Mercury Racing
Mercury Racing 300R: specifications
The Mercury Racing 300R is an outboard rated at 300 hp with V8 (eight-cylinder V) architecture.
Key figures
- Power
- 300hp
- Dry weight
- 232.2kg
- Displacement
- 4,600cm³
- Alternator output
- 85A
- Indicative price
- n/a
- Maximum warranty
- 5years
Sources and technical context
Document year: 2025.
Manufacturer's official documentation. The original document link has not yet been recorded for this page.
Notes and conditions (FR)
Technical specifications
Block & combustion
| Architecture | V8 |
|---|---|
| Cylinders | 8 |
| Cycle | 4-stroke |
| Displacement | 4,600 cm³ |
| Bore × stroke | 92 × 86 mm |
| Compression ratio | n/a |
| Max rpm | 5800–6400 rpm |
| Specific output | 65 hp/L |
| Fuel system | EFI |
| Min. fuel | RON 95 (87 AKI mini), E10 maxi |
Transmission & gearcase
| Gear ratio | 1,75:1 |
|---|---|
| Propeller configuration | n/a |
| Counter-rotating dual prop | n/a |
| 2-speed gearbox | No |
| Counter-rotating version | Yes |
| Available shafts | n/a |
Weight & footprint
| Dry weight (transom load) | 232.2 kg (à sec, config. la plus légère) |
|---|---|
| Power-to-weight ratio | 1.29 hp/kg |
Electrical charging
| Alternator (max) | 85 A |
|---|---|
| Amps per horsepower | 0.28 A/hp |
Control & integration
| Digital throttle & shift (DBW) | Yes |
|---|---|
| Control | DBW |
| Steering | n/a |
| Power steering | Yes |
| Docking joystick | In-house |
| GPS position hold | No |
| Direct injection | No |
| VTEC (variable timing) | No |
Cost & warranty
| Public price | n/a |
|---|---|
| Cost per horsepower | n/a |
| Base warranty | 3 years |
| Maximum warranty (conditional) | 5 years |
Operation & compliance
| Emissions standard | RCD |
|---|