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About Koog

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  1. Koog

    Best oversize rotor kit?

    Put a Tusk floating 270 on mine. I've been happy with it. No experience with Galfer or braking.
  2. Koog

    2012 kx450f Will Not Start!

    Air intake sensor? My 12 also doesn't like the white map block for some reason. Just keeps cutting out mid lap. Other 2 work fine.
  3. Koog

    What rear spring?

    I put a procircuit link arm on my bike. 136mm too. I put a factory connection spring on mine. $120 from Motorsport. No 5.4 kg/mm, but they do a 5.3.
  4. Koog

    What rear spring?

    Did you buy the bike new? Definitely the stock spring, right? If any of the bearings are binding, that'll throw off your sag too. You may wanna clean/grease all your linkage/swing arm bearings before you throw money at a new spring. If those measurements are right, it looks like you need a softer spring, like you said.
  5. Koog

    What rear spring?

    By the way, I put an xtrig on mine a couple months ago. Not cheap, but I love that thing. :-)
  6. Koog

    What rear spring?

    I have a 2012 KX450f. I weight 210lbs and run a 5.9 rear spring. Bike on the stand, distance is 610mm from top rear of swing arm to side panel/seat/rear fender bolt. Bike on ground (no rider), distance is 582, so free sag is 28. Bike on ground (with fat rider on it (me)), distance is 504mm, so race sag is 106.
  7. Koog

    What rear spring?

    You're measuring your race sag as the difference between bike on the stand and bike on the ground with you on it right?
  8. Koog

    What rear spring?

    I assume you first meant that you only have 52mm of sag with you sat on it right?
  9. Koog

    What rear spring?

    50mm free sag and 52mm race sag? That can't be right.
  10. Koog

    What rear spring?

    What's the free sag?
  11. Koog

    Chain and Sprockets

    I run renthals, chain and sprockets, and I've never had a problem with them. Last rear sprocket was on over 20 hours and wasn't that bad. Perhaps that just shows how slow I am. :-(
  12. Koog

    Chain and Sprockets

    Looks very dry. What kinda chain lube you using?
  13. Koog

    2013 kx 450

    Manual says DFI system or ignition system parts faulty. Should point out that's a 2012 manual.
  14. Koog

    2013 sprocket gearing thoughts

    13/51 for me on my 12. Just ride mx.
  15. Koog

    Engine oil, one or the other?

    I run Motul 7100. No particular reason.