IMCO Marine

Small Block std. Stainless steel "SA" riser pipes are designed for Mercruiser Silent Choice, Corsa Quick and Quiet (with modifications), and IMCO's Sound Advantage systems. They can also be used with our Aluminum "S" pipes part number 02-1225 for under swim step applications.

When using these risers it's best to order 2 each 02-2242 oval hoses for the wishbone connection. 3/4"npt fitting is used on front of pipe for thermostat housings that have (4) 1" hoses water to go to exhaust manifolds, if needed click on (ADD BUNG). Shift bracket, ECM, or EFI brackets available as bolt on or welded to the risers.To order see PowerFlow Accessories or Related Products. (Sold in pairs)

Small Block 3" Stainless steel "SA" riser pipes are designed to replace stock Mercruiser Bravo exhaust with 3" riser block between manifold & Riser. 3/4"npt fitting is used on front of pipe for thermostat housing that have (4) 1" hoses water to go to exhaust manifolds if needed click on (ADD BUNG). Shift bracket, ECM, or EFI brackets available as bolt on or welded to the risers.To order see PowerFlow accessories or Related Products. They can also be used with our Aluminum "S" pipes part number 02-1225 for under swim step applications.

Small Block 6" Stainless steel "SA" riser pipes are designed to replace stock Mercruiser Bravo exhaust with 6" riser block between manifold & Riser. 3/4"npt fitting is used on front of pipe for thermostat housing that have (4) 1" hoses water to go to exhaust manifolds if needed click on (ADD BUNG). Shift bracket, ECM, or EFI brackets available as bolt on or welded to the risers.To order see PowerFlow Accessories or Related Products. They can also be used with our Aluminum "S" pipes part number 02-1225 for under swim step applications.

Snap Ring (Clutch Gear Bearing Retainer)

2 per SC Upper Case Assembly.

Snap Ring (Extra Thick)

2 per Gimbal Ring Assemblly

Sound Advantage Shift Seal and Bushing Kit

(Sold as a kit including: 2 seals and 4 bushings)

(Parts not sold individually)

IMCO has spent hours engineering and developing this outstanding product. In testing this product, we have found that the propeller creates a vacuum through the propeller hub and wishbone, which is adequate for medium speeds, but for top speeds, more power is required, and better exhaust flow. Sound Advantage provides better flow, and more power with a touch of a switch for both big block and small block.

This system is unique because of its simplicity. Unlike other systems created by other manufactures that are either wide open or closed at all times, Sound Advantage can be opened to any position for any amount of exhaust flow and sound at any time. Our unique worm gear drive requires a 12-volt supply and an optional switch sold separately. All Sound Advantage systems for Mercruiser, IMCO Powerflow, and IMCO Stainless Steel Risers for Mercruiser are powder coated black. Exhaust tips sold separately.

IMCO has spent hours engineering and developing this outstanding product. In testing this product, we have found that the propeller creates a vacuum through the propeller hub and wishbone, which is adequate for medium speeds, but for top speeds, more power is required, and better exhaust flow. Sound Advantage provides better flow, and more power with a touch of a switch for both big block and small block.

This system is unique because of its simplicity. Unlike other systems created by other manufactures that are either wide open or closed at all times, Sound Advantage can be opened to any position for any amount of exhaust flow and sound at any time. Our unique worm gear drive requires a 12-volt supply and an optional switch sold separately. All Sound Advantage systems for Mercruiser, IMCO PowerFlow, and IMCO Stainless Steel Risers for Mercruiser are powder coated black. Exhaust tips sold separately.

Standard system for Mercruiser, IMCO PowerFlow, Thumper Power, and IMCO Stainless Steel replacement riser pipes along with 02-8200 system for OMC are designed for large freeboard boats with 36" or taller from bottom of boat as pictured. Switch and exhaust tips sold separately. Please specify big block or small block when ordering.

IMCO has spent hours engineering and developing this outstanding product. In testing this product, we have found that the propeller creates a vacuum through the propeller hub and wishbone, which is adequate for medium speeds, but for top speeds, more power is required, and better exhaust flow. Sound Advantage provides better flow, and more power with a touch of a switch for both big block and small block.

This system is unique because of its simplicity. Unlike other systems created by other manufactures that are either wide open or closed at all times, Sound Advantage can be opened to any position for any amount of exhaust flow and sound at any time. Our unique worm gear drive requires a 12-volt supply and an optional switch sold separately. All Sound Advantage systems for Mercruiser, IMCO Powerflow, and IMCO Stainless Steel Risers for Mercruiser are powder coated black. Exhaust tips sold separately.

Standard system for Mercruiser, IMCO Powerflow, Thumper Power, and IMCO Stainless Steel replacement riser pipes along with 02-8200 system for OMC are designed for large freeboard boats with 36" or taller from bottom of boat as pictured. Switch and exhaust tips sold separately. Please specify big block or small block when ordering.

Spirol Retainer Ring

1 per Upper Clutch Gear, used to retain bearing in gear.

Spring Kit

1 Kit per SC, SCX, SCX4, SCT 09, Upper Case

Stainless Puke Tank Brackets (pair)