Boost-activated valved muffler upgrade for the Boost Logic Magnum 4.5" Titanium Exhaust — muffler section only, reuses your existing tips. Valves stay closed under 7 psi for a subdued cruising tone (about 10 dB quieter than the non-valved version), then open above boost for maximum flow and an aggressive sound. Zero back pressure or power loss when closed; matches full race exhaust flow when open.
Fitment: Boost Logic Magnum 4.5" exhaust systems only.