s1x is smaller, has slightly more mid-range than an xp, and has proven itself as a 1/4 mile cam versus the xp which is slightly bigger and will make more power on a dyno.
you choose.
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03-23-2011
s1x is smaller, has slightly more mid-range than an xp, and has proven itself as a 1/4 mile cam versus the xp which is slightly bigger and will make more power on a dyno.
you choose.
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