N11 Intake .441″ lift, 229° duration @.050″ lift, N10 Exhaust .434″ lift, 226.4° duration @.050″ lift. More exhaust lift and duration than N11/N9. S, S2, 968 cores. Recommend S valve springs. Peak power 7000+ rpm. Best result with larger intake valve than S and S2 (Like 968). Dry sump highly recommended. $880
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