Pro Circuit R 304 Shorty Silencer - 2-Stroke

Pro Circuit R 304 Shorty Silencer - 2-Stroke
Pro Circuit R 304 Shorty Silencer - 2-Stroke

$121.99 $134.99
10% Off - Save $13.00

  • Description
  • 32 Reviews
  • 19 Questions
  • Fitment
Description Item #PRC0006

The R-304 Shorty silencer was developed as a full-race two-stroke silencer and was designed to increase power over stock exhaust. The compact design of the short aluminum canister offers optimum performance gains and is recommended for closed-course racing only. Hex head screws are used to secure the inlet cap and can be removed easily for quick re-packing of the silencer.

  • 304 stainless steel intake tube.
  • Double-walled mounting brackets.
  • 6061 T-6 brushed aluminum housing.
  • E-Glass internal packing for maximum packing life.
  • Lightweight with high-strength steel rivets and steel Allen head screws securing the inlet cap for easy repacking.

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32 Reviews
4.8 out of 5 stars
5 Star   30 4 Star   6 3 Star   0 2 Star   0 1 Star   0
drj416
Durability   Ease of Installation   Performance   Power   Style  
Totally worth it

I noticed the difference in sound right away, I think it opened the bike up more on the bottom end. Definitely worth the buy, in my opinion it seems better than the fmf shorty that I had previously.

Pro Circuit R 304 Shorty Silencer - 2-Stroke
Kxrider
Durability   Ease of Installation   Performance   Power   Style  

Love the sound and power over fmf but the pc doesn't bolt up with fmf fatty

Redbone
Verified Purchaser
Va
Durability   Ease of Installation   Performance   Power   Style  
Great trail pipe!!!

Awesome power were you need it!!

Pro Circuit R 304 Shorty Silencer - 2-Stroke
DirtBikeLover
Top 250 Contributor
Fresno, CA, USA
Durability   Ease of Installation   Performance   Power   Style  
Great

Match this up with a pro circuit platinum pipe and your good to go. This is very easy to install. And looks great. Gives my yz125 a little bit more top end power. And it sounds amazing. Every time I start up my bike I smile.

Pro Circuit R 304 Shorty Silencer - 2-Stroke
mrconservative
Verified Purchaser
Indiana, USA
Durability   Ease of Installation   Performance   Power   Style  
Awesome Silencer

The R304 silencer is my favorite 2 stroke silencer. They really have the sound I like. Fits perfect and looks good. 2001 CR125.

MX07
Verified Purchaser
Edgewater, MD
Durability   Ease of Installation   Performance   Power   Style  
R304 shorty

Amazing, just what son wanted & more

Winters
Top 500 Contributor
Mustang, OK
Durability   Ease of Installation   Performance   Power   Style  
Love that song !

The sound is amazing and easy to repack. Easy to reassemble with no fitment concern seen in other brands.

lotten454
Verified Purchaser
CA
Durability   Ease of Installation   Performance   Style  
Good silencer!

I have a pro circuit works pipe on my '04 RM250 which i bought secondhand. The bike came with a Pro Circuit spark arrester silencer which i rode with for a few months. I decided to finally get a motocross silencer and man! Not only is this Shorty about 2 lbs lighter than the spark arrester, it took the tame power band of the RM250 and gave it some hit! A little more on the bottom, but mostly noticed that the powerband actually "hits" now in the mid range. Noticed no difference on the top end but i barely get out of third gear on the local tracks anyway!

Nick
Verified Purchaser
Durability   Ease of Installation   Performance   Power   Style  
Great!

Adds some bottom end not to much but you can defiantly feel it going up a hill! Great Pipe!

Kawi11
Top 1000 Contributor Verified Purchaser
Bremerton, WA, USA
Durability   Ease of Installation   Performance   Power   Style  
Great can

Looks good, sounds good and gives a nice performance boost.

MXdad
Verified Purchaser
Texas
Durability   Ease of Installation   Performance   Power   Style  
Good product

Easy fit,more power, nice sound.

1proudpapa
Canton, OH, USA
Durability   Ease of Installation   Performance   Power   Style  
Making your son smile....PRICELESS !!!!

Easy installation, sounds great, more power, and my son loves it !!!

Jobajoe
Verified Purchaser
Pleasanton, CA, USA
Durability   Ease of Installation   Performance   Power   Style  
Pro Circuit Shorty Silencer

I bought this for my son's cr250 hoping that it would give a little more power at his hill climb competition, but didn't notice much difference at all from the forest approved spark arrester silencer.

derrdyz
Waldorf, MD, USA
Durability   Ease of Installation   Performance   Power   Style  
Great pipe

this pipe is great, if you only or still have stock exhaust on your bike, if you buy this pipe you will notice a big difference in power. it has a nice sound to it, looks great on the bike and it was easy to install , i have this paired up with the pro circuit platinum pipe on my yz 85 ,,huge power gains. this just makes the bike rip even harder. great pipe, and in my opinion its better than fmf

Cape Cod, MA
Durability   Ease of Installation   Performance   Power   Style  
Great Silencer BUT

great siencer lighter, louder, and gives it a bit more lower end grunt. the only problem is i need to re jet my carb because my jets are stock and its making me foul plugs quick so i would suggest getting a re jet kit with this silencer

RobG99
NJ
Durability   Ease of Installation   Performance   Power   Style  
Big improvement over stock

I bought this silencer for my 2007 CR 125 which I use for Hare Scrambles. It replaced the stock silencer which eventually started to sound beat up and "ratty", even with fresh packing.

Installation required a bit of shimmying to get things all in place, but it took no more than five minutes to install the silencer. The pipe seems to hold up very well to the abuse dealt by woods racing; soap, water and a sponge will restore the silencer to brand new condition. I haven't seen any dings or scratches from rocks, which I am sure have been hitting it.

