Yamaha RX-Z

Infobox Motorcycle
name = Yamaha RX-Z 135


aka =
manufacturer = Yamaha
parent_company =
production = 1987-present
predecessor = Yamaha RD125
successor = Yamaha FZ150i
class = Naked bike
engine = 135 cc 2-stroke
power = 20 PS @ 8,500 rpm
torque =
transmission = 6-speed return
suspension = Front: Telescopic fork
Rear: Dual shocks swingarm
brakes = Front: Disc
Rear: Drum
tires =
rake_trail =
wheelbase =
length=
width=
height=
seat_height =
dry_weight = 106 kg
wet_weight =
fuel_capacity = 13.0 l
related = Yamaha RX-135
Yamaha Y125Z
similar =

Yamaha RX-Z 135 is a 2-stroke naked bike manufactured by Yamaha Motor Corporation. Debuted in 1987, the RX-Z is very popular in Malaysia and Singapore and enjoys one of the longest current motorcycle product life in both countries, especially in Malaysia due to the absence of other street bike competitors to date. In 2004, the model was facelifted and a catalytic converter was installed.

Specification

* Engine: 2-stroke 135cc air-cooled engine
* Cylinder arrangement: Forward-inclined single cylinder
* Displacement: 133 cc
* Max power: 20 PS (15 kW) @ 8,500 rpm
* Max torque: 1.85 kgf·m (18.1 N·m) @ 7,500 rpm
* Max speed: 165 km/h
* Bore x stroke: 56.0 x 54.0 mm
* Compression ratio: 7 : 1
* Transmission: 6-speed return
* Clutch: Multiple-disc, wet manual
* Frame Type: Underbone steel tube
* Suspension (Front): Telescopic
* Suspension (Rear): Dual shock
* Brake (Front): Single-piston disc
* Brake (Rear): Drum
* Dry weight: 106 kg
* Fuel tank capacity: 13.0 L

Overview

Debuted in 1987, the Yamaha RX-Z was originally equipped with a 5-speed transmission with solid front disc brake. The model shared the same platform and chassis as its predecessor, the water-cooled Yamaha RD125. Shortly after the launch, the RX-Z became popular among young motorcyclists especially in Malaysia. A few years later, the engine was upgraded with the installation of a 6-speed transmission, together with newer instrument panel and handlebar switches, as well as a cross-drilled front disc brake rotor.

Since then, the design of the RX-Z remained unchanged until 2004 when the model was facelifted, with the rear lights borrowed from the Yamaha Y125Z. The facelifted RX-Z was equipped with a catalytic converter, sacrificing 1 PS of maximum power (original maximum power: 21 PS). However, the maximum torque remained unchanged but the low-end torque was improved compared with the early models. Some owners of the earlier RX-Z motorcycles may have problems during take-off because the engine tends to stall when an inexperienced rider tries to take off in the first gear. However, the problem was resolved in the facelifted model.

In Malaysia, the RX-Z is one of the motorcycle models often associated with Mat Rempit street racers. As a result, many Malay movies including Remp-It use the RX-Z in their movies.

See also

* Yamaha Motor Company
* Yamaha RD125
* Mat Rempit

External links

* [http://www.yamaha-motor-com.my Yamaha Malaysia website]