O.S. 25XZ truggy engine
This new engine from O.S. was designed with truggy racing in mind and is ROAR legal. Since it sits in between a .21 and .28 engine, you’ll get an engine that gives you more than enough power for your truggy and great fuel efficiency while doing so. Some of its features include ABC construction, a 3-needle slide carb and a 10-fin, two-piece turbo cooling head.
Displacement: 0.25 cu. in. (4.09cc)
Bore: 0.689 in. (17.5mm)
Stroke: 0.669 cu. in. (17mm)
Practical rpm range: 4,000-39,000rpm
Weight: 13.05 oz. (370g)