Nick
grahamsville, NY
06' rmz
Great pipe. Made good power at a low db level. Would highly recommend for noise restriction areas.
JW Courtney
Baton Rouge, LA
Q4 slip on
The best thing about the Q4 is the sound. Not too loud but a nice low growl. It really opens up the exhaust over stock. Coupled with the FMF header and the FMF power programmer it's a good improvement. Though a little pricey for the amount of HP gain. Not sure how well it would work if you didn't also get the FMF programmer to remap the fuel.
Steven Graham
Eureka, CA
Q4 slip on exhaust
The pipe did the job of quieting down the bike.
Michael R. Snover
Merrillville, IN
FMF - Q4 Slip-On Exhaust On 2008 Yamaha WR250X
Super easy to install, instructions were straight forward. Sound is somewhat louder than stock. (I LIKE IT!)
Seat of the pants power is better. (Now can lift front wheel in 1st and 2nd with no problem)Spark plug is light brown, no need to remap the FI. Only problem I see is that there is a leak where the exhaust pipe and the Muffle shell met. Has some gas and condensate escaping.
Aaron Oberlitner
Kalispell, MT
Amazing Pipe!!!!!
When I put this pipe on my new wr 250f in addition to the other performance upgrades that I have done with this bike this upgrade is the real winner it is quiet yet sounds great and is pretty fast looking and feeling and also looks really trick.
Bill Milligan
Shasta Lake, CA
FMF - Q4 Slip-On Exhaust
Q4 slip-on is quiet as advertised, noticable gain in power. This slip-on rocks.
Paul
burbank, IL
Q4=WOW
After doing most other performance upgrades on my WR450, this was the real winner. Instant power increase without much more noise, then uncorked stock. I am very happy with the choice.