motorcycle.in.th — It feels like only yesterday I was grooving to the high-pitched exhaust whine of my Yamaha 135cc two-stroke, hands sticky with run-off 2T oil after top-ups and billows of blue smoke as I left every four-stroker easting my dust. The Yamaha two-stroke RXZ 135cc sure rates as an icon in my diary. Two-stroke bikes for long dominated performance arenas