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nickvalve Added a reply to 2008 yz450f jetting with dr.d full exhaust?

7/18/2012 9:22am
50 pilot is fine / do not know what a ncyq needle spec is for comparison purposes against the stnd. nflr / do not think that banshee jet will work properly as opposed to the stnd. 55 leak jet / the 168 main may or may not be too rich with that needle , If it were me , I...

nickvalve Added a reply to ASV or Sunline lever setups?

7/17/2012 8:48am
Nothing compares to the high end ARC's , especially on the clutch side / virtually impossible to break the new composition levers , I tried . Every other assembly will wear out long before the ARC's , you pay once and thats it.

nickvalve Added a reply to 2008 yz450f jetting with dr.d full exhaust?

7/17/2012 8:44am
The 5 valve head almost eliminates any rejetting up to 9,000 ft. We have found many that require a much richer pilot jet [ in the 45 to 50 size] even at sea level. Typically Dr.D exhausts do not require any major re-jetting.