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
- 32 Reviews
- 19 Questions
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.
Love the sound and power over fmf but the pc doesn't bolt up with fmf fatty
Awesome power were you need it!!
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.
The R304 silencer is my favorite 2 stroke silencer. They really have the sound I like. Fits perfect and looks good. 2001 CR125.
Amazing, just what son wanted & more
The sound is amazing and easy to repack. Easy to reassemble with no fitment concern seen in other brands.
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!
Adds some bottom end not to much but you can defiantly feel it going up a hill! Great Pipe!
Looks good, sounds good and gives a nice performance boost.
Easy fit,more power, nice sound.
Easy installation, sounds great, more power, and my son loves it !!!
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.
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
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
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.
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.
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 .
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.
02 yz 250, fit was great and sounds so nice!
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.