Yamaha RX-King 135

The Yamaha RX-K 135 is a two-stroke engine motorcycle manufactured by the Yamaha Motor Company in Southeast Asia. It was also known as RX-King in Indonesia, RX-K in Malaysia and Singapore, RXT 135 in the Philippines, and as RX-135 in India.

Yamaha RX-King 135 / RX-K 135

Manufacturer	Yamaha Motor Company
Also called	RXT 135 (Philippines) RX-Concorde (Thailand) RX-135 (India)
Parent company	Yamaha Corporation
Production	1980–2009
Class	Standard/sport bike
Engine	132 cc (8.06 cu in) air-cooled 2-stroke Reed-valve single-cylinder)
Bore / stroke	58.0 mm × 50.0 mm (2.3 in × 2.0 in)
Transmission	5-speed constant mesh
Frame type	Double Cradle
Suspension	Front: Conventional telescopic fork Rear: swingarm with twin shock
Brakes	Front: Dual-piston caliper Rear: Drum brake
Tires	Front: 2.75-18-4 PR; Rear: 3.00-18-4 PR
Wheelbase	1,245 mm (49.0 in)
Dimensions	L: 1,970 mm (78 in) W: 735 mm (28.9 in) H: 1,065 mm (41.9 in)
Seat height	770 mm (30 in)
Fuel capacity	9.5 L (2.1 imp gal; 2.5 US gal)
Oil capacity	1 L (0.22 imp gal; 0.26 US gal)
Related	Yamaha RX-Z Yamaha RX-S/RX-Special 115 Yamaha RX-R 115 Yamaha RX-100/125 Yamaha YT-115

Model history

Before the RX-K, there was the RX 125 (1976) and the RX 100.^[1] The RX line was originally developed for the Indian market, where it was manufactured by Rajdoot and Yamaha. the RX name signifies "Rajdoot X".^[2] The original RX-K 135 was released in 1980, and was fitted with a bikini fairing and imported to Indonesia fully built-up. This model has a maximum power output of 17.5 PS (12.9 kW) at 8,750 rpm and 14.8 N⋅m (10.9 lb⋅ft) of torque at 8,000 rpm, and weighs 99 kg (218 lb).^[3] There was also the similar RX-S (later RX-Special), fitted with a 115 cc engine and also imported CBU.^[4] In 1983, the RX-K was updated to become the locally built RX-King.

Overview

In Indonesia the RX-King 135 was produced by Yamaha Indonesia Motor Manufacturing [id] beginning in 1983. The first RX-King had a new reshaped petrol tank and updated seat; because of the raised handle bars this was nicknamed "Cobra" in Indonesia.^[5] The first generation was particularly desirable as it was fitted with an imported, Japanese-made engine (engine codes Y1 and Y2) producing 18.2 PS (13.4 kW) and 15.1 N⋅m (11.1 lb⋅ft) of torque at 8,000 rpm.^[1] The engine had a Yamaha Energy Induction System (YEIS [ja]), developed after customer surveys suggested that Indonesian buyers preferred good fuel economy.^[5]

A locally manufactured engine replaced the imported version after 1991, with the new model being nicknamed the RX-King "Master".^[6] Maximum power crept up to 18.5 PS (13.6 kW) at 9,000 rpm.^[6] The Master was remoelled in 1997.

In 2002 a new version, the "New RX-King", was produced with a round headlight replacing the old square unit.^[5] The rear light was also changed, and the instrumentation was redesigned, and it was compliant with the stricter emissions requirements if the time. From 2006 the RX-King in Indonesia used a catalytic converter, which allowed it to pass Euro 2 regulations.^[6]

The motorcycle has had a negative association with snatchers (jambret) and pickpockets as they showed a preference for using the RX-King as a getaway motorcycle.^[2][4] Songs have also been written about it, such as "RX-King Senggol Dong" Boss By Jigo [id] and "Numpak RX-King" by Sodiq Monata [id].^[7] There were four generations of the motorcycle, sold in Indonesia from 1980 to 2009.