14 August. Friday 2026
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
General information | |
| Color Options | Red/white |
| Category | Cross / motocross |
| Year | 2025 |
| Model | GAS GAS MC 85 17-14 |
Engine and Transmission Specifications | |
| Starting | Kick |
| Clutch | Wet, multi-disc clutch, Formula hydraulics |
| Final Drive | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling System | Liquid |
| Ignition | MEDJ digital EMS |
| Induction | Carburettor. Keihin PWK 28 |
| Bore x Stroke | 47.0 x 49.0 mm (1.9 x 1.9 inches) |
| Max Torque | 85.0 Nm (8.7 kgf-m or 62.7 ft.lbs) @ 2025 RPM |
| Engine Type | Single cylinder, two-stroke |
| Capacity: | 84.9 ccm (5.18 cubic inches) |
| | |
Physical measures and capacities | |
| Fuel Capacity | 5.40 litres (1.43 US gallons) |
| Wheelbase | 1282 mm (50.5 inches) |
| Ground Clearance | 308 mm (12.1 inches) |
| Seat Height | 845 mm (33.3 inches) If adjustable, lowest setting. |
| Dry Weight | 68.0 kg (149.9 pounds) |
GAS GAS Gas Mc 85 17 14 dimensions and frame | |
| Wheels | 1.40 x 17´; 1.60 x 14´ |
| Rear Brakes | Single disc |
| Brake Disc Diameter | 220 mm (8.7 inches) |
| Front Brakes | Single disc |
| Rear Tyre | 90/100-14 |
| Front Tyre | 70/100-17 |
| Rear Wheel Travel | 289 mm (11.4 inches) |
| Rear Suspension | XACT WP PDS mono shock |
| Front Wheel Travel | 278 mm (10.9 inches) |
| Front Suspension | XACT 43 WP Upside-Down fork, 43 mm |
| Frame | Central-tube with double-cradle. |
| | |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Update specs | Report missing specs or required updates. |
| Rake (fork angle) | 26.5° |
| Exhaust system | Aluminium |
| Driveline | 428, Non-sealed chain. Primary drive: 20:64. Final: 13:46. |
Performance Profile & Rider Fit
Best For
Track20%
City5%
Cornering60%
Daily Riding5%
Touring5%
Passenger0%
Rider Profile
| Best For | This is a small-wheel youth motocross machine built specifically for young, developing riders progressing through the ranks, not for adults or beginners of any age. |
| Purpose | It exists purely for competitive youth motocross and off-road track riding, delivering race-tuned two-stroke performance in a scaled-down chassis. |
| Rider Fit | Sized for a young rider's body with an 845mm seat height and a feather-light 68kg dry weight, it demands a compact, athletic build typical of pre-teen racers rather than full-size adults. |
| Character | Sharp, high-revving, and eager, this two-stroke rewards aggressive clutch and throttle control with explosive light-bike agility on motocross tracks. |
| Not Ideal For | It is not suitable for adult riders, road use, touring, passengers, or anyone seeking a low-maintenance, easygoing bike. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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