Konrad Marine

Booth #2132
1421 Hanley Rd
Hudson , WI 54016
United States

Konrad Marine designs and manufactures stern drives for commerical, military, recreational and high performance applications. Since 1991, Konrad stern drives have been hard at work, worldwide, with proven reliability, strength, and performance.

Konrad stern drives are the hardest working, longest lasting, toughest stern drives ever made.

Visit us in BOOTH 2036 at the Workboat Show to see our NEW SERIES 600 STERN DRIVES. Three models are available, the 620, 660, and 680 – built for durability, speed, performance, efficiency, and strength.

Come talk to some of the most knowledgeable professionals in the propulsion industry and find out what the right drive is for your vessel and application.

If you’re looking for a stern drive that will give you BOTH the performance and quality you demand… you’ve found it with Konrad Marine’s propulsion.

We look forward to working with you and providing you with the best propulsion system for your application!

Products & Services

Categories

Konrad Marine Stern Drive / Outdrive Model 620

Konrad Marine's Stern Drive / Outdrive Model 620 ratings are: Recreational Performance at 300 hours per year:                                                    Torque = 1100 Nm or 812 lb ft  /  gw/hp = 29 kw/kg or 40 lbs/hp Military / Government Performance at 800 hours per year:                                    Torque = 830 Nm or 612 lb ft / gw/hp = 29 kw/kg or 40 lbs/hp Medium Duty Commercial Performance at 2000 hours per year:                          Torque = 745 Nm or 550 lb ft / gw/hp 29 kw/kg or 40 lbs/hp           Propellers:  single 20 inch (51 cm) Gears:  Six inch, high strength, heat treated alloy steel utilizing high performance marine technology Gear Ratios for the Model 620 Outdrive:  1.23:1, 1.45:1, 1.55:1, 178:1

Konrad Marine Stern Drive / Outdrive Model 660

Konrad Marine's Stern Drive / Outdrive Model 660 ratings are: Recreational Performance at 300 hours per year:                                                    Torque = 1100 Nm or 812 lb ft  /  gw/hp = 29 kw/kg or 40 lbs/hp Military / Government Performance at 500 hours per year:                                    Torque = 830 Nm or 612 lb ft / gw/hp = 22 kw/kg or 30 lbs/hp Medium Duty Commercial Performance at 1000 hours per year:                          Torque = 745 Nm or 550 lb ft / gw/hp 22 kw/kg or 30 lbs/hp           Propellers:  dual, counter rotating, 16 inch (41 cm) Gears:  Six inch, high strength, heat treated alloy steel utilizing high performance marine technology Gear Ratios for the Model 660 Outdrive:  1.07:1, 1.23:1, 1.31:1, 143:1, 1.50:1, 1.74:1                          

Konrad Marine Stern Drive / Outdrive Model 680

Konrad Marine's Stern Drive / Outdrive Model 680 ratings are: Recreational Performance at 300 hours per year:                                                    Torque = 1200 Nm or 885 lb ft  /  gw/hp = 37 kw/kg or 50 lbs/hp Military / Government Performance at 1000 hours per year:                                    Torque = 904 Nm or 667 lb ft / gw/hp = 37 kw/kg or 50 lbs/hp Medium Duty Commercial Performance at 2000 hours per year:                          Torque = 813 Nm or 600 lb ft / gw/hp 37 kw/kg or 50 lbs/hp           Propellers:  dual, counter rotating, 20 inch (51 cm) Gears:  Six inch, high strength, heat treated alloy steel utilizing high performance marine technology Gear Ratios for the Model 680 Outdrive:  1.24:1, 1.43:1, 1.52:1, 1:74:1

Konrad Stern Drive Model 520

Konrad Stern Drive Model 520The Konrad 520 stern drive is engineered for people that work hard. Designed for commercial applications, the Konrad 520 is recognized for long-term durability. Now Konrad offers a heavy duty version with larger diameter shafts and bearings to handle higher horsepower diesel engines.

Konrad Stern Drive Model 540

Konrad Stern Drive Model 540The Konrad 540 Stern Drive provides excellent propulsion in hard working, high speed applications. Several assembly upgrades are available including the high performance lowers and heavy duty options. The HD has an upgraded input shaft that provides extra durability for extreme boating conditions.

Konrad Stern Drive Model 560

Konrad Stern Drive Model 560The Konrad 560 Twin Prop System was engineered to reduce stress on its gears using dual propeller technology, offering a durable drive you can depend on for years to come. The 560 Twin Prop drive features two, one piece stainless steel propeller shafts, fitted with line protection seals.

Boat Building / Repair

  • Boat Building and Repairs

Propulsion / Power

  • Stern Drives
  • Propulsion
  • Gears
  • Engines

Training / Education / Certification

  • Training & Education