Custom Marine Inc. - Accessories

CMI Tailpipe Flange

• Height: 5"
• Inner Dia: 4"
• Outer Dia: 4-15/16"

Basis for constructing custom CMI tailpipes. Same as #29180J

These are used with flat flange 525, 600 & 700 headers to make 4-1/2 OD tailpipes. SOLD EACH!

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!

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

Molded Rubber Distribution Tube

Polished 4" 316L Stainless Steel Tubing

This premium grade 4" seamless tubing is available in a highly polished mirror finish or in its raw form. Perfect to replace long lengths of rubber exhaust hose.

Sold by the foot.

Polished 4.5" 316L Stainless Steel Tubing

This premium grade 4.5" seamless tubing is available in a highly polished mirror finish or in its raw form. Perfect to replace long lengths of rubber exhaust hose.

Sold by the foot.

Raw 4" 316L Stainless Steel Tubing

This premium grade 4" seamless tubing is available in its raw form. Perfect to replace long lengths of rubber exhaust hose.

Sold by the foot.

Raw 4.5" 316L Stainless Steel Tubing

This premium grade 4.5" seamless tubing is available in  its raw form. Perfect to replace long lengths of rubber exhaust hose.

Sold by the foot.

Replacement O-Ring for Flex Flare Tailpipe Flange 650-44204J

Shift Bracket for CMI Gen-X and Hardin Hurricane, Seaward 525 / 700 Exhaust

This is a bracket only for installing yourself on compatible headers.

Stainless Steel Distributon Tube Kit for Big Tubes

Stainless Steel Distribution Tube Kit for E-Tops & Sport Tubes (Sold in Pairs)