Can I used a 150cc head with a 155cc cylinder?

[santacruz]

Originally Posted by DisillusionedPrepper

Hi,
Tire pressure makes a bigger difference in performance than the A9 cams do. Don't get me wrong but the difference is nominal at best but there is a small increase in top end breathing so you may get another mile or two in top MPH.

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Would you recommend staying with the stock cam? And would 9g sliding rollers be a good place to start lightening my rollers