OS Engines have announced last October 2009 their new “truggy” engine, the OS MAX 25XZ. Since then I’ve searched the web for more information but nothing have been written since the press release in October 2009. Nothing on the www.osengines.com neither. That’s strange but this is not the point of this article.
The OS MAX 25XZ engine is the answer to people who wants an engine with more torque than a .21 engine and a better fuel economy than a .28. If we go back few years. There were many .25, .26 and .27 engines on the market. And suddenly, the trend was .21 and .28 engines only. I’m happy that OS Engines is coming out with a .25 engine. Knowing OS Engines, I’m convinced the OS MAX 25XZ will be a great engine.
By the way, here are the specs
- Displacement: 0.25 cu in (4.09 cc)
- Bore: 0.689 in (17.5 mm)
- Stroke: 0.669 in (17.0 mm)
- Practical RPM: 4,000-39,000
- Output: 3.1 hp @ 33,000 rpm
- Weight: 13.05 oz (370 g)