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Pro Circuit Factory 304 Silencer - 2-Stroke
Pro Circuit Factory 304 Silencer - 2-Stroke

$121.99 - $224.99
10% Off - Save up to $25.00

Item #PRC001D

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54 Reviews
4.8 out of 5 stars
5 Star   43 4 Star   11 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Nebraska
Durability 4/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 4/5
2001 kx85

I purchased this exhaust because I needed a new one and it is great. I can definitely notice the power difference and it sounds good too.

San anto
Durability 4/5 Ease of Installation 3/5 Performance 4/5 Power 4/5 Style 4/5
Great...but missing key things

Loved it but wish it came with bushings &/or bolts to hold it on but other than that it's a great product,it comes packed so you don't have to mess with fiberglass packing 9/10

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great product fast shipping!

I ordered this silencer and I couldn't be happier! The power is awesome paired with the pro circuit platinum pipe. Low end torque sufferers a little but the mid to top end screams and more than makes up for the low end loss. Very happy customer!

Norway
Ease of Installation 5/5 Performance 4/5 Power 4/5 Style 5/5
Very good :)

Its a very good e exhaust :) its have a very hig sound
Its fit easily on my ktm 125. its the perfect shorty to ktm 125



Fitted on: ktm 125 exc 2014

Pro Circuit Factory 304 Silencer - 2-Stroke
Verified Purchaser
central il
Durability 5/5 Ease of Installation 5/5 Performance 4/5 Power 4/5 Style 5/5
Good silencer

Smaller profile than stock. Maybe added some power but still working on finding the right jet combo for my riding style. Still fouling plugs like crazy. Actually had to go down in size on main and pilot jet and still have to go down. I ride mostly trails so its very low speed stuff maybe thats why. Sounds about the same but as the packing gets soaked in oil seems like its getting louder. Overall very happy. Has taken a beating getting dumped and has held up fine.

Verified Purchaser
Torrance
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great sound

Exhaust sounds awesome on my kx500. Could also feel a little more power in the bottom end!

Pro Circuit Factory 304 Silencer - 2-Stroke
Verified Purchaser
Geneva, Ohio
Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 3/5
Exactly as I expected...

Form, fit and finish is of a quality that I'd expect. I can't say anything bad for the silencer. It did just as I wanted, I was running a shorty silencer, but with my SXS 300 kit it was a little to punchy for my tastes. The longer silencer moved the powerband higher into the RPM range and the hit was a tad softer. It works for me.

Fitted on: 2009 KTM 250SX

Verified Purchaser
Michigan, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Good product

pro-circuit products have been on my race bikes for 20 years they hold up well look good and perform well . very happy with pro-circuit.

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 4/5 Style 5/5

Houston, TX, USA
Durability 4/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 4/5
Pro Circuit 304

First silencer I ever bought that actually improved performance in conjunction with a pro circuit platinum 2 pipe. Power delivery better across the board. Buy it !

