Flow Torque Long Riser Kit for Big Block Chevy, Polished

DMP Flow Torque exhaust systems are high quality cast aluminum direct replacement exhaust systems for your stock or mild performance marine engine. DMP offers several different riser styles to fit their manifolds you’ll be assured to find a system to fit your boat. Modeled after the historic Nicson exhaust manifold system, Dana Marine Products systems use scavenging technology for optimum performance. All systems come polished but are also available powdercoated for an additional charge. Optional hard anodizing available for salt water applications is available.

This system fits most silent choice and many "S" pipe applications. Two chamber aluminum risers have a 3.5" ID and accept 4" hose. Kit includes all necessary gaskets, fittings, and mounting bolts.

• 34 3/4" overall width on stock cyl heads
• 14 3/4" tall from the top row of exhaust bolts to the top of the riser
• 6" wide from cyl head to outside of manifold.
• 28 1/2" exhaust port centers

Flow Torque Short Riser Kit for Big Block Chevy, Polished

DMP Flow Torque exhaust systems are high quality cast aluminum direct replacement exhaust systems for your stock or mild performance marine engine. DMP offers several different riser styles to fit their manifolds you’ll be assured to find a system to fit your boat. Modeled after the historic Nicson exhaust manifold system, Dana Marine Products systems use scavenging technology for optimum performance. All systems come polished but are also available powdercoated for an additional charge. Optional hard anodizing available for salt water applications is available.

This system fits most silent choice and many "S" pipe applications. Two chamber aluminum risers have a 3.5" ID and accept 4" hose. Kit includes all necessary gaskets, fittings, and mounting bolts.

• 34 3/4" overall width on stock cyl heads
• 14 3/4" tall from the top row of exhaust bolts to the top of the riser
• 6" wide from cyl head to outside of manifold.
• 28 1/2" exhaust port centers

Flow Torque Stainless Steel Riser Kit for Big Block Chevy, Polished

DMP Flow Torque exhaust systems are high quality cast aluminum direct replacement exhaust systems for your stock or mild performance marine engine. DMP offers several different riser styles to fit their manifolds you’ll be assured to find a system to fit your boat. Modeled after the historic Nicson exhaust manifold system, Dana Marine Products systems use scavenging technology for optimum performance. All systems come polished but are also available powdercoated for an additional charge. Optional hard anodizing available for salt water applications is available.

This kit features DMP’s full length runner manifolds and DMP’s stainless steel risers which will fit most jet and I/O installations. Econo style risers are open chambered, 3.5" ID - 4" OD. Kit includes all necessary gaskets, fittings, and mounting bolts.

• 34 3/4" overall width on stock cyl heads
• 14 3/4" tall from the top row of exhaust bolts to the top of the riser
• 6" wide from cyl head to outside of manifold.
• 28 1/2" exhaust port centers