EMI Thunder exhaust systems by Eddie Marine are a truly high performance upgrade for your power boat. Available for small block, big block, and LS Chevrolet engines, EMI Thunder exhaust systems have features, benefits, and performance that exceed that of other marine exhaust systems and for hundreds of dollars less.
Eddie Marine engine exhaust systems and the home of the EMI Thunder Exhaust, Cast aluminum manifolds and risers for your Big Block Chevy. Every EMI Thunder Exhaust System is made and assembled in Southern California, USA
Eddie Marine engine exhaust systems and the home of the EMI Thunder Exhaust, Cast aluminum manifolds and risers for your Small Block Chevy. Every EMI Thunder Exhaust System are made and assembled in our Southern California facility, USA.
Eddie Marine EMI Thunder exhaust parts & accessories are where you will find all of our individual Thunder Exhaust Cast aluminum manifolds and risers for your Small Block or Big Block Chevy as well as brackets and gaskets.
Large individual runners for ultra-efficient exhaust flow and velocity. • Minimum 10% increase in torque and horsepower • Available for small block, big block, and LS Chevrolet engines • Risers feature a full 3 1/2” inside diameter • 316 stainless steel investment cast, one-piece riser flange/inner pipe • Standard 4” exhaust hose connections • Integral water-cooled exhaust divider • Reliable “Dry Joint” riser flange configuration • Six different riser configurations • Custom built risers available • 70lbs lighter than stock cast iron exhaust systems • Five year limited warrant