| Yamaha RX-Z | |
| Manufacturer: | Yamaha Motor Company |
| Parent Company: | Yamaha Corporation |
| Class: | Naked bike |
| Engine: | 133cc two-stroke, |
| Bore Stroke: | 56mm54mm |
| Compression: | 7.0:1 |
| Power: | @ 8,500 rpm |
| Torque: | 1.85kgf @ 7,500 rpm |
| Transmission: | 5-speed (first generation 1985 to 1987) / 6-speed (2nd generation from 1990 until the last generation from 2004 to 2011.) manual transmission |
| Suspension: | Front: Telescopic fork Rear: Dual shocks swingarm |
| Brakes: | Front: Disc Rear: Drum |
| Tires: | 80/90-18 45H front, 90/90-18 51H rear |
| Wheelbase: | 1300mm |
| Length: | 1990mm |
| Width: | 725mm |
| Height: | 1160mm |
| Seat Height: | 770mm |
| Dry Weight: | 106kg (234lb) |
| Wet Weight: | n/a |
| Fuel Capacity: | 13L |
The Yamaha RX-Z 135 is a two-stroke naked bike manufactured by Yamaha Motor Corporation. Debuting in April 1985, the RX-Z was very popular in Malaysia and Singapore and Thailand and was sold from 1985 until production was ended in 2011.
In 2004, the RX-Z had a restyle and a catalytic converter was installed.
The first generation of the RX-Z (1985) was originally equipped with a five-speed transmission with solid front disc brake. The model shared the same platform and chassis as its predecessor the RX-135. The RX-Z became very popular among young motorcyclists in Singapore and Malaysia. A few years later in 1990, the engine was upgraded with a six-speed transmission, together with the introduction of the Yamaha Computerized Lubrication System or YCLS, as well as a new front cowl and new a gauge cluster.
The third generation RX-Z came out in 2004 when the model was updated, with the rear lights borrowed from the Yamaha Y125Z and is equipped a catalytic converter due to Euro 3 regulations and production was only up until 2011.
In Malaysia, the RX-Z was one of the motorcycle models often associated with Mat Rempits. As a result, many Malay movies including Remp-It use the RX-Z in their movies.
Present day and the RX-Z is very popular now in Malaysia, Singapore and Indonesia. Prices now are skyrocketing in Malaysia as in 2020 one hereby sold for 70,000 Malaysian Ringgit because it had rare and all original NOS Yamaha Genuine parts.