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2008 Mercury OptiMax 300 XS
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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.

 Manufacturer  Mercury
 Model Year  2008
 Model  OptiMax 300 XS
 MSRP  Request a Quote
 Engine Type  V-6 (60 vee)
 Horsepower  300 hp (224 kW)
 Displacement  193 ci (3,160 cc)
 Bore x Stroke  3.63 x 3.11 in. (92 x 79 mm)
 RPM  5,400 - 5,800
 Fuel Induction  2-stage direct fuel injection
 Lubrication  Electronic multi-point oil injection
 Ignition  PCM 07
 Starting  Electric (turn-key)
 Gear Ratio  1.62:1, 1.75:1 (SM), (TM) or 1.75:1 (FM)
 Alternator  60A
 Alternator Output  756W
 Shaft Length  20 in. (508 mm) / 25 in. (635 mm) / 30 in. (762 mm)
 Weight  (L) 505 lbs. (229 kg) / (XL) 517 lbs.(235 kg) / (XXL) 534 lbs. (242 kg)
 Steering  Right or left hand (FM), (SM) Right hand (TM)
*Does not include government fees, taxes, dealer freight/preparation, dealer document preparation charges, options, trailer or any finance charges (if applicable). final actual sales price will vary depending on options or accessories selected. All rebates have been deducted.