Super High Output four SHO stands for Super High Output four-stroke technology. The old 3.3L engine has been upgraded to a 4.2L engine. The outboard is 34 pounds lighter than the V MAX Series II two-stroke engine it replaces in the Yamaha product line.

The I-4 V MAX SHO 115 is Yamaha's fastest 115-hp four stroke, ever, with a top speed of nearly 51 mph. * On top of its impressive speed, it features tech unheard of in its class, including a long-track intake system, free-flow exhaust and knock sensor.

To start, SHO stands for “super high output.” These outboard motors will get you zooming across the water at efficient speeds you've never experienced before. The Yamaha V MAX SHO boasts its iconic four-stroke fuel economy, which is much quicker than a classic two-stroke.

The VMAX series are outboards developed mainly for USA tournament anglers (Bass Pro) who demand high speed and reliability.

Yamaha's VMAX SHO (Super High Output) four-stroke engines have been designed to be the lightest, fastest and smartest high performance engines on the market.

The second it hit the water, the V6 V MAX SHO® defied all expectations. It brought four-stroke efficiency to the two-stroke world of competitive fishing.

Yamaha VMAX

The VMAX series are outboards developed mainly for USA tournament anglers (Bass Pro) who demand high speed and reliability.

To start, SHO stands for “super high output.” These outboard motors will get you zooming across the water at efficient speeds you've never experienced before. The Yamaha V MAX SHO boasts its iconic four-stroke fuel economy, which is much quicker than a classic two-stroke.

The features of the VMAX include an all-aluminium frame with its 1,679 cc (102 cu in) liquid-cooled 65° V4 DOHC engine used as a stressed member of the chassis, an electroluminescent instrument readout, Yamaha Chip Controlled Intake (YCC-I), fully adjustable suspension, anti-lock brakes, slipper clutch, a fuel tank ...

Typically, a 2-stroke engine creates more torque at a higher RPM, while a 4-stroke engine creates a higher torque at a lower RPM. The 4-stroke engine is also much quieter, a 2-stoke engine is significantly louder and has a distinctive, high-pitched “buzzing” sound.

Both engine types have their pros and cons, and the one that will work best for you depends on the needs of your application. While 4-stroke engines perform well and generally last longer than 2-stroke engines, 2-stroke engines are lighter and faster than 4-stroke engines.