How much should I go up on main

[arena314]

hey all, I have a banshee the engine is stock is has t5's uni filter with lid (I ride in dirty locations) +4 timing and im running it on pump 93. I will be adding reeds and a coolhead with 21cc domes to get a little more. I know I could cut the stock head but I plan on doing something different with it later on after its ready for a rebuild. Im running a 27.5 pilot and a 270 main and it runs good doesnt foul plugs ever or anything. Im between 50-500 ft of elevation i suppose depending on where I ride. I was thinking of putting a 300 main in it and go from there after adding these upgrades? What do you guys think

 

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[locogato11283]

You won't need a 300. 280 will likely be plenty. And leave the pilot alone.