i pulled this exhaust outta the box and its way awesome! Easy install, with no problems, The performance of this exhaust is sweet, i put the 4.1 duals an a 2007 honda crf250r and changed the sprocket from a factory 51 tooth to a 50 tooth and man you can feel the power difference. Sounds awesome too! MEGA BOMB header is next! FMF ROCKS!!!!!!!!!!!!
FMF Factory 4.1 Slip-On Exhaust - Dual [obs]
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These pipes look great out of the box. Once you put them on they are a total let down. they virtually cut your bikes power in half and shorten every gear length second feels like first and third feels like second and so on. they are great to look at but dont help if you keep the 94db. insert in it helps with the power some but still is noticibly less power id recomend pro circut or a single drd or leo vince exaust
I bought these pipes hoping to get a little more out of my 2007 Honda CRF 250R, but they made the bikes power decrease! It feels like the gear length is completely shortened, second gear feels like first, third gear feels like second, fourth gear feels like third and fifth feels like fourth. The only good thing about these pipes is that they make my bike look cooler.
I bought these thinking they would be great and add a little to the bike, the only thing it did good was save weight. Everything else it was a let down on.
It seemed to have taken power away from the bike, 3rd felt like 2nd and 4th felt like 3rd and so on. Quite a shame, they seemed absolutely wonderful before I rode it for the first time. I instantly noticed a horrible difference in power. It is way less enjoyable to ride. So bad, that I might put the stock ones back on.
Maybe I've gotten something wrong here, or this is normal for them...
They do look AMAZING and sound AMAZING though, very well built
not whats in the pic, way cooler. however, it doesnt fit with the stock gaskets, i recommend a flathead screwdriver and a hammer to "chisel" them off. then it fits very well doesnt require any sealant for riding after you remove the gaskets and slip it on. fmf does sell a hi temp sealant if you want to run sealant though.
These pipes look sweet ,sound awesome and seem to give power gains.
Great exhaust system, i am empressed with the FMF Ttanium 4.1 dual slip on, sounds sick
A two stroke running a little rich on the oil ratio will saturate the silencing media very quickly. On a big bore four frequent high speed riding will also shorten the life of the media. Also you should not allow water to enter the silencer outlet while washing your bike or ATV.
Let your ears be the guide.