just bought a KTM 625 SXC and have a few questions

Discussion in 'Thumpers' started by micah360, Mar 10, 2013.

  1. micah360

    micah360 Been here awhile

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    Well, the KLR was just too boring for me (I tried and tried and tried to make it into a more exciting bike, but it never did it for me), so I traded the KLR in on this 2004 KTM 625 SXC and have a couple of questions.

    1. CUSH DRIVE. I'm pretty sure this bike does not have one. What are the benefits of having one vs not. Is that something that can be added later. Do I need a whole new hub for something like that. Can I get by without one?

    2. OIL CAPACITY. I know this bike's oil capacity is lower than the 640s. What is the main negative on that? Does that just mean that the oil will get dirty quicker and require more frequent changes? About how many miles between changes is regular on this bike?

    This thing is a kick in the pants to drive though... man! It's my first KTM and I never understood that the quality of parts, fitment and workmanship was so nice, until now. It is a little tall for me though, but I don't think I want to lower it, but we'll see how many times I drop it first...


    [​IMG]
    #1
  2. Grreatdog

    Grreatdog Long timer

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    I wouldn't sweat the cush hub. If you are going to worry anyway, there are cush sprockets. Google is your friend for those. But I know a couple of guys that have put a lot of street miles on SXC's without any trouble. The guy below rode his about as hard as you can without any issues.

    I also wouldn't sweat the oil capacity for basically the same reason. It seems like every KTM owners manual is a little different on capacity. But it will only be a few tenths less than than my E. Instead of the frame tank and spin on filter it has a piggyback filter that holds a decent amount of oil. Should be the round thing between your kickstarter and frame in that picture.

    Enjoy. That is about the most entertaining bike I have ever ridden. To me, it splits EXC dirt goodness and Japanese 650 street goodness perfectly. With a decent seat it makes a damned good long haul dual sport that still has pretty serious trail ability. That is the bike and even the year that orginally sold me on the orange Koolaid.

    [​IMG]
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  3. It'sNotTheBike

    It'sNotTheBike Banned

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    I think there is a chance that your bike actually does have a cush
    drive hub. If you can post some photos of the rear hub from the right rear
    side of the bike we can tell by looking whether it's cush drive or not. We need
    to see what the hub looks like behind the rear sprocket.


    The benefit of the cush drive is that it absorbs some of the shocks which pass
    through the driveline when the bike is being ridden. A big single cylinder engine
    makes driveline shocks which are worse than the shocks which a multi cylinder
    engine makes ( they don't call them thumpers for nothing). Such driveline shocks
    can result in damage to the splines on the countershaft ( this is a known issue with
    the Honda XR650L ) and possibly also damage to other internal transmission parts.
    I'm not saying damage WILL happen, but a cush drive hub reduces the probability
    such damage will happen and that is why some bikes come with them.



    If you want to add one, the cush drive is in the hub itself, so you would
    need to either buy a hub and lace it to your old rim or buy a complete
    wheel assembly which has a cush drive hub.


    Last time I looked into those cush sprockets ( I am referring to the ones
    which were made in Australia ) there were reports of sprocket failure
    which sounded like something I would prefer to avoid. It is possible they
    have worked out the bugs by now but the design of the cush sprocket
    requires that the cush mechanism is contained in a relatively small area
    which means the shock loading will be concentrated over a smaller area and that
    makes me skeptical that a cush sprocket will work well on a bike which
    has a lot of torque like your 625 does. I'd much rather have a cush hub ;
    the cush rubbers do need to be replaced periodically but they are not
    something which can cause a sudden failure without plenty of prior warning
    and so are a very reliable method of absorbing driveline shock.



    .
    #3
  4. micah360

    micah360 Been here awhile

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    here's a shot from the backside. Can you tell from this?

    [​IMG]
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  5. It'sNotTheBike

    It'sNotTheBike Banned

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    I guessed wrong :-(

    You do not have a cush drive.

    With a cush drive the rear sprocket bolts to a "carrier"
    which then fits into the hub which holds the rubber dampers.


    Look at post # 18 on the web page below and you can
    see a nice photo of an aftermarket hub which has a cush
    drive for a KTM 530.


    http://advrider.com/forums/showthread.php?p=14070623


    .
    #5
  6. micah360

    micah360 Been here awhile

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    gotcha... thanks.

    I was looking at those Kush Sprockets and I guess they have a new design/generation out because the previous ones were failing.

    BUT.. Woody's Wheel works is local to me so maybe I'll call them and see if they have any options for me. They probably have lots of take-off KTM wheels in there.
    #6
  7. gnuttis

    gnuttis Been here awhile

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    The only 625SXC who got the cush drive was the 2007 the last year with the old LC4 engine before the 690enduro enter 2008. Put a offroad wheel with cushdrive from a 620/640 it will fit. The problem many had with the SXC was that the chain broke down because SXC was built for offroad roads and not tarmac. Is good for your gearbox.

    About the engineoil it,s the same as 640 2,1liters. 625-02 and the 660-03 got the 1,6 liters. The have the same place for the inner oilfilter on the right side down where the brakepedal is and other filter behind the cylinder.

    I got the 640-01, 625-02, 660-03, 625-04 and 400-98 with the old LC4 until I bought 690EnduroR -11 & rode the Tuareg Rallye with it the sold it :(. I really like the 625, my girlfriend sold her 640SM last year and bought a 625SXC -04 about 2 days ago. Hmmm she knows that I,am going to try drive her KTM instead of my XT660R :)

    Nice you got the 18liters tank but with 12liters it feels so much smaller but the orginal 9liters is a nice but not for long trips. Try find a plate under the engine and frameguards like this!
    http://www.ebay.de/itm/KTM-LC4-LC-4...67?pt=UK_Motorcycle_Parts&hash=item5aeed8499b
    #7
  8. Ned1

    Ned1 Lend Me Yu Choppa

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    That SXC looks good.

