
Mercury Launches New 500-hp Outboard
Marking its 50th anniversary, Mercury Racing just introduced its new 500-hp outboard designed for fast luxury sport boats. The new 500R V8 has Mercury Racing’s exclusive supercharger, and it not only has 50 more horsepower but also 10 percent more torque than the company’s 450R. It has a 4.6 liter, 64-degree FourStroke powerhead and is designed for pump fuel with an 89 octane rating. The company says the 500R is “the most exciting production outboard to ever emerge from Mercury Racing.” The 500R tops out at 6,600 rpm. To handle all that power, it has upgraded its powerhead, cooling system,…