Mrx01, Mr9 ,or U4.2?

[oj250r]

which of these are the best fuel to run.. ive been reading on vp site and they all seem the same almost.. i know the pros run mrx01 and u4 a year or two ago but what do you guys thinks?? any feedback would be appreciated

[quadboy38]

if you can afford to run mxr01 that is the best fuel out there

[FHKracingZ]

I would run MR11 over mrx01 but thats just a preference. The original U4 is amazing but they discountinued it because it was to good and was causing there other fuels not to sell because U4 was one of the cheapest oxygenated fuels..U4.2 on a dyno yields NO gain over regular 93 octane.. It just smells good.

[xsr_racing28c]

I've got a barrel of MRX01 that I'll be running in my race bike ( 09 KTM SX ) and from the dyno runs on my team mates quad we've seen alot of gains with this fuel. Just expensive!!!

In my practice bike I'll just stick to C12...

Thanks, Jay

[416exfreak]

I used to run C12 in my 440, but Ive switched to U4.2.

It deffinately feels like it has snappier throttle response, pulls harder, and it keeps my oil MUCH cleaner.

Rocket Factory recommended U4.2 for my dads 720 stroker raptor, they told him it made more power than C12.:ermm: