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The Konrad 620B considered the workhorse of the fleet is a dependable, robust drive. By combining Konrad’s proven, single propeller technology with strong shafts and gears, the 620B has set a new standard for stern drive durability.
INTENDED FOR MILITARY, COMMERCIAL, MEDIUM DUTY, AND RECREATIONAL PERFORMANCE THE KONRAD 620B OFFERS
- Oversized bearings
- Thicker walled casings
- One piece propeller shaft
- Continuous oil circulation for cool operation
- No corrosive exhaust through drive
- Precision machined super alloy gears
- No failure-prone cone clutch
- Minimal maintenance required
The Konrad 660B is well known for fast performance driven applications, such as extreme government patrol and military intercept. The 660B is built to meet the demand for speed and precision. Designed for 7-15 meter (23-50 foot) vessels seeking speeds up to 60 knots (70 mph):
INTENDED FOR MILITARY, COMMERCIAL, MEDIUM DUTY, AND RECREATIONAL PERFORMANCE THE KONRAD 660B OFFERS
- Oversized bearings
- Thicker walled casings
- Dual, counter rotating propellers
- Continuous oil circulation for cool operation
- No corrosive exhaust through drive
- Precision machined super alloy gears
- No failure-prone cone clutch
- Minimal maintenance required
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