The Mercury Racing 400R outboard is designed for boaters who demand maximum torque, top-end power and precise high-speed control. It offers more low-end pull, more peak horsepower and a higher rpm range than any outboard in its category. This makes it a perfect match for performance center-console boats and catamarans that routinely run faster than 75 mph.<\/p>\n
A 5.7L V10 powerhead with Quad Cam Four Valve (QC4) technology sits at the heart of the 400R. Double overhead camshafts and four-valve aluminum cylinder heads allow the engine to breathe deeply at all rpm. A proprietary 92 mm throttle body and tuned intake work with the QC4 heads to maximize airflow and power.<\/p>\n
The heavy-duty throttle body servo produces instant throttle response. A Mercury Racing fuel pressure sensor maintains precise fueling during acceleration. The wide 6000\u20136600 rpm WOT range supports strong peak horsepower and offers a broad window for optimising propeller choice on different hull types.<\/p>\n
The exclusive Racing Advanced MidSection (Racing AMS) supports the V10 with tight-tolerance guide plates and stiff engine mounts. This setup stabilises the engine and improves high-speed handling. An optional integrated rear tie-bar bracket offers a strong and lightweight mounting point for precision steering on catamarans and other ultra-high-speed applications. The Racing AMS also isolates the powerhead from the transom to keep operation smooth and quiet.<\/p>\n
Two gearcase options let you tailor the 400R to your boat. The race-proven Sport Master gearcase is a surface-piercing design for boats capable of more than 85 mph and features low water pickups with a crescent leading edge for maximum efficiency. The Mercury Racing 5.44 HD gearcase is ideal for heavy bay boats and multi-engine performance center-consoles that need a more submerged gearcase and extra stern lift. Both options use a 1.60:1 gear ratio.<\/p>\n
Customers can choose Phantom Black or Cold Fusion White, each with Mercury Racing graphics and Devil Red Eye trim. A base Phantom Black version is also available without graphics for custom paint projects. Graphics and an application mask are supplied for installation after painting.<\/p>\n
All of this performance is delivered on readily available 87-octane (91 RON) fuel. Digital Throttle & Shift (DTS) provides smooth shifting and precise throttle response, while a high-capacity 150 amp charging system supports modern electronics and onboard systems.<\/p>\n","protected":false},"excerpt":{"rendered":"
Mercury Racing 400R<\/strong> is a 5.7L V10 outboard built for pure performance. It delivers more low-end torque, more peak horsepower and a higher rpm range than any other outboard in its class, ideal for performance center-consoles and catamarans running well beyond 75 mph.<\/p>\n Technical data<\/strong><\/p>\n\n
\n
\n Engine<\/td>\n Mercury Racing 400R<\/td>\n<\/tr>\n \n Horsepower<\/td>\n 400 HP \/ 298 kW<\/td>\n<\/tr>\n \n Max WOT RPM<\/td>\n 6000\u20136600<\/td>\n<\/tr>\n \n Engine type<\/td>\n V10, 64\u00b0 bank angle, 40-valve Dual Overhead Cam (DOHC)<\/td>\n<\/tr>\n \n Displacement<\/td>\n 5.7 L \/ 349 CID<\/td>\n<\/tr>\n \n Induction system<\/td>\n Naturally aspirated, QC4 Quad Cam Four Valve design<\/td>\n<\/tr>\n \n Fuel requirement<\/td>\n Unleaded 87 Octane minimum (R+M\/2) or 91 RON<\/td>\n<\/tr>\n \n Charging output<\/td>\n 150 A \/ 1890 W<\/td>\n<\/tr>\n \n Throttle & shift<\/td>\n Digital Throttle & Shift (DTS)<\/td>\n<\/tr>\n \n Midsection<\/td>\n Racing Advanced MidSection (Racing AMS)<\/td>\n<\/tr>\n \n Integrated rear tie-bar bracket<\/td>\n Available<\/td>\n<\/tr>\n \n Shaft lengths<\/td>\n 20", 25", 30" and 35"<\/td>\n<\/tr>\n \n Gearcase options<\/td>\n Sport Master or 5.44" HD<\/td>\n<\/tr>\n \n Gear ratio<\/td>\n 1.60:1<\/td>\n<\/tr>\n \n Dry weight<\/td>\n 695 lbs \/ 315 kg (lightest model)<\/td>\n<\/tr>\n \n Warranty<\/td>\n 3-year limited; up to 5 years with Mercury Product Protection<\/td>\n<\/tr>\n<\/table>\n","protected":false},"featured_media":101635,"template":"","meta":[],"product_brand":[3213],"product_cat":[362,3443,121],"product_tag":[],"class_list":{"0":"post-104038","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-mercury","7":"product_cat-mercury-en","8":"product_cat-mercury-r-series-60-400hj-en","9":"product_cat-mootorid-en","10":"product_shipping_class-rasked","11":"tm-no-options","13":"first","14":"instock","15":"sale","16":"taxable","17":"shipping-taxable","18":"purchasable","19":"product-type-variable"},"yoast_head":"\n