"a lot of info has been pushing me towards a doo 4 hole."
The 4 tec is a three cylinder engine. It's very smooth and very quiet with lots and lots of torque. There's no crankcase, instead the engine oil sits in an Oil Resevoir which allows them to mount the engine even lower. It's a wider engine and requires the XR Chasis to allow for added girth. There's no recoil on this engine and reverse is mechanical. (4 Strokes don't run backwards like a 2 Stroke will) The Engine Oil is synthetic and with a filter change runs about $45 a year. The Oil and Filter change take about 30 minutes and are easy to do. This is a Fuel Injected engine and aside from the oil and filter change, is pretty much maintenance free, I've had zero issues with mine. The mileage runs around 15 miles per gallon with a 10.6 gallon tank.