things that make you go hmmmmm......

In the let's think about that category,

It has been said

"The extra fuel weight of the MXC causes it to push into corners"

and at the same time

"The MXC tank is too wide to transfer your weight all the way foward"

I propose that you will not have to work as hard on the MXC because you weight is already fairly well balanced

Hmmmmm..... If you transfer all of your lead butt weight foward on your EXC, won't the front end push like the 'overweight' MXC?

Can you have your cake and eat it too?....

Just trying to start something.. :)

(keep it friendly!)


Steve ( 01' 520MXC 1992 Oregon cross country & ISDE 4stroke state champ (When 4strokes were made with solid 24carat lead)

I have both tanks for my EXC,Ikept the EXC tank thinking I would use it when range was not an issue. The MXC tank is marginally wider than the EXC tank. You would have to get way down beside the rad to notice the difference. Probably motocrossers would be bothered by the extra width,but woods type riding doesn't pose a problem.For aggressive woods riding or hare-scrambles competition the difference is not noticable,but the extra range sure is.The only time the EXC tank goes back on will be when I sell the bike and then put the good tank on the new bike. :)


400 EXC--stock&great

YAMAHA 250--sold

250 sherco

I owned an MXC tank for a short period. I went back to the EXC tank after one long day in tight conditions. I was able to compare it back to back with my buddies sister 01 400EXC and that was the biggest eye opener.

I ride forward a lot. Elbows up, riding the front wheel in tight woods. That's how I go fast. With the MXC tank, I had a lot more trouble staying forward. I could move forward okay but I couldn't stay there for long as it wants to push me back. So I burned a lot of energy constantly scooting up. When the woods open up enough to allow standing the difference was less noticeable but it's still wider at the tank seat junction.

I wear custom knee braces for preventive measures and that probably aggrevated the experience for me as they push my knees out and inch or more on each side. In one very tight corner that day, I kept hitting my left knee on a tree that no one else was hitting. On the two loops with the EXC tank, I never touched it.

My fuel range with the EXC tank is good enough for any enduros and any hare scrambles that cover about 50 miles or less, which is most of them where I live.


John Brunsgaard

01 400 EXC, 99 250 EXC (gone), 99 200 EXC, 98 125 EXC, 98 380 MXC (long gone)

Ditto John, I tried the MXC tank this week and it does seem to be a little wider at the seat/tank junction, however I'd have to say that it really didn't affect my ability to get my weight forward or affect my riding at all.

This said, I have already put the EXC tank back on (my avg. rides between fuel stops is only about 30 Mi.) & only plan on using the MXC when riding in areas where I need the extra mileage.

The natural color of the EXC makes it great for checking fuel level!


Joe Bohazi

'01 520 EXC, '99 640 LC4

If In Doubt "Gas It"

[This message has been edited by Joe B (edited 07-27-2001).]

Hi Joe,

Glad to hear you got the tank okay. If I had opportunities like you did for longer rides, I'd have kept the tank. I've never ridden anywhere where I was more than 20 miles from the truck, though.


John Brunsgaard

01 400 EXC, 99 250 EXC (gone), 99 200 EXC, 98 125 EXC, 98 380 MXC (long gone)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By Ponch
      I have a 2007 450 EXC that I recently installed a new clutch slave cylinder on. Per the 2007 KTM service manual it clearly states that the clutch needs to be filled with hydraulic oil, which I did (magura blood). That was yesterday. I went out to double check the level today and when I removed the cover, the rubber seal was all contorted and out of shape. I then looked at the cover and it's a Brembo clutch and says "DOT 4 brake fluid only".
      I flushed the line and the master cylinder about 7 times with DOT 4 brake fluid and there was no sign of the magura blood left in the system. My question is: other than the rubber boot on the master cylinder, what damage might have been done by putting in the hydraulic oil? It was in for about 24 hours.
      Thanks in advance for any advice!
    • By pumpernickelBrad
      Hi Folks!

      Sorry if there are a bunch of threads already but I used the site's search function and didn't find anything so far...

      I just found a decent deal on a '14 350 EXC-F with 11k km (unknown hours). Has a few goodies including skid plate, hand guards and it's for sale for about $2k CAD less than a '16 with 6k km on it.
      The bike is in showroom condition (appearance) with no indication it has been offroad at all.

      What would be the gotchas that would make this deal realistic? I'm coming from a WR250R where the engine lasts forever, is 11k street kms high for these bikes? 
      Are there any big defects in the '14s that I haven't dug up yet?
      With no service records what things should be done, checked, etc?
    • By Brannnt
      I purchased an '06 525 EXC some time ago, and recently pulled the motor out of the frame to address some other issues. When I removed the clutch slave cylinder, I noticed an issue the previous owner neglected to tell me about during the purchase.
      It appears that at some point, the chain broke and damaged the engine case near the clutch slave cylinder (see pics, please). I have noticed that the clutch does not fully disengage (bike lurches a bit going into gear, neutral is hard to find... its worse when engine is cold) ... I did not notice any leaks around this area (mineral oil or engine oil) before or during disassembly. 
      The previous owner (or someone) repaired it with some sort of epoxy.
      Without doing my due diligence (checking clutch fluid level, bleeding) I hesitate to state that this is the cause of my clutch disengagement issue ... but pardon my ignorance here and help me out: How bad is this?  Am I looking at replacing my engine case here or is the previous owner's jerry rig good enough?

    • By Black Sox
      Just bought a new 2017 350 excf ,will be doing 98% off road ,ordered skid plate bark busters ,
      my ? Is what's the best easiest way to eliminate rear fender light assembly.I still would like to have a break light.
      xcf fender will fit so dealer says,under $50.00 👍But xcf brake light $125.00 .👎What's the best economical way of doing this?
    • By JNV
      Hi friends from Spain.
      Mi new KTM