Mercury Racing is all about passion for perfection and the pursuit of peak performance. We have a reputation of exceeding consumer expectations in product quality and performance - something we've carried forward from the late Carl Kiekhaefer, Mercury Racing president Fred Kiekhaefer's father and founder of Mercury Marine. The all-new OptiMax 300XS outboard continues our heritage of delivering more power and performance than competitors with the same horsepower rating.
The heart of the new 300XS "Stroker" is a 3.2 Liter V-6 powerhead featuring a stroked and precision-balanced crankshaft for maximum power and performance. A dampener ensures smooth running throughout the engine operating range. New pistons feature an updated profile and a composite coating for improved wear life. Piston ring life is doubled thanks to a composite chrome coating.
The exhaust port, combustion chamber and fuel induction designs are direct descendants from our Formula 1 tunnel boat race engine. Airflow through the reed block fuel induction system is enhanced due to an enhanced air box design along with thinner reed material and the unique reed shape developed for Formula 1 racing.
As with the complete line of Mercury Racing OptiMax XS outboards, the 300XS comes with a heavy-duty direct fuel injection air compressor featuring robust maxi-coated mounting brackets and hardware for enhanced compressor durability and reliability.
|3.2 Liter V-6 powerhead features stroked & balanced crankshaft for maximum displacement & performance|
|Extensive R&D result in Formula 1 race based exhaust porting & reed block fuel induction design for top power|
|New combustion chamber design results in engine producing peak power longer at upper end of operating rpm range|
|A unique 2-stage direct-injection system atomizes fuel into small, uniform particles, resulting with a complete & instantaneous combustion|
|FueVair mixture is injected into the combustion chamber at 95 psi (15 psi higher fueVair differential than standard DFI or OptiMax product) for enhanced high rpm running quality|
|New PCM 07 microprocessor features a 14-pin Deutsch connector harness which incorporates engine ignition & SmartCraft CAN (controller area network) wiring in one connector|
|The SmartCraft Engine Guardian system monitors engine functions for early indications of problems that could lead to engine damage|
|The 60-amp, belt-driven alternator is the most powerful in its class|
|Electronic multipoint lubrication system delivers precise amounts of oil where & when it’s needed|
|Acoustically tuned foam cowling wrap & new exhaust bucket design results with quieter engine sound throughout the operating range|
|Through hull Noise Vibration Harshness (NVH) is further reduced on 25 in. and 30 in. models thanks to the use of softer upper & lower engine mounts|
|A new exhaust system, along with a foam lined cowl & attenuator for the compressor greatly reduces the operating Dba.|
|Torque Master, Sport Master & new Heavy-Duty Fleet Master gearcases are enhancing the versatility of the worlds most powerful available for virtually any application|