KTM LC4 400? Is it a good bike?

Discussion in 'Thumpers' started by rokklym, Nov 27, 2005.

  1. rokklym

    rokklym one man wolfpack

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    I just found a 2001 KTM LC4 400 for sale and I'm seriously considering getting it if its a good bike but I really don't know anything about these.

    Anyone know details about these bikes, or known problems. Would this be a DRZ with better components?
    #1
  2. clintnz

    clintnz Trans-Global Chook Chaser

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    Yup, they're a good bike. A lil' heavier than a DRZ but more comfy on the road. As the LC4 640 is essentially the same but with more grunt most people go for the 640 over a 400.
    Most people replace the failure prone mainshaft bearing on 640's of that era with the updated roller bearing, I assume that would apply to the 400 also.

    Cheers
    Clint
    #2
  3. ram1000

    ram1000 Long timer

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    I had a 1995 400 and have a 2002 640. I have also ridden a DRZand KLX 400. The DRZ is a much better bike than my 400 KTM was. The 400 is heavy although not as much as my 2002 LC4. It had less power than the DRZ400 offroad model I rode. The DRZ felt much smaller and manuverable, the KTM made you feel like you needed to be in control always. The KTM may have the advantage in suspension but not enough that you couldn't upgrade the DRZ to match.
    #3
  4. rokklym

    rokklym one man wolfpack

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    Thanks for the info.
    I think I'd be happier with the extra grunt of the 640.
    #4
  5. HighwayChile

    HighwayChile greetings from Wa state

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    -the 400 is the most over built 400 ever made. i had a 2001.
    -other then a skid plate ( $75? ) its good to go out of the box, the DRZ can suck $$ on doo-dads
    -the drzs is only 5-7 lbs lighter, the 640 vibrates the LC4-400 doesnt.
    -the LC4-400 can really be opened up by re-jetting, see ktmtalk for details,
    -the 5 gal tank w/ the 400 goes along ways.
    -the quality of components of the ktm is second to none. park one next to a DRZ, look at the hubs, spokes etc.....the drz is a great bike But if you need the quality, you'll pay Big time.

    as mentioned be aware of the main bearing issue.oil change is a pain in the ass.

    I think it handles rock solid, in tight riding you can ride easier and faster then a 640.
    the plastic is way cheap.they tend to be cheap compared to 640, if your looking at a 640, consider a ATK 605,
    #5
  6. Pezz_gs

    Pezz_gs Cant ride for crap

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    What parts are interchangeable between the 400 and the 640 LC4

    The 400 runs a 64mm stroke and 89mm Bore = 398
    The 640 runs a 78mm stroke and 101mm Bore = 625

    The 400 running a 101 Barrel and 64 stroke gives 513cc
    The 400 running the 89mm barrel & 78mm stroke gives 625cc - interesting

    The 400's seem so cheap to buy here on Oz?? Might be a good project bike??

    Pezz :)
    #6
  7. dirty dave

    dirty dave Banned

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    ill take the number of the 400 if your not interested...im in the neighborhood(wi) dirtymotodave@sbcglobal.net
    #7
  8. 2whlrcr

    2whlrcr gooligan

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    Rokklym, where have you been? Hadn't seen any posts from you for quite awhile, now your back again.

    As others have stated above, the 400 and 640 were identical except for bore and stroke. The 400 might make a better trail bike, because the motor is softer, but IMHO the 640 would be superior in every other arena.

    I just gear mine down one tooth on the CS, if I'm anticipating mostly dirt roads or trails. This is what I ran at the Big Woods and Enduraid runs.

    I'm still thinking about the new Husky, but will probably keep my Adventure for at least another year.
    #8
  9. rokklym

    rokklym one man wolfpack

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    #9
  10. BAMABACKCOUNTRY

    BAMABACKCOUNTRY n00b

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    Hey gents. So, brand new here. I just picked up a '93 EXC/LC4 400 also. I really like it so far but haven't gotten to ride it very much. I had a mechanic friend of mine who works at Harley look it over and he said from what he can tell and hear that it sounds really solid and gently used....... My big questions are; What are the week areas of the bikes(mechanically), and how capable are they in performing long trecks like the TAT? Thanks very much for any info and wisdom you can send my way.
    #10
  11. el capitan

    el capitan Been here awhile

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    The KTM LC4 400 is probably the most overengineered bike in its class. Everything was designed to withstand the weight and power of the 640. If not tuned to the max (or equipped with a 640 engine) the 400 should last forever, as long as you donĀ“t get crankshaft bearing problems.
    If you can get along with appox. 28-32 HP the bike should do the TAT without a hiccup.
    #11
    CoatsEast and BAMABACKCOUNTRY like this.
  12. matty86suk

    matty86suk Buccaneer

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    I have a 96 400 lc4, 9400 miles. From what I've read, cam bearings fail early, same with one of the transmission main bearings. Like stated, the 400 was built on the 620 bottom end, so very under stressed. How many miles on your bike? What carb does it have? I bought my 400 with the edlebrock carb but swapped on a bst40 from a DR, I've been very happy with the bike so far. I plan on tearing the engine down this winter to replace suspect bearings, rings, clutch, etc. I've owned a drz400 and the KTM feels a bit more top heavy, doesn't turn as well, and the gap between 1st and 2nd is too large on the lc4. The KTM feels it has slightly more power vs. the drz400. I currently run 14/50 gearing but might find a 52 to make 2nd a bit more usable on my trails.
    My bike...
    [​IMG]
    #12
  13. BAMABACKCOUNTRY

    BAMABACKCOUNTRY n00b

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    I'm not sure how many miles. It has an odometer with 912 hours. I'm sure that's rolled ove a couple times though. Not sure on the carb either. It's getting the forks built right now. I'll find out when I get it from the shop. You're bike looks super clean for the year btw. I dig it.
    #13