Yamaha WR125 (1997-00)

The Yamaha WR125 was a two-stroke, single cylinder motorcycle produced between 1997 and 2000. It had a capacity of 124cc and a bore x stroke of 54 x 4 mm. The cooling system was liquid-cooled and had a compression ratio of 8.8:1. The bike was fueled through a carburetor, while the ignition was CDI-based. The bike had a kick start option. The Yamaha WR125 had a six-speed transmission and a chain-driven final drive. It featured a Marzocchi “Upside-Down” telescopic hydraulic fork with advanced axle for the front suspension, and a Sachs progressive “Soft Damp” type with single hydraulic shock absorber, spring preload, and compression and rebound adjustment for the rear suspension. The front and rear brakes were single-disc, and it had an 80/90-21 front tire and a 110/80-18 rear tire. The bike weighed 99 kg and had a fuel capacity of 9.5 liters. The Yamaha WR125 was reviewed in Motosprint 1990 Group Test, but there is no available information regarding its maximum power and torque output.

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Technical specifications:

Make Model: Yamaha WR 125

Year: 1997 – 00

Engine: Two stroke, single cylinder

Capacity: 124 cc / 7.6 cu-in

Bore x Stroke: 54 x 4 mm

Cooling System: Liquid cooled

Compression Ratio: 8.8;1

Induction: Car4buretor

Ignition: CDI

Starting: Kick

Max Power: NA

Max Torque: NA

Transmission: 6 Speed

Final Drive: Chain

Front Suspension: Marzocchi “Upside-Down” telescopic hydraulic fork with advanced axle; compression and rebound stroke adjustment

Rear Suspension: Sachs progressive “Soft Damp” type with single hydraulic shock absorber; spring preload adjustment, compression and rebound adjustment

Front Brakes: Single disc

Rear Brakes: Single disc

Front Tyre: 80/90-21

Rear Tyre: 110/80-18

Dry Weight: 99 kg / 218 lbs

Fuel Capacity: 9.5 Litres / 2.5 US gal

Road Test: Motosprint 1990 Group Test