The R-304 Shorty performs exactly as advertised, it increases power in the low end of the power band. The increase in power is very noticeable, and a big help for GNCC's and Hare Scrambles. If you race motocross, the regular R-304 would be a better choice for it's ability to increase power in the mid to top end.

Overall the R-304 Shorty silencer is an excellent choice for a two stroke silencer, it's lightweight, powerful, sounds great and is relatively inexpensive; and paired with the Pro Circuit Platinum pipe it works even better.

brapaholic451
Verified Purchaser
pa
Durability   Ease of Installation   Performance   Power   Style  
The best slincer i ever bought

I love the slincer. It gave my cr125r more power. The slincer is louder than stock but i love it. Never will regret buying this slincer.

pro-circuit r304
Magooevans
Verified Purchaser
Bedford, Pa
Ease of Installation   Style  
Will not work on 2008 KX100

This silencer will not work on a 2008 KX100 . Thats the only reason it gets one star for installation cause it don't fit . I liked it just couldn't use it . This silencer is made to come around the right side of the bike mine goes around the left side .

motoglenn
Verified Purchaser
Madison, Wi
Durability   Ease of Installation   Performance   Power   Style  
Silencer 2012 yz125

Swapped out stock silencer for this one. Lighter than stock and gives it a little more power down low. Really nice sound also. Mates up nicely to stock pipe. Overall very happy with this.

beaugt
pocatello idaho
Good Buy!

02 yz 250, fit was great and sounds so nice!

1-20 of 32

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19 Questions
Answered:   19
Not Yet:   0
Q: Is this pipe pre packed and everything? When I get the pipe will it be ready to put on my bike?
2 days 5 hours ago
MotoSportExpert
Expert MotoSport Staff
2 days 4 hours ago
A: Yes the Silencers all come packed and ready to go.
jess
Q: R304?
1 month ago
I have a stock 2016 kx 100 and I'm looking the get the r304, will I need to rejet my bike in order to have the r304 on it?
MotoSportExpert
MotoSport Staff Expert
1 month ago
A: No, you likely will not need any changes. Normally when installing a slip-on only minor jetting changes are needed, if any at all. If your bike is currently jetted properly you will likely not have to make any changes after installing this PC silencer. I would recommend installing the exhaust and riding the bike to see how it is running then tuning your carburetor from there if necessary.
Bill
Q: Will this fit a stock 2015 YZ 250 header?
1 month 7 days ago
MotoSportExpert
Expert MotoSport Staff
1 month 7 days ago
A: You should have no problems running the Pro Circuit R 304 Shorty Silencer with the stock pipe on your 2015 Yamaha YZ125.
stan
Location: New York, NY, USA
Q: Will this pro circuit r 304 shorty silencer fit on my 2007 kx85 because the pipe is on the left side.?
4 months 11 days ago
MotoSportExpert
MotoSport Staff Expert
4 months 11 days ago
A: Yes. 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.
eric
Q: Was wondering how this would fit on my 2016 husqvarna tc 250 with stock pipe?
Over 9 months ago
MotoSportExpert
Expert MotoSport Staff
Over 9 months ago
A: The Pro Circuit R 304 Shorty Silencer would work great on your 2016 Husqvarna TC250. 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.
adamrides646
Location: Billings, MT, USA
Q: Shorty or regular?
Over 10 months ago
I ride a 2014 KTM 250 XC-W (E-start) I mainly ride tight wooded trails and cross country enduro. I love the bottom end on the bike (stock exhaust at the moment) should I get the regular sized R304 or the shorty? Also was wondering if the silencer will fit on the stock expansion chamber? will most likely upgrade to the Platinum 2 pipe in time, or should I just buy the full system all at once to avoid more rejetting?
MotoSportExpert
MotoSport Staff Expert
Over 10 months ago
A: The Shorty will give you more throttle response and low end power. Because it's smaller you'll see even more weight savings and a louder sound level. The Pro Circuit Factory 304 Silencer Improves top-end power. If you are riding in areas that require a U.S. Forest Service approved spark arrestor you would want to go with the Pro Circuit Type 296 Spark Arrestor.
Fitment with the stock pipe can not be guaranteed, but you shouldn't have a problem. And as far as jetting It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting.
Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Isaiah
Q: If I bore out my cr85 with pro circuit r-304 pipe and silencer will it need re jeted?
1 year ago
MotoSportExpert
Expert MotoSport Staff
1 year ago
A: Most likely you will need to re-jet. There is not a specific setting I could give you for jetting your bike. It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a local motorcycle dealership’s service department to have your bike properly jetted.
guido
Q: Pro circut r304?
1 year 1 month ago
A stock 125 has 2 mounts for the silencer to fit on, this shorty has only 1 mount.? It says it fits my 01 yz 125 but I'm just confused.
MotoSportExpert
MotoSport Staff Expert
1 year 1 month ago
A: The image is a generic image supplied by the manufacturer for reference only. It may not be displaying the exact part for your bike. 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.
trevor
Q: If I have a fmf fatty and am looking on this would they fit together ?
1 year 1 month ago
MotoSportExpert
Expert MotoSport Staff
1 year 1 month ago
A: For your 2005 Kawasaki KX85 the Pro Circuit R 304 Shorty Silencer should bolt to the FMF fatty no problem.
Tooslow99
Location: California
Q: Does this come with a spark arrestor?
1 year 3 months ago
MotoSportExpert
MotoSport Staff Expert
1 year 3 months ago
A: No the Pro Circuit R 304 Shorty does not have a spark arrestor screen.
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