In 2006, for emissions reasons, India Yamaha Motor replaced its RX 100 two-stroke motorcycle with the Yamaha Crux. What type of engine does the Crux have?
Yamaha Crux: The Yamaha Crux is a 106 cc, single-cylinder four-stroke motorcycle made by India Yamaha Motor. Yamaha Crux:  It was launched in 2004 replacing RX 100, as 2-Stroke engines were not able to meet government's emission norms.
i don't know