Yamaha RD125: review, history, specs

**Yamaha RD125**
	Yamaha RD125
Manufacturer	Yamaha
Also called	RD125DX, RD125LC, RD 125 LC, RD 125 DX, RD 125
Production	1973 - 1983
Class	Classic
Engine	single cylinder, two-stroke
Bore / Stroke	56.0mm x 50.0mm
Compression ratio	6.8:1
Top Speed	78 mph (126 km/h)
Horsepower	16.63 HP (12.4 KW) @ 9000RPM
Spark Plug	NGK B8HS '75; NGK B8ES '76
Battery	YUASA 12N5-5A-3B '75 , '76
Transmission	Gear box: 6-speed ; Final Drive: chain ; Clutch: wet plate ;
Final Drive	Chain: 428x110
Front Sprocket	14T
Rear Sprocket	39T
Suspension	Front: Telescopic forks ; Rear: Dual rear shock preload adjustable
Brakes	Front: single disc ; Rear: expanding brake
Front Tire	2.75-18
Rear Tire	3.25-18
Wheelbase	49.02 inches (1245 mm)
Seat Height	29.49 inches (749 mm)
Weight	115.0 kg (wet)
Recommended Oil	Yamalube 10w-40
Fuel Capacity	3.43 Gallon (13.00 Liters)
Related	Yamaha RD200, Yamaha RD250, Yamaha RD350; Yamaha YFS200
Manuals	Service Manual
	Reviews ·

The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

The Yamaha RD125LC was a single cylinder, two-stroke Classic motorcycle produced by Yamaha between 1973 and 1983. It could reach a top speed of 78 mph (126 km/h). Claimed horsepower was 16.63 HP (12.4 KW) @ 9000 RPM.

Overview

Welcome to low compression and the permanent 90 Km (55 mph) limit. The engine reaches its initial peak at 6000 rpm, then trails along a plateau until 7000 rpm.

Engine

The engine was a liquid cooled single cylinder, two-stroke. A 56.0mm bore x 50.0mm stroke result in a displacement of just 123.0 cubic centimeters. Fuel was supplied via a membrane.

Drive

The bike has a 6-speed transmission. Power was moderated via the wet plate.

Chassis

It came with a 2.75-18 front tire and a 3.25-18 rear tire. Stopping was achieved via single disc in the front and a expanding brake in the rear. The front suspension was a Telescopic forks while the rear was equipped with a Dual rear shock preload adjustable. The RD125LC was fitted with a 3.43 Gallon (13.00 Liters) fuel tank. The wheelbase was 49.02 inches (1245 mm) long.

The Yamaha RD125 is a motorcycle produced by Yamaha from 1975 to 1981.

1975

1975 Yamaha RD125 in Maroon
1975 Yamaha RD125 in Maroon
1975 Yamaha RD125 in Maroon
1975 Yamaha RD125 in Maroon
1975 Yamaha RD125 in Maroon
1975 Yamaha RD125 in Maroon

1973 - 1980 Yamaha RD 125

In Media

References