Pitster Pro LXR 250f

Discussion in 'Thumpers' started by Navin, Oct 23, 2017.

  1. stumpmj

    stumpmj Been here awhile

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    I follow all the gpx threads! Thinking of adding a 2 stroke to the stable next year. I'll keep an eye on the far thread but add me to the list. That plus the big bore kit will make a nice bike!
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  2. stumpmj

    stumpmj Been here awhile

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    Not sure who all still reads this thread but curious if anyone has a link to a big bore install guide. The one I had bookmarked is gone now.

    Side note, my planned 3 day ride through northern Neveda over the weekend was curtailed due to weather. Camping is no fun when it's under 30 degrees. At least with the gear I have.
    IMG_20200523_061333.jpg
    Notice the snow! My Camelback was halfway frozen in the morning.
    Did a 100 mile loop instead of the planned 500 mile ride. Still a good time and lots of great sights.
    IMG_20200523_103557.jpg
    Distant cousin to the city of rocks?
    IMG_20200523_104653.jpg
    No one had been on some of the roads for a long time
    IMG_20200523_114613.jpg
    Beautiful views!
    IMG_20200523_114648.jpg
    Still plenty of ice/snow around at 2 pm.
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  3. Navin

    Navin Long timer

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    Did @Chadzu do a youtube vid on the BB install? Or @Roostre maybe? Or a Chinariders thread? I saw something somewhere! (So useful am I!)

    And Im still watching! Kick myself for selling my LXR some days!
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  4. GlennR

    GlennR Chasin' my tail

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    Here you go.

    http://www.chinariders.net/showthread.php?t=21779

    If you run into any stupid situations give me a shout, I fumbled over simple stupid stuff a number of times. The main issue I had was pinching the chain between one of the plastic chain guides & couldn't get the cam back into position because the chain was too short. I also stripped the threads on the center bolt hole of the valve train cover, but realized that a 7mm longer bolt would work.

    It's really a pretty simple job, which I was surprised to have fumbled so much on.
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  5. stumpmj

    stumpmj Been here awhile

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    Thanks! It's this week's project. Bike pretty much kept up with my buddy on his dr650 but it could certainly use more oomph climbing hills at altitude!
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  6. Navin

    Navin Long timer

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    That tutorial link is added in post #2 sticky list.
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  7. Dirtleg

    Dirtleg C-16 is tyranny. Supporter

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    I'll say this. I still ride my LXR.

    The more time I spend on it the better I like it.

    Even with the idle screw mod I still have the occasional flameout and it seems often it won't restart until you cycle the ignition switch when it flames out. But it always runs.

    I have a big bore on the shelf but don't feel the need to install it yet. Maybe some day.

    Glad others are out enjoying theirs too.
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  8. stumpmj

    stumpmj Been here awhile

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    IMG_20200526_210648.jpg
    When a tire swap goes too well so you decide to look into some ningling issues in the front end.

    Anyone have a good technique to align the upper and lower fork clamps?
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  9. Franque

    Franque Been here awhile

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    The fork tubes do a good job of that.
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  10. stumpmj

    stumpmj Been here awhile

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    Probably not in this case:
    IMG_20200527_180252.jpg
    Upper is almost 1 mm out of level
    IMG_20200527_180342.jpg
    Lower is more than 1.5 mm out

    Anyway to straighten these things? Pretty sure it's time for new parts.
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  11. Navin

    Navin Long timer

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    Did it suffer a big front end impact? Were the tubes binding when you pulled them out?
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  12. stumpmj

    stumpmj Been here awhile

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    Yup. Hit a really big rock. And a tree. There are impact marks on the lower clamp from the steering stops.

    The tubes didn't slip out. Had to pull/twist to get them out.
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  13. stumpmj

    stumpmj Been here awhile

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    @Navin if you have time, can you measure the tube diameter of your gpx forks where the clamps go? I'm seeing 53 mm upper and 58 mm lower on mine. KTM is supposed to be 54/60 mm. I know you swapped yours onto your old 450.

    Trying to see what options there are for triple clamps for the LXR ( I emailed Gary to see what he has too).
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  14. GlennR

    GlennR Chasin' my tail

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    I think Kayo just began distributing in the USA. The LXR250 is a rebranded Kayo K6, so we'll start seeing more of them around & parts will be easy to find.
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  15. Franque

    Franque Been here awhile

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    I'm not sure that Kayo will take off though, the prices they're asking for down specced stuff (compared to Pitster Pro/GPX) seems way out of line, I think it'll be an uphill battle for them. I think they're using differently specced suspension, so they might not have the triples you need.

    Also, I wouldn't dream of trying to straighten something structural like that, unless it was heated almost to the point of melting. Kinda like with steel, you bend it once, and it's super weak if you bend it back.
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  16. Navin

    Navin Long timer

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    I dont think I swapped the LXR forks onto the Husky, they were off a TSE IIRC and everything crosses over from the later GPX to modern KTM/Husky, fork, wheel, triples, brake caliper, axle etc. I have WP forks/shock on my FSE right now with all Gpx parts attached to them except the lower shock bolt is KTM(different pitch thread).

    I will measure the set of GPX triples I have in my shop in a bit... TBC.
  17. stumpmj

    stumpmj Been here awhile

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    I've seen asking prices between $4500 and $5500. At those asks, the gpx is a no-brainer.
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  18. stumpmj

    stumpmj Been here awhile

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    Thanks. If you want to throw calipers on tubes (above/below the clamps) that would also be fantastic.

    And if anyone with an LXR can do the same, that would be great.
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  19. Navin

    Navin Long timer

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    54/60mm + 00.04-00.1mm. All the same stuff, GPX/KTM.
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  20. stumpmj

    stumpmj Been here awhile

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    Ah crap. Guess the option to buy KTM stuff is out.
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