GAS GAS Gas Mc 85 17 14 - 2025 Specifications and Reviews

The 2025 GAS GAS MC 85 17/14 is a lightweight competition dirt bike engineered for young riders transitioning to intermediate motocross. Its compact 845mm seat height and nimble 68kg frame deliver exceptional maneuverability and control on technical terrain. The bike excels in youth motocross racing with premium WP suspension and responsive single-disc brakes.

2025
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General information

Color OptionsRed/white
CategoryCross / motocross
Year2025
ModelGAS GAS MC 85 17-14
 
 

Engine and Transmission Specifications

StartingKick
ClutchWet, multi-disc clutch, Formula hydraulics
Final DriveChain (final drive)
Gearbox6-speed
Cooling SystemLiquid
IgnitionMEDJ digital EMS
InductionCarburettor. Keihin PWK 28
Bore x Stroke47.0 x 49.0 mm (1.9 x 1.9 inches)
Max Torque85.0 Nm (8.7 kgf-m or 62.7 ft.lbs) @ 2025 RPM
Engine TypeSingle cylinder, two-stroke
Capacity:84.9 ccm (5.18 cubic inches)
 
 

Physical measures and capacities

Fuel Capacity5.40 litres (1.43 US gallons)
Wheelbase1282 mm (50.5 inches)
Ground Clearance308 mm (12.1 inches)
Seat Height845 mm (33.3 inches) If adjustable, lowest setting.
Dry Weight68.0 kg (149.9 pounds)

GAS GAS Gas Mc 85 17 14 dimensions and frame

Wheels1.40 x 17´; 1.60 x 14´
Rear BrakesSingle disc
Brake Disc Diameter220 mm (8.7 inches)
Front BrakesSingle disc
Rear Tyre90/100-14
Front Tyre70/100-17
Rear Wheel Travel289 mm (11.4 inches)
Rear SuspensionXACT WP PDS mono shock
Front Wheel Travel278 mm (10.9 inches)
Front SuspensionXACT 43 WP Upside-Down fork, 43 mm
FrameCentral-tube with double-cradle.

Other specs

MaintenanceFind parts, fluids. filters, maintenance tools and service manuals at Amazon.com.
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Update specsReport missing specs or required updates.
Rake (fork angle)26.5°
Exhaust systemAluminium
Driveline428, Non-sealed chain. Primary drive: 20:64. Final: 13:46.

Rider Fit Visualizer

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 845mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2025 GAS GAS Gas Mc 85 17 14, with a cramped knee angle of around 75 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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