Performance you will feel – instantly. A new naturally aspirated V10 5.7-liter powerhead features the deep-breathing Mercury Racing Quad Cam Four Valve (QC4) design with proprietary 92mm throttle body and tuned intake to maximize airflow and power. A proprietary 92mm throttle body and tuned intake work with the QC4 head to maximize airflow and power. The exclusive heavy duty throttle body servo motor is designed to produce instant throttle response, while a Mercury Racing fuel pressure sensor provides precise fueling under acceleration to further enhance throttle response. The race-proven Sport Master gearcase is a surface-piercing design intended for boats capable of exceeding 85 mph, and features low water pick-ups and a crescent leading edge to maximize speed and efficiency. It also features a 1.60:1 gear ratio. The Mercury Racing 5.44 HD gearcase option is ideal for heavy bay boats and multi-engine performance center console boats that require a more-submerged gearcase and benefit from added stern lift. It features a 1.60:1 gear ratio. The new Mercury Racing® Ventera™ propeller is designed to handle big outboard horsepower on fast center consoles, day cruisers and bay boats. This 15-inch diameter, four-blade prop was engineered specifically to carry more load with greater efficiency at high speeds and in semi-surfacing installations. An optional rear tie-bar bracket integral to the Racing AMS provides a strong, ultra-light mounting point for rock-solid precision steering on catamaran and other ultra-high-speed applications. SPECIFICATIONS: HORSEPOWER (HP/KW) 400 / 298 WOT RPM 6000-6600 ENGINE TYPE V10 (64-degree) with 40-Valve Dual Overhead Cam (DOHC) DISPLACEMENT (LITER/CID) 5.7 / 349 DISPLACEMENT (LITER/CID) Naturally Aspirated FUEL REQUIREMENTS Unleaded Regular 87 Octane Minimum (R+M/2) or 91 RON CHARGING (AMP/WATT) 150 / 1890 THROTTLE & SHIFT Digital Throttle & Shift MIDSECTION Racing Advanced Midsection MIDSECTION Racing Advanced Midsection INTEGRATED REAR TIE BAR BRACKET Available SHAFT LENGTHS (INCH) 20, 25, 30, & 35 GEARCASE Sport Master or 5.44" HD GEARCASE RATIO 1:60:1 DRY WEIGHT (LB/KG) 695 / 315 WARRANTY 3-Year Limited
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