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Pro Circuit Factory 304 Silencer - 2-Stroke

$114.99 - $209.99
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Pro Circuit Factory 304 Silencer - 2-Stroke - Main
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Product Description

With a clear and stylish design, the 304 Silencer will make a lasting impression. The slightly longer body offers reduced noise output when compared to the R-304. Its perfectly constructed lightweight cylindrical canister, combined with the brushed aluminum body and stainless steel inlet tube and end cap, give you a silencer that looks as good as it performs and ensure that a truly unique riding experience is in store for you. The 304 silencer is recommended for most two-stroke applications.

  • Brushed aluminum and stainless steel inlet tube and end cap.
  • Weighs less than stock exhaust.
  • Improves top-end power for two-stroke motorcycles while keeping factory sound.
  • Convenient bolt-on end cap to easily replace packing.
  • Customer Reviews
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(40)
4.8 out of 5 stars
5 star   32
4 star   8
3 star 0
2 star 0
1 star 0
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“ The 304 really lets all my horses out, top and bottom end show significant power increase. ”
LukeMX8 Location: Fernley, NV
“ good silencer sounds awsome with the pro circuit works header... ”
beastandtheharlet Location: muncy pa
“ it is noticeably quieter , but dose not take away any preformane, all around good pipe... ”
longlivethe2stroke Location: new hampton , NY
1-10 of 40
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Verified Purchaser
Location: Fernley, NV
PC Factory 304 - 92' Noleen Yamaha YZ250
The 304 really lets all my horses out, top and bottom end show significant power increase. Had a spark arrest on before. Very snappy on the pipe, no back pressure lost. No change in spark plug wear. Hidden behind the number plate, very neat to the bike. SOUNDS SIKK!!!
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Location: Chicago, IL
Best sounding banshee silencer
i bought these to pair with a set of shearer inframe drag pipes they fit like a glove and took the banshees crackling sound away and gave her a extraordinary exhaust note in between a 4 stroke and a chainsaw sounds like an angels soung to my ears.
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Verified Purchaser
Location: muncy pa
good silencer sounds awsome with the pro circuit works header
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Verified Purchaser Top 250 Contributor
Good Tip
Sound good and good price
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Verified Purchaser
Location: new hampton , NY
Good purchase
it is noticeably quieter , but dose not take away any preformane, all around good pipe
Overall
kx 85 with PC 304 silencer
Location: Shelby, NC
Pro circuit 304
This looks like its going to be a good silencer, it was a little hard to put on my 2007 kx 85 you have to force it some it was off a little bit. Havent got to ride it yet or start it up but im going to tommorw. But by hard to put on i mean you have to push real hard and it pushes the rubber muffler joint thing some and it goes back a little extra.
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Location: Billerica MA
Great purchace, better sound, more power
this silincer was a great buy, it quieted my bike down a bit and made it sound awesome, and i didnt even need to rejet my kx 80, there was a major power increase throught low to high rpm's the only problem was that the silincer didnt fit in the stock position and it wouldn't let me put my side pannel on right, and i had to modify the side pannel to get the new silincer to fit in but it looks alright, the silincer didn't look like it does in the picture but whatever, overall a great buy
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Top 250 Contributor
Location: Hawthorne, CA
Super Silencer!!
Bought this with the Platinum Series Pipe for my 2000 YZ 250. It bolted right on, fit perfectly and performs great. I love the way this make s the bike sound! It is very easy to re-pack and the finish is durable. Big thumbs up!! See my review on the Platinum Series pipe for more...
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Location: melrose, NY
Great buy
i would recamend this pipe 2 any one who likes power, i just put it om my 2006 cr85 and it ripes even more, great for trails and track i use it for both great buy.
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Location: north bend washington
Best purchase ever
great
1-10 of 40
Total Questions (22)
Questions with answers:
  22
Questions without answers:
0
Have a question?
“ Why doesnt it give me an option for a 08 yz250?... ”
cordless Location: florida
“ Will this silencer add any bottom end torque and power ?... ”
yz125rider1111
“ Will this sliencer fit onto my stock pipe for a 2000 yamaha blaster?... ”
chrisy
1-10 of 22
Carnell24 3 months 19 days ago
Kx125 cr125?
Will my pro circuit exhaust from my 2005 cr125 fit my 2004 kx125
MotoSport Staff
3 months 17 days ago Location: Portland, OR, USA
No, the two different models require their own silencer.
Answer this Question
evs95 Over 3 years ago
Will this silencer fit?
will this silencer fit on fmf fatty pipe? because i do not like the fmf silencer you have for the 1991 rm 125.
Over 3 years ago
yes, as long as you have your ride set as an rm 125 and the correct year. because i have a 2002 cr 250 with a procircuit shorty and fmf fatty. it fits just fine.
Over 3 years ago Location: stephens city va
any pipe silencer should work together as long as they both read will work with factory headpipe, silecer so just call fmf and ask them if you dont know. the silencer will work as long as the fatty pipe works with the stock silencer
Answer this Question
cordless Over 3 years ago Location: florida
Why doesnt it give me an option for a 08 yz250?
it doesnt say that it fits an 08 yz250?? but it has an option for a 05 and under yz250.
Top 250 Contributor
Over 3 years ago Location: missoula mt
05 was the last year of the alluminum frame. not 100% sure but i would say the mounts changed when it went from 05 to 06. whether they changed it on the main frame or subframe im not sure. but because they stopped at 05 i would assume thats whats going on.
Answer this Question
austinrider4646 Over 3 years ago
Does this silencer have a United States forest service approved spark arrester?
MotoSport Staff Expert
Over 3 years ago Location: Portland, OR
This silencer does not have a spark arrestor, so no USFS stamp of approval.
Answer this Question
yz125rider1111 Over 3 years ago
Will this silencer add any bottom end torque and power ?
MotoSport Staff Expert
Over 3 years ago Location: Portland, OR
Pro Circuit Factory 304 silencer improves top end power for 2 stroke motorcycles while keeping factory sound.
Top 500 Contributor
Over 3 years ago
Yes. The longer silencers add more bottom end.
Answer this Question
chrisy Over 3 years ago
Will this sliencer fit onto my stock pipe for a 2000 yamaha blaster?
Expert MotoSport Staff
Over 3 years ago Location: Portland, OR
Yes this silencer will fit your stock Blaster's pipe.
Top 500 Contributor
Over 3 years ago
If it says it fits your application, then it will bolt up and replace your factory silencer.
Answer this Question
cordless Over 3 years ago Location: florida
Will this silincer fit my stock 08 yz250 header?
Expert MotoSport Staff
Over 3 years ago Location: Portland, OR
Yes this will fit the stock expansion chamber.
Answer this Question
zuuk125 Over 3 years ago
Would this fit on a bills pipe?
i have a bills exhaust system, would i be able to take of the silencer and replace it with this one?
Top 10 Contributor
Over 3 years ago Location: Portland
Probably not without modification.
Answer this Question
suzuki4life Over 3 years ago
Im looking for a new pipe that will give me more top end power should i go with this or a shorty? and PC or FMF?
Over 3 years ago Location: Abbs Valley,VA
if you want more top end you need to get this the shorty increases bottom end and i would take pro circuit i had a FMF muffler it was terrible it practicly fell apart
Top 500 Contributor
Over 3 years ago
I believe the FMF has more top end. however both exhausts are an improvement over stock.
Answer this Question
herzog Over 4 years ago
Does this come with 2 pipes for a banshee?
MotoSport Staff Expert
Over 4 years ago Location: Portland, OR
yes, the price of the banshee pipes reflect 2 silencers.
Answer this Question
1-10 of 22

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