TR stainless steel exhaust manifolds are built with smooth flowing joint faces and remove any kind of gas flow restriction. The benefit of this is a smoother delivery of power, increased torque and excellent spool up.
Even though you sacrifice a little of the Subaru "Rumble" sound, the high output gain at top rpm will more than make up for a little audio loss! The 3 bolt flange design achieves maximum seal to avoid air leakage while the slip joint bracket provides a stable and effective connection.
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