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Yamaha DT50M official photo

Yamaha DT50 M & Yamaha DT50 MX Series

The Yamaha DT 50 was a single cylinder 49cc two-stroke Trail bike introduced by Yamaha in 1978. Its production lasted 3 decades, developing from the "M" series to the Mono-Cross (MX) series to the liquid cooled Yamaha DT50LC or in some countries known as DT 50X and finally DT 50R.

Yamaha DT50 M

The first of the 19 different models, was the Yamaha DT50M, produced from 1978 to 1981. This small-engined bike was designed primarily for novice motorcyclists. It featured twin shock rear absorbers, rounded fuel tank and 19"/17" front and rear wheels.

Its popularity, especially in Europe, exceeded the manufacturer's expectation and the street version of this bike, Yamaha RD50, was introduced shortly after.

Yamaha DT50 MX

The Yamaha DT50MX superseded the M version in 1981. Equipped with a single shock mono-cross rear suspension and new, more angular fuel tank, it quickly became the most common 50cc Yamaha trail motorcycle of the whole Yamaha DT Series.

It remained in production until 1996. Over the years, it gained a CDI ignition system and in 1986 a square bodied direction indicator lights (2FN MX-S model). Otherwise, the motorcycle remained largely unchanged.

Yamaha DT50 LC / DT50 X

In the late 1980s, a liquid-cooled engine became a norm for a majority of Yamaha motorcycles, with the DT50 being no exception. A taller fuel tank was introduced, and the appearance was changed dramatically with a rectangular shaped facing and air vent beneath the headlamp.

Depending on the model, the intake system was either a Mikuni VM18 or a TK carburettor. The exhaust pipe was an expansion chamber type with interchangeable addons (BigOne and DEP manufactured an improved system).

Yamaha DT 50 M & DT50 MX Parts

As Yamaha DT 50 models evolved so did parts, some are still being used nowadays and are available from Yamaha dealers directly, some were made obsolete. We offer quality reproductions of some of the most desired Yamaha DT50 motorcycle parts on the market. We understand that especially rubber parts and seals disintegrate over time. 


Feel free to browse this category of parts for all the Yamaha DT50 Series, but make sure you double-check the parts list for compatibility with your particular model.

Oil Pump & Tank

Rebuilding an old oil pump is certainly easier than finding a new one on the market. Through we don’t supply hardware for it, we have a full kit of seals and gasket to help you restore your classic Yamaha lube oil pump in no time. 

Stand, Footrest & Brake Pedal

If exposed to element, footrest rubbers crack, we therefore stock front & rear footrest rubbers, gear lever as well as kickstart rubber. We also have a stand stopper and various nuts and bolts in stock.

Front Fork

Having tight-fitting front forks on trail motorbikes is a must. We keep in stock both, the oil seals and reproductions of matching dust boots. We also stock front and rear mud flaps.


Many of these parts have been discontinued for decades! We don’t aim to provide a complete list of spare Yamaha DT 50 parts, but If you can’t find a specific part on our website to fit your restoration project, or you need a parts list, please contact us via e-mail address or the contact-us form below.


We are located in the UK and dispatch parcels all over the World. Furthermore, we offer free shipping on orders over certain value. For regular customers, we have a Loyalty Program and opportunity to showcase their finished bike in the Customer's Motorcycle Gallery page.


Technical Specifications of Yamaha DT50M & Yamaha DT50MX

Model: Yamaha DT50M

Versions: DT 50 M/MX (2M9, 3A8, 13N, 5M3, 5M4, 5M6, 5N6, 20M, 26H, 3KB), DT50LC (17W, 5R2)

Also called: Yamaha DT50 Supermotard, Yamaha DT 50 Supermotard, Yamaha DT50 Enduro, Yamaha DT 50 Enduro

Year: 1978-92 (DT 50x until 2012)

Motorcycle Type: Trail

Dry weight: 72 kg

Ground clearance: 254mm (10inch)

Seat height 32.3 inches (820 mm)

Fuel tank size: 4.7 litres

 

Engine, Intake & Transmission

Displacement: 49cc

Engine: single cylinder, two-stroke

Top speed:  90 km/h (56 mph)

Fuel system:  Yeikei Y12P carburettor

Ignition: Flywheel Magneto

Lubrication system: Autolube

Cooling system: Air cooled

Gearbox: 5-speed

Transmission: Chain

Start up: Kick-start

 

Chassis, suspension, brakes and wheels

Front suspension: telescopic fork

Rear suspension: twin shock swing arm

Front brakes: drum brake

Rear brakes: drum brake