Repower with Mercury Racing 450R outboards and rev up your season.
Make this your season to amplify your powerboat performance – repower with Mercury Racing 450R outboards. The supercharged power of the Mercury Racing 450R is certain to boost the acceleration and top speed of any performance boat, from a fast cat to a luxurious center console. With 40 percent more torque and 13 percent more horsepower than the legendary Mercury Racing L6 400R outboard, an upgrade to 450R motors is the hot ticket for boaters who want to lead the poker run pack or just put a little more Wide Open excitement into the boating season.
A Mercury Racing dealer can help make a repower an easy upgrade. With a quick survey of your boat, the dealer can advise on gearcase and propeller options, and suggest upgrades to controls and instrumentation. Like all Mercury Racing outboards, the 450R accommodates 26-inch center-to-center mounting on multi-engine transoms, perfect for hassle-free re-power installations when replacing L6 400R or earlier-model outboards.
We Wrote the Prescription for Power
Mercury Racing applies its supercharging expertise to extract incredible power from a 4.6-liter V8 powerhead, power that is unrelenting from hole shot to wide-open rpm with zero lag for instant throttle response. Delivering a true 450 horsepower from a package that weighs as little as 689 pounds, the 450R offers unmatched power density. The proprietary 64-degree block is topped with Mercury Racing Quad Cam Four Valve (QC4) cylinder heads and double overhead camshafts. The 5800-6400 rpm wide-open throttle (WOT) operating range permits the use of a broad selection of Mercury Racing propellers to optimize acceleration, efficiency, and top speed, including the new four-blade, 15-inch diameter Ventera propeller.
The exclusive Mercury Racing Advanced MidSection (AMS) features heavy-duty stainless steel guide plates and stiffened engine mounts that stabilize the outboard and enhance high-speed handling. An optional rear tie-bar bracket integral to the AMS provides a strong, ultra-light mounting point and uncluttered installation for catamaran and other high-speed applications. The AMS also isolates the powerhead from the transom to ensure run quality is smooth and quiet. Standard electro-hydraulic power steering offers confident and precise control at all speeds.
The 450R also has high-performance charging capacity. The 115-amp alternator is a match for extreme audio systems and power-hungry electronics. When the Idle Charge battery-management system senses low battery voltage it automatically increases engine idle rpm to boost alternator output until batteries are charged to the proper level. Pop open the industry-exclusive Top Cowl Service Door for routine engine oil checks and top-offs without removing the cowl.
Gearcase Options
The surface-piercing Sport Master gearcase, designed for boats capable of speeds in excess of 85 mph, features low water pick-ups and a crescent leading-edge for maximized efficiency, and for the 450R application, a stout one-piece 1.25-inch diameter stainless steel propshaft. From single-engine performance runabouts to multi-engine catamaran sport boats the Sport Master – in the correct application – will enhance boat handling, speed and efficiency. The available cambered skeg counteracts prop torque for improved performance and handling in single-engine applications. The 450R is also available with the 5.44 HD gearcase for lower-speed and traditional submerged applications. All 450R gearcases have a 1.60:1 gear ratio for enhanced acceleration and speed.
Go Digital
Mercury Transient Spark Technology applies pre-programmed timing advance to optimize torque output for stronger hole-shot performance. Adaptive Speed Control with a custom Mercury Racing calibration automatically holds engine rpm regardless of load or condition changes – such as rough water, tight turns, tow sports and lower speeds on plane – to maintain boat momentum with less-frequent throttle control adjustment.
The 450R is compatible with maintenance-free Mercury Racing Zero Effort Digital controls or any Mercury Marine digital control system, which can throttle up to six outboards with a single lever in some applications. Optional Joystick Piloting for Outboards (JPO) is available for boats rigged with two to six outboards and provides intuitive, fingertip 360-degree boat control for docking and maneuvering in tight quarters, plus the convenience of Skyhook® sea-holding features and integrated auto piloting.
Available Mercury VesselView displays offer more systems information and engine data than with any other system in the boating industry. VesselView can simultaneously monitor the RPM, speed, fuel flow and efficiency, temperature, trim and more on up to six outboards on an intuitive seven or nine-inch touchscreen display. VesselView also enables Advanced Sound Control, a dual muffler system that can be toggled between an ultra-quiet mode and a deep sport tone with a stirring growl on start-up.
Run Wide Open with Confidence
The Mercury Racing 450R outboard is backed by a three-year limited factory warranty and a three-year limited corrosion warranty. Extend that coverage for up to five additional years with a Mercury Product Protection factory-backed extended service plan.
See an authorized Mercury Racing dealer to start you repower project and get ready for a Wide Open boating season.
