Recommend a 2020 KX450 alternative silencer

tridennisr
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tridennisr
Edited Date/Time 11/4/2021 6:36pm
I’m looking at a 2020 KX450, but can’t get past that ugly ass silencer. Can anyone recommend a replacement that looks better? I honestly don’t care about performance as the bike is all I can handle, but just can’t stomach the look of the stock silencer. The Pro Circuit looks is slightly better looking , but wondering if there’s something any better?

Alternatively, had anyone tried using old style plastics that offer a little better coverage to hide that hideous thing?

Thanks!
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Kyle978
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Kyle978 4/6/2021 3:30pm
4/6/2021 3:30pm
I’m happy with the PC t-6 slip on for my 21 450. Much better looking, good exhaust note and a little lighter. 20 hours on it and it’s holding up great.
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Indy mxer
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Indy mxer 4/6/2021 4:22pm
4/6/2021 4:22pm
I had an FMF on my 19 and loved it. But good luck finding one right now. I have a 21 KX250 and I can't find one anywhere
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soggy
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soggy 4/7/2021 6:51am
4/7/2021 6:51am
Anything but yosh, I think it might be bigger then the stocker
Timo
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Timo 4/7/2021 10:04am
4/7/2021 10:04am
Bigger number plates should take care of that...
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tridennisr
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tridennisr 4/7/2021 10:27am
4/7/2021 10:27am
Timo wrote:
Bigger number plates should take care of that...
I couldn’t agree more. A bigger plate would look way better.
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motox505
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motox505 10/28/2021 5:53am
10/28/2021 5:53am
Does anyone have first hand experience with the 2019-2022 KX450 with the HGS exhaust on it? Looks a lot like the Yoshimira header pipe with a shorter more PC like muffler. Does it add power everywhere? I found the PC pipe to be more top end centric. We are considering running them on our bikes this year and I would love an honest review. I found this YouTube of a guy just running the bike on the stand, it sounds good.

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Grovesy98
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Grovesy98 10/29/2021 1:05pm
10/29/2021 1:05pm
motox505 wrote:
Does anyone have first hand experience with the 2019-2022 KX450 with the HGS exhaust on it? Looks a lot like the Yoshimira header pipe with a...
Does anyone have first hand experience with the 2019-2022 KX450 with the HGS exhaust on it? Looks a lot like the Yoshimira header pipe with a shorter more PC like muffler. Does it add power everywhere? I found the PC pipe to be more top end centric. We are considering running them on our bikes this year and I would love an honest review. I found this YouTube of a guy just running the bike on the stand, it sounds good.

This is my video from when I had the KX450. The pipe made more power everywhere, but if I'm honest was a bit loud. Very well made though
Chris99Flannery 10/29/2021 2:22pm
10/29/2021 2:22pm
Rocket black ano silencer looks trick. But after an email or two regarding the vital discount, he went silent on me and so i went an FMF. If you go fmf get your subframe braced at the exh mount. Missed out on a podium at a large race in vets, as boy they lose a lot of power when its looking at you lap after lap on the side of track. So do the spectators!
Fmf is loudish but people comment it sounds good.
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watson90
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watson90 10/29/2021 2:37pm
10/29/2021 2:37pm
How would a shorter muffler change the power? More low end or more top end?
cmotodad
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cmotodad 10/29/2021 4:05pm
10/29/2021 4:05pm
I have a Yosh on my 2020. I think all the pipes look terrible with the small, short number plates. I really like the torque and smoothness the Yosh pipe did for my bike.
Electro21
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Electro21 10/30/2021 10:51am
10/30/2021 10:51am
Chris99Flannery wrote:
Rocket black ano silencer looks trick. But after an email or two regarding the vital discount, he went silent on me and so i went an...
Rocket black ano silencer looks trick. But after an email or two regarding the vital discount, he went silent on me and so i went an FMF. If you go fmf get your subframe braced at the exh mount. Missed out on a podium at a large race in vets, as boy they lose a lot of power when its looking at you lap after lap on the side of track. So do the spectators!
Fmf is loudish but people comment it sounds good.
Rocket does look great, but customer service isn’t the best. I’ve got one for my CRF 250.
cloud41
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cloud41 10/31/2021 6:17am
10/31/2021 6:17am
Cut the muffler 4” shorter and put the end cap back on. I did this on a 2013 and it looked great. No noticeable change in sound or performance.
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50dippin
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50dippin 11/1/2021 10:13am
11/1/2021 10:13am
had a fmf, it broke at the mount rivets after about a year. PC is heavier but seems to be built better.

