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About knuckleduster271

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  1. I put a vertex hi comp in my 07 wr- Figured if there good enough for ktm to use them as their oem supplier they must be of decent quality- Had a wiseco in an old bike i owned with no problems- that was back when wiseco made pistons in the good ol usa, ive heard their quality has went way down since they moved operations overseas.
  2. Thinking about selling the motard wheels, they work great- wife has had no interest in riding the bike (been on it twice since built). I own a 450 motard so this one seldom gets ridden. I put a set of oem wheels with knobbies on it and am currently using it as a dirtbike.
  3. I took the throttle tube off of mine and wire wheeled the grip off.. but you have to be careful doing it this way for obvious reasons. I swear i think they put them on with JB Weld or something
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    I have a set of factory connection springs in my bike- I resprung them to a heavier spring (my forks- were originally from a yz125) of .50 Stock they range at .46 - .48 on the 450 Yamahas and I'd like to swap someone who is wanting a little heavier spring in their otherwise stock 2012+ wr450f or 2006+ yz450f. If interested you can call or text me at 4195712961


  6. Mixxer did a head for me, it gave a noticable power increase across the board- the power curve came on earlier and held alot longer on the dyno than my first dyno run when the bike was mostly stock. One thing i didnt care for on the mixxer port job was that he flush cut the valve guides- i would have rather left them the factory length personally even if it would have cost me a little on the dyno. I spoke with ron hamp about flush cutting guides- he said it wasnt anything to be too worried about- that it does take away some reliability bit doubtful id have any problems with it- said he doesn't cut them as it doesn't change the flow numbers at all. So, my suggestion- if you use mixxer specify that you want your guides left stock...
  7. Ive seen teeth on the kicker gears do this if the jetting isn't correct. Does it ever backfire when kicking it over?
  8. South Dakota title that sumbitch if PA gives you any greif
  9. Have you attempted to adjust the valves?
  10. I bought this key off ebay, i think it was a generic version of the ttr key- cost about $10 iirc. It has the same pins as the oem on/off button, i just removed the plastic harness from it and installed the switch wires into the OEM harness. For the mount i did some creative bending of the oem on/off bracket then cut a cover out of black plastic.
  11. Id like to know about these as well
  12. I managed to get 57 hpfrom my 07 wr450- wasnt cheap. I got 49 hp with just free mods, slip on and yz cam swap.
  13. I have over 10k miles on my original shaft. Ive replaced the two seals once and cleaned the shapt up real good with a scotch brite pad. That was 8,000 miles ago
  14. Ive never worked on a 426- my 450 didn't take anything special other than a flywheel puller and a torque wrench. I split the cases fairl easy usuing a large screwdriver (theres castings on the outside of the cases. Once you get them somewhat apart use a soft faced hammer and tap the flywheel end of the crank with the engine laying on its side having an extra set of hands holding it a few inches above the work space.
  15. I had mixxer port my head. He's pretty will known on the atv forums, I'm pretty sure hes a member here also. I picked up a few ponies but the biggest reward was in the power curve. It came alive alot faster and pulls clear to the rev limiter. Only thing i didn't care for was he cut the valve guides flush with the head. Ive seen a few builder's do this- Im sure it flows a little better that way but id prefer them to be left uncut.