Is the White Bros. Rev kit worth the money?
How are the performance gains?
What is the stock main jet in the 400EX?

Randy '99 400EX

 

I've heard that white brothers is ok but tc racing is alot better and the stock main is 148 i think just take it out and it should be written on the side of it

 

I HEARED THAT WB REV KIT WORKS GOOD AND IS ONE OF THE BETTER ONES OUT THERE! THE STOCK JETTING IS
#148.


99-426-EX = POWER

 

I Have a White Bro's Rev Limiter,and it made a big differance,like it gives 1200rpm throughout the whole power band.148 stock main jet,I have a 155 in mine.7-1"holes w/filters in air box lid.
00 400ex,fmf powercore-4,K&N filter

 

Hey guys, where can I get a Ct rev limiter and how much is it.

 

Just buy a XR250 rev box it is the same thing.
I use it on my 400 and I have no problems..

 

If you haven't made any internal engine mods, I would say no, don't use it. You really aren't making any power up there anyway, just upshift. I just installed the Web-Cam midrange cam. Now I am thinking about adding the rev box. The engine will rev right into the limiter pretty easy now, still making power at the higher RPM.

I have also heard that the WB unit is just an XR250 Ignition Box.

 

99exrider:

Can you help me with the information I believe what you say, so I want to buy one of those units of the XR, what year the XR should be? and do you have the Honda part number??

It is a rev box, or a ignition unit??

Thanks alot for the information.

 

I bought a CT racing revlimiter and it comes from the same manufacturer who makes all of Hondas. I was told that it was the same as WB's without their markup$$$$$. I would bet that they both get theirs from honda or the oem. This mod came out fast so it had to be an off the shelf item.

99 426ex , Web Cam, FCR carb, CT revlimiter, DMC exhaust, XCT's ,K&N, One kit,

http://www.trxoutlawz.com/

 

I bought a CT racing revlimiter and it comes from the same manufacturer who makes all of Hondas. I was told that it was the same as WB's without their markup$$$$$. I would bet that they both get theirs from honda or the oem. This mod came out fast so it had to be an off the shelf item.

99 426ex , Web Cam, FCR carb, CT revlimiter, DMC exhaust, XCT's ,K&N, One kit,

http://www.trxoutlawz.com/