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The aFe Apollo GT Cat‑Back Exhaust for GM trucks (2009–2018; 4.3L/4.8L/5.3L) is a 3" mandrel‑bent 409 stainless system tuned for power and an aggressive exhaust note. Dyno‑tested gains up to +14 HP and +17 lb‑ft torque are reported. It installs with factory‑style hangers and includes dual 4.5" black clamp‑on 304 stainless tips, and is 100% MIG‑welded for durability and precise fitment.
aFe Apollo GT Cat-Back Exhaust GM Trucks 09-18 V6-4.3L/V8-4.8/5.3L-Dual Rear-Side Exit Black Tips
