03-01-2012, 09:03 PM #1
BlackJack 48mm Serie I S.F.I. mod or Super BN H.S.S.???
Does the BlackJack 48mm S.F.I. mod on Mikuni I Series have the same gains of the Super BN H.S.S.???
03-02-2012, 09:04 PM #2
The I body BlackJacks have no midrange they will jump from 4000 to over 6000 rpm with nothing in between. They hit hard and work great at WOT but the lack of a mid-range made cruising difficult. The SBN series is the only way to go on these IMO.
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