saving.
Thanks for all the replies! I have the M4 Street Slayer, but I don't know if I want to cut the original exhaust, in case i get stopped and called in for a control, and I can't mount the original back on. Also, I've heard its too loud, and I'm thinking it will get tiring when i go on long trips with it.

Between these two, from the videos I've seen, it just seems like the Coffman's sounds a bit better. But I don't know if that's just me or the difference in microphones.

Have you tried without the db-killer? Any difference?
 

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Thanks for all the replies! I have the M4 Street Slayer, but I don't know if I want to cut the original exhaust, in case i get stopped and called in for a control, and I can't mount the original back on. Also, I've heard its too loud, and I'm thinking it will get tiring when i go on long trips with it.

Between these two, from the videos I've seen, it just seems like the Coffman's sounds a bit better. But I don't know if that's just me or the difference in microphones.

Have you tried without the db-killer? Any difference?
Hey the M4 sounds great man, no doubt. Too loud for my tastes tho. I am a street rider not a track day guy.

I am satisfied the way the Coffman's is with the db killer in. I might take it out for kicks once but I really don't want it any louder. I don't see the need or reason why it needs to be any louder. Like you said for long rides it would become annoying. And ya know, I'm not looking for attention on my bike. Who needs Johnny Law pulling them over or having the neighbors get all worked up every time you fire it up. At the end of the day (hehe Brian Van) I'm not trying to impress anyone........I ride for me.
 

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Discussion Starter · #10 ·
There is a youtube video on this very topic with and without db killer. I didn't mount the db killer myself at all - but from what I heard on the video it sounds basically like stock almost. Looks way better and sounds better without it. Its not stupid loud but let's you know its there!

Also, in case you didn't see my review here: http://www.r3-forums.com/forum/546-exhaust-fuel-delivery/92474-my-review-coffman-s-exhaust.html
Yes I was just trying to hear from someone in person, because I know videoes don't do the sound justice.
 

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I'm going to go with the Coffmans for a couple reasons. First, it doesn't require the use of the hanger from the passenger foot peg. This is great because it'll allow me to remove those from both sides of the bike. I never ride passengers and I think they're ugly. The second is that it's not drastically different from the rest of the bike's look like the Akrapovic, which to me sticks out like a sore thumb on an otherwise relatively dark portion of the bike.

If you ever needed to get the rivet off it'd take two seconds - just drill the head off of it and it'd fall out. No big deal. It's not JUST the rivet that holds the exhaust on either, it uses a band clamp just like the other slip-ons do. The rivet is just to hold it in place a little better and probably also to make sure it doesn't fall off if the band clamp happens to loosen up, since it's not attached to the rear peg mount like the stock exhaust.

The only thing I don't like about it is the massive tag that comes on it with the company name. I wish that was about 1/4 the size.
 

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Discussion Starter · #12 ·
I'm going to go with the Coffmans for a couple reasons. First, it doesn't require the use of the hanger from the passenger foot peg. This is great because it'll allow me to remove those from both sides of the bike. I never ride passengers and I think they're ugly. The second is that it's not drastically different from the rest of the bike's look like the Akrapovic, which to me sticks out like a sore thumb on an otherwise relatively dark portion of the bike.

If you ever needed to get the rivet off it'd take two seconds - just drill the head off of it and it'd fall out. No big deal. It's not JUST the rivet that holds the exhaust on either, it uses a band clam just like the other slip-ons do. The rivet is just to hold it in place a little better and probably also to make sure it doesn't fall off if the band clamp happens to loosen up, since it's not attached to the rear peg mount like the stock exhaust.

The only thing I don't like about it is the massive tag that comes on it with the company name. I wish that was about 1/4 the size.
Yes, I think I'm going with the Coffman's as well.
I like the company logo on the side, it matches the bike.
 

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I'd look fine with a red bike. I'm not a big fan of it on a blue one like mine though. At least it's cheap.
 

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1,2,3...

Likewise.....

One (primary) was the look. Second, was sound. After listening to various slip ons, there wasn't a huge difference in my mind between slip ons so I was back to the first reason. Third was cost. Since the Coffman's was one of the most inexpensive and yet seems like a solid piece, I went that route.
 
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