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Zycki11
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Zycki11 11/1/2021 10:36am
11/1/2021 10:36am
cloud41 wrote:
Cut the muffler 4” shorter and put the end cap back on. I did this on a 2013 and it looked great. No noticeable change in...
Cut the muffler 4” shorter and put the end cap back on. I did this on a 2013 and it looked great. No noticeable change in sound or performance.
Do not do this. Back pressure goes out the window.
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cloud41
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cloud41 11/1/2021 3:21pm
11/1/2021 3:21pm
cloud41 wrote:
Cut the muffler 4” shorter and put the end cap back on. I did this on a 2013 and it looked great. No noticeable change in...
Cut the muffler 4” shorter and put the end cap back on. I did this on a 2013 and it looked great. No noticeable change in sound or performance.
Zycki11 wrote:
Do not do this. Back pressure goes out the window.
There was no noticeable difference in performance. I’ve experienced a greater loss of back pressure going with an aftermarket head pipe or fmf muffler.
LouisianaMotocross 11/1/2021 7:09pm
11/1/2021 7:09pm
LouisianaMotocross wrote:
I just purchased the DRD one. haven't got it in yet.
My slip on came in. Sounds great. Seems to have cut the snap down low back a little and moved it up toward the top.
kNewc
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kNewc 11/2/2021 8:01am
11/2/2021 8:01am
Indy mxer wrote:
I had an FMF on my 19 and loved it. But good luck finding one right now. I have a 21 KX250 and I can't find...
I had an FMF on my 19 and loved it. But good luck finding one right now. I have a 21 KX250 and I can't find one anywhere
My local bike shop called me today and said that the backordered silencer was finally able to be ordered (for 21 kx250) so call up your shop today! You may be able to order one.

I tried private messaging you...not sure if it worked.
hititpind
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hititpind 11/2/2021 9:33am
11/2/2021 9:33am
Just bought a 2021 and I have the same question. Is it worth going full exhaust or just the slip-on?
sebastianer 11/4/2021 2:21pm
11/4/2021 2:21pm
is there a long and a short version of the hgs muflers ? seem like there are different ones out there.
MX558
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MX558 11/4/2021 4:27pm
11/4/2021 4:27pm
I have the new style Yosh and plan on cutting it down about 2 1\2 inches this winter . I cut 3 inches off my sticker and didn't notice any power difference either
coastie44
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coastie44 11/4/2021 4:31pm
11/4/2021 4:31pm
MX558 wrote:
I have the new style Yosh and plan on cutting it down about 2 1\2 inches this winter . I cut 3 inches off my sticker...
I have the new style Yosh and plan on cutting it down about 2 1\2 inches this winter . I cut 3 inches off my sticker and didn't notice any power difference either
It could depend on your riding style or tracks you ride. If you are wide open or tracks are high speed, you may not notice a lack of back pressure (which translates to snap off the bottom). But tight tracks with jumps out of corners are hard to make for me when that occurs. This happens to with silencers that have different tips with smaller/larger openings.
coastie44
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coastie44 11/4/2021 4:33pm
11/4/2021 4:33pm
hititpind wrote:
Just bought a 2021 and I have the same question. Is it worth going full exhaust or just the slip-on?
I had an FMF slip on and it didn't do much except look good. But I put a full yosh on and was really surprised at how much it boosted the power throughout the range. Highly recommend if you can find one. :-)
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MX558
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MX558 11/4/2021 6:35pm
11/4/2021 6:35pm
hititpind wrote:
Just bought a 2021 and I have the same question. Is it worth going full exhaust or just the slip-on?
coastie44 wrote:
I had an FMF slip on and it didn't do much except look good. But I put a full yosh on and was really surprised at...
I had an FMF slip on and it didn't do much except look good. But I put a full yosh on and was really surprised at how much it boosted the power throughout the range. Highly recommend if you can find one. :-)
I wrote it back to back with the stock muffler with the new style.yosh system and it was a nice improvement but not earth shattering
MX558
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MX558 11/4/2021 6:36pm
11/4/2021 6:36pm
MX558 wrote:
I have the new style Yosh and plan on cutting it down about 2 1\2 inches this winter . I cut 3 inches off my sticker...
I have the new style Yosh and plan on cutting it down about 2 1\2 inches this winter . I cut 3 inches off my sticker and didn't notice any power difference either
coastie44 wrote:
It could depend on your riding style or tracks you ride. If you are wide open or tracks are high speed, you may not notice a...
It could depend on your riding style or tracks you ride. If you are wide open or tracks are high speed, you may not notice a lack of back pressure (which translates to snap off the bottom). But tight tracks with jumps out of corners are hard to make for me when that occurs. This happens to with silencers that have different tips with smaller/larger openings.
I agree I don't ride supercross style tracks too much anyway and that damn muffler so big even with the new style. I think you could use couple inches off lol

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