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Old 04-13-2012, 01:43 PM   #1
jnberr0 OP
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2006 KTM 400 EXC: Opinions?

I may sell off my 2005 CRF250X and get a 2006 400EXC instead. Anything I should be aware of, run from, etc...? The KTM is well maintained, street legal with a Rekluse clutch, radiator fan, etc... We mostly do slow single-track on pretty tight, hilly land.

What say you?
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Old 04-13-2012, 02:02 PM   #2
wide
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Well one thing for sure it will piss all over that CRF!!!
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Old 04-13-2012, 02:05 PM   #3
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That wouldn't be bad! :)

I love my 250, but a little more grunt is never a bad thing.
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Old 04-13-2012, 02:16 PM   #4
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I just traded a DRZ400 for an '06 450 EXC. Love the change! The 6-speed EXC is a much better dual sport.

I've added the fan kit, 1.8 radiator cap, and overflow bottle to prevent the big coolant "burp" you get with the stock setup.
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Old 04-13-2012, 02:23 PM   #5
LukasM
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Excellent bike, by that year all the issues were long worked out and the engine is bullet proof. If you have a rad fan the only other thing I would ride for slow riding is a radiator overflow tank, RLR products makes a great one that fits the EXC perfectly.

If at some point you feel like you need more power - not too likely for slow and tight single track - you can put a 525 EXC (95mm) cylinder and a special piston from Thumper Racing on there to build a 453, which is often referred to as "the best engine KTM never built".
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Old 04-13-2012, 02:50 PM   #6
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Quote:
Originally Posted by LukasM View Post
Excellent bike, by that year all the issues were long worked out and the engine is bullet proof. If you have a rad fan the only other thing I would ride for slow riding is a radiator overflow tank, RLR products makes a great one that fits the EXC perfectly.

If at some point you feel like you need more power - not too likely for slow and tight single track - you can put a 525 EXC (95mm) cylinder and a special piston from Thumper Racing on there to build a 453, which is often referred to as "the best engine KTM never built".
Personally, I love the 450 motor the way it is. Especially after coming off a DRZ400. Great low end torque that allows you to crawl, and a nice mid-range pull for passing cages in the canyon.
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Old 04-13-2012, 05:33 PM   #7
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Great advice, guys!

Keep it coming...sounds like this might be a solid bike.
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Old 04-13-2012, 05:58 PM   #8
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I'm already missing the 2002 400EXC I just sold. The 400 is a great bike. I bought it within 4 days of selling my KDX220. I know the 400 is 25 pounds heavier, but it handled just like it was the same weight as the KDX. The power is hard to get used to. There's no real hit anywhere, but the power is always there - just distributed evenly throughout the range. It hooks up everywhere. I was never tired after riding it.
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Old 04-14-2012, 01:25 AM   #9
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One thing worth noting is the CRF is a fabulous bike............ if you do some enduros and you use a van to an area ride around for the day and jump in the van to get home, nothing short of stunning fun..... as most bikes are. The 400 in the RFS form is awesome, easy to maintain and has a gearbox to die for. Forget the van just go out for a ride, if theres an area you want to explore 30 miles from your front door, the KTM will get you there, at a speed that means it doesnt take forever, and that you not flogging the guts out of it. Then once your off road, it wont be one bit slower than your CRF.
You could even consider it as a modern day DR350, that needs just a touch more maintenance, but nothing scary
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Old 04-14-2012, 09:01 AM   #10
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I have an 06 400exc. Fantastic bike. Great bike for ST and I also have a big 6.6 gallon tank I throw on there for longer DS rides. Good do all dirt bike, as are they 450's and 525's.

Just did top end on mine with 275 hours and put Kibblewhite's in it as well. Should go 500 hours I reckon.
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Old 04-16-2012, 09:02 AM   #11
jnberr0 OP
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Sounds great, y'all. Sounds like this is a good choice. I'll update the thread if I pull the trigger. Any other advice on 400EXC or RFS motors in general is always appreciated. Getting a clear walkthrough on valve adjustments would also be VERY helpful, although I'm already liking the tappets on the KTM vs. the shim/bucket set-up on the 250X!
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Old 12-21-2012, 02:10 PM   #12
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The 06 400EXC is a shortstroke engine,different from older 400's. I had one and got it plated. Ive since switched to a 530.
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Old 12-21-2012, 10:29 PM   #13
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02-07 KTM RFS bikes remain some of the best DS bikes made to this day.

Buy it without hesitation or worry.
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Old 12-22-2012, 12:55 AM   #14
MORT666
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KTM 400 exc good bike light plenty of power for off road.
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Old 12-22-2012, 02:49 AM   #15
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Quote:
Originally Posted by jnberr0 View Post
I may sell off my 2005 CRF250X and get a 2006 400EXC instead. Anything I should be aware of, run from, etc...? The KTM is well maintained, street legal with a Rekluse clutch, radiator fan, etc... We mostly do slow single-track on pretty tight, hilly land.

What say you?
Great bikes, short stroke, feel lighter than they are, nice usable power at all rpm‘s without power hits, low vibe engine, great 6 speed wide ratio gearbox, reliable for a race bike.

I liked my exc 400 better than the exc 520 off road, it handled better and felt lighter. The engine is a gem, very usable and friendly but plenty powerful.

Not much to look out for on the RFS 2006 models.
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