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Konrad PRSI
[KonradPRSI]

The Konrad 540 PRS has proven to be a fantastic alternative for the obsolete MERCRUISER TRS® Stern drive system. The 540 PRS package is a direct bolt-on replacement for the aging TRS with no hull modifications necessary. With hundreds of successful conversions on the water, it has proven to handle greater power levels with unparalleled durability and performance. Most conversions can be completed within a day's work

540 PRS Duty Classification

High Performance
Maximum operation

100 hours per year for high performance applications at highly intermittent operation.
Gross weight to horse power less than 12.2 kg/kw (20 lbs./hp). No warranty.

540 PRS Installation/Operational Specifications

Application
High Performance

Corrosion
Protection Multiple anodes, all castings chromatized and layered with powder coatings

Engine Coupling
Standard TRS tailpiece coupling

Exhaust
None through the stern drive

Gear Ratios
1.21:1, 1.33:1, and 1.51:1

Lubrication
Full immersion, six quarts with external reservoir

Propeller
425 mm (16.75")

Rotation
Offered in either right or left hand rotation

Steering Angle
40° range

Torque Rating
Up to 1000 Nm (738 lb. ft.) input for recreational, lower for commercial applications

Transmission
Reversing transmission required

Transom Mounting
Template available

Transom Requirements
14° angle nominal, 6.4 mm - 57.2 mm (1/4 in - 2-1/4 in) thick

Trim/Lift System
Approximate –6° to +10° trim, twin cylinders with electro hydraulic pump. Approximate 40° of total lift range

Water Pickup
None through the stern drive

540 PRS Package Options

The Konrad PRS is the best alternative for Obsolete TRS Drives.
The common denominator for these applications is the durability, dependability and performance that only Konrad offers.

Standard Equipment (Supplied with stern drive)