."Both the 250 and 300 EXC TPI are Euro 4 compliant, proving that all it took was the application of simple, well established tech to bring two-strokes up to date – ..........."
"KTM says the new engine runs on an 80:1 fuel-to-oil ratio, whereas until now the typical two-strokes would require a ratio around 40:1 on average. .............. thus reducing the amount of smoke coming out of the exhaust by as much as 50 percent over pre-mix systems. "
http://newatlas.com/ktm-2018-direct-inj ... uro/49541/