A 100 cc version was launched in 2009 with a dts-si engine. After the success of the discover 100, Bajaj launched a 150 cc version and stopped production of the 135 cc variant.[5] The 125 cc variant was re-launched in 2011.The 125ST was launched in 2012.[6]Two new models- 100 T and 125 T powered by worlds first 4 valve twin spark- DTSi engine and new sporty designs was launched in 2013.Recently a combination of the classic bajaj discover and 100 t/125 ST , known as BAJAJ DISCOVER 100 M was launched . The bajaj discover 100M sports a 4 valve 100 cc engine with a maximum speed of 95 km/hr