The DF225 V6 four-stroke outboard is packed with technology. This four-stroke engine has large displacement, lots of torque and plenty of power. This four-stroke engine is a clean runner and certified with a Three Star Ultra Low emission rating from the California Air Resources Board (CARB) and has also met the EPA 2010 standard. So if you want to run with a proven winner, go four-stroke. Go Suzuki.