Gas Gas SCHOOL 125 US: history, specs, pictures

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Gas Gas SCHOOL 125 US
Manufacturer
Production 2017
Class Trial
Engine
Single-cylinder 2-stroke, liquid cooled
Bore / Stroke 53.3mm x 53.3mm
Fuel System Keihin PWK 28 - Intake by reed valve
Transmission Gear box: 6-Speed

Final Drive: Chain

Clutch: GG 1/3 hydraulic-diaphragm-system
Suspension Front: Progressive linkage system
Rear: Mono shock absorber
Brakes Front: Single disc 185 mm
Rear: Single disc 150 mm
Front Tire 2.75 X 21
Rear Tire 4.00 X 18
Wheelbase 52.01 inches (1321 mm)
Length 79.09 inches (2009 mm)
Width 32.52 inches (826 mm)
Seat Height 25.98 inches (660 mm)
Weight 69.0 kg (wet)
Manuals Service Manual


The Gas Gas SCHOOL 125 US was a Single-cylinder 2-stroke, liquid cooled Trial motorcycle produced by Gas Gas in 2017.

Engine[edit | edit source]

A 53.3mm bore x 53.3mm stroke result in a displacement of just 124.8 cubic centimeters.

Drive[edit | edit source]

The bike has a 6-Speed transmission. Power was moderated via the GG 1/3 hydraulic-diaphragm-system.

Chassis[edit | edit source]

It came with a 2.75 X 21 front tire and a 4.00 X 18 rear tire. Stopping was achieved via Single disc 185 mm in the front and a Single disc 150 mm in the rear. The front suspension was a Progressive linkage system while the rear was equipped with a Mono shock absorber. The wheelbase was 52.01 inches (1321 mm) long.

2017 Gas Gas SCHOOL 125 US[edit | edit source]

Without losing that Gas Gas trial and off-road character, the new Trial School is adapted to a level less demanding than that of the professionals by offering only one size of engine: a 125 cc two-stroke. An engine size that helps a rider get on well with the bike without unpleasant surprises for any riders regardless of ability.