    Though the clutch basket is damped (cool feature) cush wheel is needed if it's going to see much pavement with a heavy wrist.

    Oil is about 1500ml, keep it clean. I did about 750 to 1200mi intervals depending on conditions, how hot my motor got and how hard I ran the motor.

    I made it to over 35k miles on my '04 before I sold it. Damn fun bike, enjoy yours!

    PS, make sure you run the chain good and loose. When everyone is saying it looks too loose and to tighten it up, you've probably got it just right.
    #8
  9. gnuttis

    gnuttis Been here awhile

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    EDIT: Strange that USA model only have 1,6 liters and EU model have 2,1 liters about the oil. micah360 do you have any kind of black oil filter front of the cylinder?

    Here is a 625-02
    http://image.annonsborsen.se/raw/1006000/1006958_1.jpg

    You can see behind the cylinder the extra oil filter. On you 625 you have the electric starter so why does KTM put only one filter and 1,6 liters is weird!
    #9
  10. micah360

    micah360 Been here awhile

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    it has 2 oil filters. One towards the back, behind the kickstarter, and another one on the other side of the engine down by the brake pedal.
    #10
  11. davesupreme

    davesupreme grand poobah

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    you don't have a cush drive.... but i think that's already been said....

    ride one w/a cush drive on asphalt, back to back w/yours, and your question will be answered....:deal.... no question, really.... zack at woody's hooked me up w/nice used parts that i strung up myself, good stuff....

    sweet lookin' bike!....
    #11
  12. gnuttis

    gnuttis Been here awhile

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    Ooooh I saw the filter now in front of the WP shock ;)

    Skickat från min GT-I9100 via Tapatalk 2
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  13. wrk2surf

    wrk2surf on the gas or brakes

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    My bike started as a 625 sxc.. There a few things you should do including the cush wheel. I ride very hard and demolished one hub and cracked another and have heard of many failures.
    Get an 02 LC4 or 640 Adventure wheel complete with the sprocket carrier they come in a 2 1/2 in (wider) rim in silver. If you try to just buy the hub you will need different spokes.
    First off before anything do it yourself or have a valve job done to see where you are at.You should also change the oil frequently (under 2000 mi).
    I would also rebuld the 10.5 Magura clutch master plunger and the lever insert to avoid slop as well as a new Oring on the Slave and when in there make sure to put in new fluid and bleed.

    Other than that ride the shit out of it and when you want upgrades or have any issues use this dedicated thread to solve them. Anything that will happen to your bike has already happened to some one else here so we can help you KTM KOOL AID addiction!!
    #13
  14. wrk2surf

    wrk2surf on the gas or brakes

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    The SXC here was designed for desert racing market here and not street use, Ktm shaved off as much weight as possible.
    #14
  15. gnuttis

    gnuttis Been here awhile

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    seems that both weights 132kg?
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  16. Ned1

    Ned1 Lend Me Yu Choppa

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    That's the "factory optimistic weight" with stock tank and non-cush rear wheel. I had a DRZ 400S last year and it felt about the same in terms of weight and FAR different when you grab a handful of throttle. :rofl

    Get the forks re-sprung, the OEM springs (if you have them) are too mushy, especially if you hammer the bike like wrk2surf does.

    Oh, if you find a sale on rear tires you like buy a half dozen of them... needless to say, you'll be going through them quickly :evil

    There's a few guys around here who rode this bike...they'll find this thread and help you get it sorted to your liking.
    #16
  17. clintnz

    clintnz Trans-Global Chook Chaser

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    If you don't have a cush hub you'll want to be quite anal about properly torquing, loctiting & checking your sprocket bolts. I've seen a few non cush hubs trashed on higher power dirtbikes used on the street when things loosen up. Have fun, an SXC with the big tank & the comfy seat is an extremely versatile & fun machine.

    Cheers
    Clint
    #17
  18. Grreatdog

    Grreatdog Long timer

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    I learned the torque and Loctite drill at the S500 when I Limped back to camp on three bolts. As for tires, I have yet to have a rear go 1000 miles.
    #18
  19. micah360

    micah360 Been here awhile

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    Yeah... it will be used on the street a lot... so I will start looking for a different rear wheel with the cush. I called Woody's today and they don't have squat in stock for a used unit.

    I had a feeling it would eat through the rear tires. The TKC80 that is on there now is getting low.

    I will be doing an oil change on it this week. I read up on that process today. 1.5 liters, 2 filters and bleed the line... check.

    Also... there is a guy on craigslist who might have a set of 17" wheels/tires from a 2005 625 SMC for sale (he converted to enduro). Would those bolt up ok? I would like to have a supermoto set to rip through the mountains on.
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  20. Ned1

    Ned1 Lend Me Yu Choppa

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    when you do the line bleed make sure you go easy on the banjo when tightening it so you don't rip the threads out of the engine case. smart to buy a few extra copper crush washers for that oil banjo. also, careful with the oil drain bolt; after 30-something changes I stripped the case threads and entered into the oversize drain plug conundrum which is not insurmountable but is a PITA.

    SMC's run WP48 forks which is a 26mm axle. your WP43 forks are for a 20mm axle. you can get an adapter for 20 to 26mm but not the other way around. I had a set of sumo hoops for my SXC (too much fun) but they were factory 640SM wheels for a 2002 that had the WP43's on it from the factory.

    if your bike doesn't have one already, get yourself a glass headlight (Baja Designs works just fine) and a brighter bulb too.
    #20