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46 Questions
Answered:   45
Not Yet:   1
Bones
Q: Will this fit on my stock head pipe for my 2005 cr250?
1 month 5 days ago
.
Michael
Top 25
1 month 5 days ago
A: This pipe does fit your 05 cr250 two-stroke.
fcosenz
Q: I have a 2015 TM 250 MX . Will this fit my bike?
2 months ago
robert
Top 10 Contributor
2 months ago
A: We do not have listings for a 2015 TM 250 MX. You would want to contact Pro Circuit.
blackbeard422
Q: Just wondering if this slip on will fit a fmf fatty head pipe for a 99 kx 125
Over 6 months ago
BillyEXT3407
Top 25 Contributor
Over 6 months ago
A: Yes, the Pro Circuit Factory 304 Silencer will fit the FMF Fatty expansion chamber on the 1999 KX125.
Troy
Q: I have the pro circuit platinum pipe with a spark arrester silencer. I broke the silencer and want to know if this silencer fit on the platinum pipe?
Over 6 months ago
BillyEXT3407
Top 25 Contributor
Over 6 months ago
A: I do apologize about this, however, Pro Circuit does not offer a R304 silencer for the 1999 YZ250 anylonger. However, they do make a Factory Sound 304 silencer for the 1999 YZ250 that will fit the Platinum expansion chamber.
329Intermediate
Q: Is this a shorty pipe?
1 year 4 months ago
My buddy that races for a career told me not to put a shorty on my yz250 2-stroke i was wondering why he said that an if this was a shorty
Matt
Q: Fitment
1 year 6 months ago
Will this silencer come with an end cap on my 2005 KX85 or will it be flat?
MotoSportExpert
Expert MotoSport Staff
1 year 6 months ago
A: On the Kawasaki KX80-85-100 1998-2016 and Suzuki RM100 2003-2005, it would be flat.
max12
Q: Is there a spark arrestor on a 304?
1 year 9 months ago
MotoSportExpert
MotoSport Staff Expert
1 year 9 months ago
A: No the Pro Circuit Factory 304 Silencer would not have a spark arrestor.
Vintagerider
Q: Will this fit on my 1988 Cr125r Fmf gold series Header pipe?
1 year 10 months ago
MotoSportExpert
MotoSport Staff Expert
1 year 10 months ago
A: Fitment between manufactures can not be guaranteed, however with that said you should not have an issue. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct silencer for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
DT12
Q: 304 or R-304 shorty
1 year 11 months ago
I ride mostly in the desert with a 2015 KTM 300 EXC and would like to know which you recommend? I realise the R-304 will improve bottom end and the 304 top end, but will the R-304 take off a lot of the top end power? Really like the sound the R-304 makes. The pipe is the standard OEM one. Thanks
Tclaxton
1 year 11 months ago
A: On my yz250 i could tell a big difference on the top end from the r304 and the 304. With the r304 my bike didnt rev out as high. So really just depends on how you ride your bike.
DRDRACING
Q: Is there a rubber sleeve that connects the silencer to the pipe or is it metal to metal fit?
2 years ago
MotoSportExpert
MotoSport Staff Expert
2 years ago
A: The rubber connector can be found in our OEM section for your bike here:
http://www.motosport.com/dirtbike/oem-parts/yamaha/2008/yz125/exhaust

