Yamaha Marine’s revamped 4.2-liter VMax SHO outboards produce 40 percent more battery-charging power and sport new styling that clearly distinguishes these high-performance from the rest of the line.

That's the tag line Yamaha Motor Corporation is using to promote their new line of four-stroke engines, the VMAX SHO series. SHO stands for "Super High Output," and the company is optimistic that ...