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09+ CRF450 Big Bore Thumpers Ported Head Dyno?

3K views 1 reply 2 participants last post by  kba-pro 
#1 ·
Does anyone have a dyno graph showing before/after (vs a stock head) results of installing a bbt ported head on their EFI CRF450?

I'd also be interested in before/after ported head graphs from other well known companies.

Thanks in advance.
 
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