EMI 513 Thunder Exhaust System-BB Chevy With SS Hi Performance Dry Pipe

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  • Regular price $3,200.00

Equipped with our performance dry Stainless Steel High Flow Risers, these are our best performing systems. They are a direct replacement for many stock Mercruiser manifolds in Bravo and Alpha applications with exhaust outlets in the stock location (if you have existing exhaust outlets, you should check our dimensions to determine fit before ordering). The long dry risers on these systems is a must with High Performance camshafts to prevent reversion (water ingestion). Standard length on these risers is 32" but they are made to order. Just provide us a length from your front cylinder head bolt to the end of the tailpipe. In extremely long applications, there may be an extra charge. With dry risers, the engine discharge water and exhaust do not mix until the very end of the tailpipe, outside of the boat, reducing the chance of reversion. They will be quite a bit louder than a standard set of risers.These longer risers WILL NOT work with Selector systems or stock "S" pipe connections. Brackets to keep all of the stock componenets in their existing locations (shift quadrant, ignition module and oil filter bracket) are available and sold separately.EMI Thunder Exhaust Manifolds are constructed from the highest strength 356 aluminum that is heat treated to a T-6 condition after it is cast. They are then hard-coat anodized to a military specification throughout to prevent corrosion of all surfaces including the internal water passages. Lastly, EMI Thunder Exhaust come standard with a durable gloss black Fusioncoated finish. They are also available in your choice of custom Fusioncoated colors or highly polished (polished systems are not hard-coat anodized).The EMI-513 System includes 1pr. EMI Exhaust Manifolds, 1pr. High Performance Stainless Dry Risers, stainless steel through hull flanges and gaskets, manifold bolts, gaskets, and fittings.