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Do i need a aftermarket cam if i buy the 150cc big bore kit? Or is there so little power gain so it´s not worth the money?

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you dont need 1....look at bbr.com they sell a 150 kit with and without it. the bike will get a much bigger gain by going with an aftermarket cam then without it.

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I would not get the BBR cam. Get the big bore kit, then wait and get a Powroll or Hotcam later.

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On my big bore, on the dyno, it gets 1.5HP LESS than the Powroll cam. It also doesn't "run out" as far with the BBR cam. Powroll cam was better everywhere on the graph. I'll sell you my BBR cam if you want?

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I just tried, but my scanner won't pick up the fine lines from the old printer that's hooked up to the dyno, but as I'm looking at it right now, with no changes except the cam swap, it makes 1.6HP more with the Powroll Cam!

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