The Yamaha RX-Z 135 was a two-stroke naked bike manufactured by Yamaha Motor Corporation. It was introduced in April 1985 and sold in Malaysia, Singapore and Thailand. Production ended in July 2011.
The first generation of the RX-Z, released in 1985, was equipped with a five-speed transmission and a front disc brake. The model used the same platform and driveline as its predecessor, the RX-135. In 1990, the RX-Z engine was updated with a six-speed transmission. Yamaha also introduced the Yamaha Computerized Lubrication System (YCLS), along with a designed front cowl and gauge cluster. The third-generation RX-Z was introduced in 2004 with modified styling and the addition of a catalytic converter. Yamaha discontinued the model in 2011.