650-13012 The all polished, straight back CMI Sweeper style are a superior long tube header designed for both racing and any high-performance application. These leaned, taller headers are commonly used in custom or staggered set up Mercury 525-700 series motors. These headers feature the CMI Flex Flare Tailpipe Connection. For big-block applications, where maximum scavenging and horsepower are required, CMI Sweeper headers deliver peak performance and power from naturally aspirated engines.
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650-13795 The all polished, 11” taller, straight back CMI Sweeper style are a superior long tube header designed for both racing or any high-performance application. These leaned, taller headers are commonly used in custom or staggered setup Mercury 525-700 series motors. These headers feature the CMI Flex Flare Tailpipe Connection. For big-block applications, where maximum scavenging and horsepower are required, CMI Sweeper headers deliver peak performance and power from naturally aspirated engines.
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650-13896 The all polished, 11” taller, straight back CMI Sweeper style are a superior long tube header designed for both racing or any high-performance application. These leaned, taller headers are commonly used in custom or staggered setup Mercury 525-700 series motors. These headers feature the CMI Flex Flare Tailpipe Connection. For big-block applications, where maximum scavenging and horsepower are required, CMI Sweeper headers deliver peak performance and power from naturally aspirated engines. Leaned for staggered engine applications.
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650-13205 A custom straight back taller and/or leaned sport tube header for Mercury HP 525 EFI – 700SCi series motor packages. Used mostly in stagger builds for front motors and occasional rear motors. Exact replacement of existing headers in original builds. Built using the high quality 316L stainless steel that is used in our race systems. Patented “Cool Collar” design provides a short hot section at the flange, which helps minimize the possibility of water ingestion in to the engine. Uses “Flex Flare” technology for tailpipe connection allowing flexibility in the joint. Bolt pattern for the custom Mercury platform.
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650-13306 A custom straight back taller and/or leaned sport tube header for Mercury HP 525 EFI – 700SCi series motor packages. Used mostly in stagger builds for front motors and occasional rear motors. Exact replacement of existing headers in original builds. Built using the high quality 316L stainless steel that is used in our race systems. Patented “Cool Collar” design provides a short hot section at the flange, which helps minimize the possibility of water ingestion in to the engine. Uses “Flex Flare” technology for tailpipe connection allowing flexibility in the joint. Bolt pattern for the custom Mercury platform. Leaned version for use on staggered engine setups.
ALL CMI HEADERS ARE MADE TO ORDER AND SHIP FROM THE FACTORY IN 3-4 WEEKS
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650-13475 The all polished, 6” taller, straight back CMI Sweeper style are a superior long tube header designed for both racing or any high-performance application. These leaned, taller headers are commonly used in custom or staggered setup Mercury 525-700 series motors. These headers feature the CMI Flex Flare Tailpipe Connection. For big-block applications, where maximum scavenging and horsepower are required, CMI Sweeper headers deliver peak performance and power from naturally aspirated engines.
ALL CMI HEADERS ARE MADE TO ORDER AND SHIP FROM THE FACTORY IN 3-4 WEEKS
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650-13576 The all polished, 6” taller, straight back CMI Sweeper style are a superior long tube header designed for both racing or any high-performance application. These leaned, taller headers are commonly used in custom or staggered setup Mercury 525-700 series motors. These headers feature the CMI Flex Flare Tailpipe Connection. For big-block applications, where maximum scavenging and horsepower are required, CMI Sweeper headers deliver peak performance and power from naturally aspirated engines. Leaned for Staggered Engine Applications.
ALL CMI HEADERS ARE MADE TO ORDER AND SHIP FROM THE FACTORY IN 3-4 WEEKS
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650-13785 The all polished, 9” taller, straight back CMI Sweeper style are a superior long tube header designed for both racing or any high-performance application. These leaned, taller headers are commonly used in custom or staggered setup Mercury 525-700 series motors. These headers feature the CMI Flex Flare Tailpipe Connection. For big-block applications, where maximum scavenging and horsepower are required, CMI Sweeper headers deliver peak performance and power from naturally aspirated engines.
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650-13886 The all polished, 9” taller, straight back CMI Sweeper style are a superior long tube header designed for both racing or any high-performance application. These leaned, taller headers are commonly used in custom or staggered setup Mercury 525-700 series motors. These headers feature the CMI Flex Flare Tailpipe Connection. For big-block applications, where maximum scavenging and horsepower are required, CMI Sweeper headers deliver peak performance and power from naturally aspirated engines. Leaned for Staggered Engine Applications.
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650-13119 The all polished, straight back CMI Sweeper style are a superior long tube header designed for both racing and any high-performance application. These leaned, taller headers are commonly used in custom or staggered set up Mercury 525-700 series motors. These headers feature the CMI Flex Flare Tailpipe Connection. For big-block applications, where maximum scavenging and horsepower are required, CMI Sweeper headers deliver peak performance and power from naturally aspirated engines. This version is leaned for use on staggered engine applications.
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650-29000 CMI Tailpipe Flange
- Height: 5"
- Inner Dia: 4"
- Outer Dia: 4-15/16"
Basis for constructing custom CMI tailpipes. Same as #29180J
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650-34190 Exhaust Header To Riser Gaskets - CMI Elbow Top Tailpipe Gasket (each)
5" O.D. and 4" I.D.
Here is just a sampling of the popular exhaust manifold gaskets that we offer. Each gasket is designed to withstand the high temperatures of marine exhaust applications. Gaskets are sold individually. Replaces Mercury OEM# 27-848254
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650-62108 These are used with flat flange 525, 600 & 700 headers to make 4-1/2 OD tailpipes. SOLD EACH!
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650-44204J Ring to convert flat turbo flange on Mercury QC4 (1100-1550) HP motors to a Flex Flare tailpipe connection. Works with standard Big Tube clamps. Picture shows front and rear. SOLD EACH!
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650-39358 Stock Replacement wet tailpipes for use with Mercruiser 525 Headers, CMI Gen-X or Hardin Hurricane Lite Headers. Replaces OEM Mercury Part Number 8M0025008.
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650-34015 LS Exhaust Gasket
Sold Each
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650-34350 Sport Tube/Sweeper Flex Flare Gasket fits Merc 525/600/700 Gen-X, Hurricane Lite.
Sold Each, replaces OEM Mercury #27-842454
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650-41018P Mercury Header Flange To CMI Tail Pipe
This CMI Flange adapter is designed to allow a Mercury Header flange to mount to CMI flare tail pipes. This part is used to convert a Mercury 500EFI E-top header to a flex flare 4" tailpipe connection instead of the Mercury flat flange.
Sold In Pairs
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650-36190 Clamp Kit for Mercury Tailpipes
This kit includes:
- (1) Jumper Hose 1.125" ID, 180 Degree. Mercury
- (2) Stainless Steel Hose Clamp #16
- (1) Mercury Tailpipe V-Band Clamp
- (1) Gasket kit for Mercury Tailpipes
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650-30180 Molded Rubber Distribution Tube
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