The Konrad 680B has been engineered with the largest and strongest gears in the industry. The 680B is capable of carrying capacities up to 8.4 metric tons (over 18,500 lbs.) per drive. This drive operates with extreme efficiency in the area of 40 knots (46 mph):

Intended For Military, Commercial, Medium Duty, And Recreational Performance The Konrad 680b Offers

  • Oversized bearings
  • Thicker walled casings
  • Dual, counter rotating propeller
  • Continuous oil circulation for cool operation
  • No corrosive exhaust through drive
  • Precision machined super alloy gears
  • No failure-prone cone clutch
  • Minimal maintenance required
ApplicationRecreational or Commercial
Recreational or CommercialDirect or Remote (Jack or CV Shaft)
ExhaustNone through the sterndrive
Gear Ratios1.24:1, 1.43:1, 1.52:1, 1.74:1, 1.94:1
LubricationFull Immersion, seventeen quarts with external reservoir
PropellerDiameter Range – 15 in – 18.5 in (38 cm – 47 cm)
RotationCounter rotation
Steering Angle50° range
TransmissionReversing transmission required
Transom MountingTemplate available per application
Transom Requirements13° angle nominal, 6.4 mm – 79.4 mm (1/4 in – 3 1/8 in) thick
Trim/Lift SystemApproximate -6° to +10° trim, twin cylinders with electrohydraulic pump Approximate 30° of total lift range
Water PickupNone through the sterndrive