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EMI Thunder Exhaust System-BB Chevy With High Perf SS Risers - Polished Finish

System Includes:

1pr. EMI Exhaust Manifolds

1pr. Aluminum Risers

Bolts, exhaust and riser gaskets, and fittings.
* Accessory brackets are sold separately.

*Not for use with engines equipped with high performance camshafts!

NOTE: EMI Thunder systems with a polished finish have NO internal or external coating and are NOT protected from corrosion. These systems are only warrantied for 90 days against manufacturing defects ONLY.

Price: $3,192.00

WARNING- Cancer and Reproductive Harm: Proposition 65

Product Code: EMI-511P

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Description

Technical Specs

Warranty Information

Equipped with our performance Stainless Steel High Flow Risers, these are our best performing systems. EMI Thunder exhaust systems 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, please check our dimensions to determine the correct fit before ordering! We are not responsible for exhaust systems that do not match up to existing holes in your boat's transom). The 16" long riser on these systems is a must with High Performance camshafts to prevent reversion (water ingestion). NOTE: Engines using larger than stock, aftermarket camshafts may require a dry tailpipe system to prevent reversion. Provide us with your camshaft's lope separation angle and duration at .050" before choosing an exhaust system! These longer risers WILL NOT work with Selector systems or stock "S" pipe connections. Brackets to keep all of the stock components in their existing locations (shift quadrant, ignition module and oil filter bracket) are available and sold separately.

NOTE: protected from corrosion. These manifolds are only warrantied for 90 days against manufacturing defects ONLY.

Features
Features:

Large individual runners for ultra-efficient exhaust flow and velocity
Direct replacement for many stock Mercruiser manifolds in Bravo & Alpha apps
*See our systems dimensions in the Technical Specs below to confirm fitment.
Minimum 10% increase in torque and horsepower
316 stainless steel investment cast, one-piece riser flange/inner pipe
Standard 4” exhaust hose connections
Integral water-cooled exhaust divider
70lbs lighter than stock cast iron exhaust systems
90 day warranty against manufacturing defects ONLY
Constructed from the highest strength 356 aluminum

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