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CMI INDUSTRIAL

CMI Industrial is proud of its heritage as a designer and manufacturer of top-quality sound and noise attenuation systems that have set the benchmark for quality and innovation. CMI has enjoyed a decades-long leadership position by offering unparalleled products and services, and maintaining industry-leading customer satisfaction.

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CMI Elbow Top™ (E-Top) Systems

CMI Elbow Top Systems
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CMI Elbow Top headers are designed for direct replacement of most stock cast manifolds. Top engine builders and stern drive manufacturers who want to optimize performance of small- or big-block marinized engines prefer CMI Elbow Top headers for their engines. CMI E-Top systems offer separated exhaust passages with long individual exhaust tube runners to minimize cylinder to cylinder influence and improve exhaust gas scavenging, which allows the engine to breathe freely and deliver peak performance power. Each header features a permanently attached, non-adjustable exhaust tailpipe configured to meet precise specifications for stan¬dard transom layouts and placement of thru-hull exhaust tips. All CMI Elbow Top Systems include rubber water distribution tubes, cooling water bypass couplings installed on the collector elbow, by-pass hose fittings, attaching cap screws, exhaust port gaskets, hose clamps and cooling water inlet fittings needed for most installations. Any Elbow Top System may be purchased with a stainless steel distribution tube upgrade.

CMI Standard Elbow Top Systems

CMI Standard Elbow Top Systems
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CMI Standard Elbow Top Systems are can be ordered with a range of exhaust tailpipes or CMI’s Sound Choice™ selectable silencing system, which are sold separately.

 

 

Best pricing and availability through one of our
CMI Distributors or CMI Authorized Dealers...click here for details.

Part Part Number

Big Block Chevrolet

Polished Finish 13005
Platinum Finish 13055

Small Block Chevrolet and Ford Engines

Satin Finish 13156
Polished Finish 13157
CMI Small Block Headers

Split Top Components

Header Upgrade Garage

  • Brackets
  • Sensor Couplings
  • Header Bolts

CMI Custom Elbow Top Systems

CMI Custom Elbow Top Systems
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For performance engine applications requiring a true custom fit, the CMI Custom Elbow Top System can be configured to meet the requirements of most engine installations.

 

 

Best pricing and availability through one of our
CMI Distributors or CMI Authorized Dealers...click here for details.

Part Part Number
Custom Configured Elbow Riser With Standard Elbow Top Lower 13215

Split Top Components

Header Upgrade Garage

  • Brackets
  • Sensor Couplings
  • Header Bolts

CMI Elbow Top Systems – Fusion™ NEW!

CMI Unit Elbow Top Systems -- Unitop
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CMI Fusion™ features polished elbow collector and attached tailpipes with satin finished primary tubes. Tailpipes are not required for Fusion™.

 

 

 

  • Designed for engines generating up to 750 HP
  • Standard versions designed to fit stock Mercury bravo exhaust exit locations
    *** custom fit applications also available ***
  • Performance gains in Horsepower and Torque
  • Integrated Tail eliminates tailpipe clamps and gaskets
  • Features satin primary tubes and a polished elbow collector fused with a polished tailpipe
  • 316L stainless steel offers supreme durability

Best pricing and availability through one of our
CMI Distributors or CMI Authorized Dealers...click here for details.

Part Part Number
Fusion™ Exhaust Manifold with Polished Elbow and Satin Lower 13910

Split Top Components

Header Upgrade Garage

  • Brackets
  • Sensor Couplings
  • Header Bolts