SB4 7.0
Unleash 750HP
PASSION FOR PERFORMANCE
For decades we've been the leader in developing high performance marine engines and now we are here to take on the automotive aftermarket. It doesn't matter if it's in a boat or a car, our passion for speed and horsepower drives us to deliver the best products possible. We don’t just aim to outperform our competitors – we aim to outperform ourselves.
CUSTOM FOUR VALVE HEADS
Mercury Racing designed, Edelbrock® cast DOHC , four-valve cylinder heads.
INDUCTION SYSTEM
Computational Fluid Dynamics (CFD) and GT-PowerTM engine performance simulations were used to develop an optimized intake manifold featuring dual throttle bodies for maximum power and efficiency.
ROBUST DOHC VALVE TRAIN
Anti-backlash ground, high spec camshaft timing gears for enhanced engine durability and minimized engine Noise, Vibration and Harshness (NVH).
DOUBLE ROW TIMING CHAIN
Double row, roller chain primary drive, with Mercury Racing designed hydraulic tensioner for enhanced durability
CUSTOM CAMSHAFT PULLEYS
Pendulum absorber camshaft pulleys for enhanced belt life.
Built with Passion
Designed, developed and manufactured in-house, the naturally aspirated, 7.0 Liter SB4 engine features Mercury Racing’s exclusive aluminum four valve cylinder heads and dual overhead camshaft valve train integrated with a LS cylinder block packed with customized Mercury Racing hardware.
The QC4 is the quintessential crate engine and cannot be matched in terms of performance, run quality, durability and reliability.
At Mercury Racing, we use state-of-the-art testing facilities for design and development, utilizing 3D simulations and analyses on airflow, cooling, fuel and lubrication systems. Intense finite element analysis (FEA) studies are conducted on the head, block and rotating components to ensure an efficient and reliable powertrain. We have exceptional people on our side with the passion to deliver the best.
specs
Roadster Shop
BUILD YOUR DREAM
Ready to hit the road with SB4? Get connected with our distributor, Roadster Shop, for pricing information.
- 500R
- 400R
- 300R
- 250R
- 200R
- 150R
- 60R View R-Series
Experience the future of luxury from the most advanced high-performance outboard on the water.
Rise above with the 400R – where extraordinary power meets exceptional drivability.
A fusion of breathtaking speed and control, the 300R is pure adrenaline-pumping freedom.
The stunning 250R elevates high performance on single-engine bass and sport boats.
Sophisticated power and digital controls for an exceptionally comfortable high-speed experience.
A lightweight, exhilarating power plant for those who test the limits in midsized high-performance boats.
Unleash your potential with the 60R, crafted for serious flats anglers who demand the best.
- Dual Cal 1550/1350
- Dual Cal 1350/1100
- 1100
- 700 SCI
- 600 SCI
- 565
- 520 View Sterndrives
Unshakeable strength. Unbelievable speeds. Our most powerful sterndrive engine outmuscles all challengers.
Two selectable performance calibrations ensure you maximize your thrills based on available fuel.
With heart-pumping power and monumental torque, the 1100 delivers a purely exhilarating experience.
A compact, rugged, supercharged performance machine – the absolute formula for power.
With legendary drive, the 600 SCi shines on high-performance, single-engine boats.
A flawless blend of big-block power and effortless digital control that never fails to impress.
Hand-crafted with precision, this compact powerhouse cranks out 520hp of back-in-your-seat performance.
- ROS
- APX
- Sterndrive
On the challenging waters of offshore powerboat racing, nothing can match the strength of the ROS series.
APX engines dominate closed-course powerboat competition with the most advanced four-stroke racing technology.
When the only option is winning, offshore racers turn to Mercury Racing sterndrive competition engines.
- Profile
- Precision
- Cases & Covers
- Prop Hub Kits
Profile Series props are cast to your specs then expertly tuned and hand-balanced by experienced craftsmen.
Precision Series props are sculpted to perfection using 5-axis CNC technology.
The finest art deserves the best protection, and your Mercury Racing prop is no different.
From engine-specific to rugged, high-speed options, Mercury Racing hubs unlock absolute performance.
- Digital Zero Effort Controls
- Joystick Piloting
- Performance Active Trim
- Integrated Transom System
- X-Haust Noise Reducer
- K-Plane Trim Tabs
- DTS Perfomance Pedal
Experience total command from premium digital controls designed for smooth, drive-by-wire precision.
Dock and maneuver with ease thanks to precision-guided 360-degree handling.
Digitally controlled trim automatically adjusts to ensure the most efficient, smooth ride.
Made for Bravo One XR® sterndrives, with integral power steering cylinders for a clean, pleasing connection.
Bring your high-performance sterndrive in compliance with regional noise regulations.
K-Plane® trim tabs maintain instantly responsive performance under the most punishing conditions.
A new throttle input sensor is roughly 20% the size of the outgoing pedal’s sensor, reducing packaging space and simplifying mounting in tight cockpits.
- Racing Lubricants
Run at the redline with premium lubricants formulated to protect high-intensity engines regularly pushed to extremes.
In a world that sets limits, Mercury Racing sets you free. We craft the most advanced high-performance marine propulsion systems on the water, empowering you to live life at the extreme.
It began with an unquenchable desire to win. With roots in performance boat racing, we’ve spent more than five decades perfecting the art of speed while redefining what’s possible on the water.
Whether you want technical advice to unlock a new level of speed or you need routine service, Mercury Racing stands behind you with expertise and support.
The QC4 Factory Refresh Program is a chance to turn back the clock by having the same team of master technicians who originally built your engine restore it to factory-fresh condition.
- R-Series Outboard
- Sterndrive
- Competition
- 500R
- 400R
- 300R
- 250R
- 200R
- 150R
- 60R
- Dual Cal 1550/1350
- Dual Cal 1350/1100
- 1100
- 700 SCI
- 600 SCI
- 565
- 520
- ROS
- APX
- Sterndrive
- Propellers
- Controls & Rigging
- Oils & Lubes
- Profile Series
- Precision Series
- Cases & Covers
- Prop Hub Kits
- Digital Zero Effort Controls
- Joystick Piloting
- Performance Active Trim
- Integrated Transom System
- X-Haust Noise Reducer
- K-Plane Trim Tabs
- DTS Performance Pedal
- Racing Lubricants
-
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- Collaborations About Mercury Racing Our Heritage