Part# 4JY-14615-00-00
1 - 10 of 46
Fitment
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See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Pro Circuit Factory 304 Silencer - 2-Stroke N/A
Pro Circuit Factory 304 Silencer - 2-Stroke 1051212
Pro Circuit Factory 304 Silencer - 2-Stroke SH00125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH02125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH93125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH00250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH02250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH04250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH92250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH97250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH99250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH91500SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH96080SE
Pro Circuit Factory 304 Silencer - 2-Stroke ST03250SE
Pro Circuit Factory 304 Silencer - 2-Stroke 1051125
Pro Circuit Factory 304 Silencer - 2-Stroke ST04085SE
Pro Circuit Factory 304 Silencer - 2-Stroke SK03125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SK99125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SK03250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SK05250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SK95250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SK99250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SK88500304
Pro Circuit Factory 304 Silencer - 2-Stroke N/A
Pro Circuit Factory 304 Silencer - 2-Stroke SK02065304
Pro Circuit Factory 304 Silencer - 2-Stroke SK98080304
Pro Circuit Factory 304 Silencer - 2-Stroke SS02125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SS93125304
Pro Circuit Factory 304 Silencer - 2-Stroke SS96125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SS01250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SS02250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SS04250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SS96250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SS99250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SS89080304
Pro Circuit Factory 304 Silencer - 2-Stroke SY00125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY02125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY00250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY03250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY93250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY93080SE
Pro Circuit Factory 304 Silencer - 2-Stroke SQY87350SE
Pro Circuit Factory 304 Silencer - 2-Stroke SQY88200304
Pro Circuit Factory 304 Silencer - 2-Stroke SH89500SE
Pro Circuit Factory 304 Silencer - 2-Stroke SH87500SE
Pro Circuit Factory 304 Silencer - 2-Stroke SS93250XSE
Pro Circuit Factory 304 Silencer - 2-Stroke SQS87080304
Pro Circuit Factory 304 Silencer - 2-Stroke SH87080304
Pro Circuit Factory 304 Silencer - 2-Stroke SH87125304
Pro Circuit Factory 304 Silencer - 2-Stroke SH87250304
Pro Circuit Factory 304 Silencer - 2-Stroke N/A
Pro Circuit Factory 304 Silencer - 2-Stroke SH89125304
Pro Circuit Factory 304 Silencer - 2-Stroke SH89250304
Pro Circuit Factory 304 Silencer - 2-Stroke SH90250304
Pro Circuit Factory 304 Silencer - 2-Stroke N/A
Pro Circuit Factory 304 Silencer - 2-Stroke SH91250304
Pro Circuit Factory 304 Silencer - 2-Stroke SK89200D304
Pro Circuit Factory 304 Silencer - 2-Stroke SK90250SE
Pro Circuit Factory 304 Silencer - 2-Stroke N/A
Pro Circuit Factory 304 Silencer - 2-Stroke SK92250SE
Pro Circuit Factory 304 Silencer - 2-Stroke N/A
Pro Circuit Factory 304 Silencer - 2-Stroke SK95125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SK95200DSE
Pro Circuit Factory 304 Silencer - 2-Stroke SQH86250304
Pro Circuit Factory 304 Silencer - 2-Stroke SS88125304
Pro Circuit Factory 304 Silencer - 2-Stroke SS89125304
Pro Circuit Factory 304 Silencer - 2-Stroke SS89250304
Pro Circuit Factory 304 Silencer - 2-Stroke SS93250304
Pro Circuit Factory 304 Silencer - 2-Stroke ST04125SE
Pro Circuit Factory 304 Silencer - 2-Stroke ST04300SE
Pro Circuit Factory 304 Silencer - 2-Stroke ST96300304
Pro Circuit Factory 304 Silencer - 2-Stroke ST98125SE
Pro Circuit Factory 304 Silencer - 2-Stroke ST98250SE
Pro Circuit Factory 304 Silencer - 2-Stroke ST98380304
Pro Circuit Factory 304 Silencer - 2-Stroke SY84490304
Pro Circuit Factory 304 Silencer - 2-Stroke SY85080304
Pro Circuit Factory 304 Silencer - 2-Stroke SY87125304
Pro Circuit Factory 304 Silencer - 2-Stroke SY88250304
Pro Circuit Factory 304 Silencer - 2-Stroke N/A
Pro Circuit Factory 304 Silencer - 2-Stroke N/A
Pro Circuit Factory 304 Silencer - 2-Stroke SY91250304
Pro Circuit Factory 304 Silencer - 2-Stroke SY93125304
Pro Circuit Factory 304 Silencer - 2-Stroke SY94125304
Pro Circuit Factory 304 Silencer - 2-Stroke SY96125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY96250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY97250304
Pro Circuit Factory 304 Silencer - 2-Stroke SY98125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY98250SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY99125SE
Pro Circuit Factory 304 Silencer - 2-Stroke SY99250SE
Pro Circuit Factory 304 Silencer - 2-Stroke 1051130
Pro Circuit Factory 304 Silencer - 2-Stroke ST09065-SE
Pro Circuit Factory 304 Silencer - 2-Stroke ST09085-SE
Pro Circuit Factory 304 Silencer - 2-Stroke 1051525
Pro Circuit Factory 304 Silencer - 2-Stroke 1181250
Pro Circuit Factory 304 Silencer - 2-Stroke 1181265
Pro Circuit Factory 304 Silencer - 2-Stroke 1057125? 
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