Gas Gas MC 250F 4T (2021-2023): A Motocross Weapon Refined for the Modern Era

Introduction

The Gas Gas MC 250F 4T represents a bold statement in the competitive 250cc motocross segment. Born from Spanish engineering roots and now backed by the technical prowess of the Pierer Mobility Group (shared with KTM and Husqvarna), this bike blends aggressive styling with serious off-road capability. Designed for riders who demand precision, agility, and relentless power delivery, the MC 250F carves its identity through a unique combination of lightweight chassis dynamics and a potent four-stroke engine.

During my test ride, the first thing that struck me was its "ready-to-attack" stance – the red-and-white livery pops against the dirt, while the ergonomics feel instantly familiar to anyone who’s thrown a leg over a modern European MX machine. But does it live up to the legacy of its Austrian siblings? Let’s dissect its performance where it matters most.

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Engine Performance: Controllable Fury

At the heart of the MC 250F lies a 249.9cc liquid-cooled single-cylinder engine, producing 46 HP (34 kW) at 14,000 RPM. While these numbers align with competitors, the character of this powerplant feels distinct. The Keihin electronic fuel injection ensures crisp throttle response, eliminating the bogging issues that plagued carbureted rivals of yesteryears.

• Low-to-mid-range grunt: The engine builds power linearly, making it forgiving for less experienced riders. You won’t find the explosive "hit" of some Japanese counterparts, but tractable power lets you focus on line choice rather than wrestling the throttle.
• Top-end scream: Rev-happy riders will appreciate how the motor pulls cleanly to its 14,000 RPM redline. Clutch work feels intuitive thanks to the Brembo hydraulics and wet multi-disc setup, allowing precise modulation during hard acceleration out of corners.
• 5-speed transmission: The gearbox ratios are tightly spaced, ideal for technical tracks. I rarely needed to shift mid-jump, and the lever action is smooth even under load.

Fuel efficiency is respectable for a competition-focused machine, with its 7-liter (1.85-gallon) tank providing ample range for 20-30 minute motos. Still, serious racers will want to pit for fuel during longer sessions.

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Chassis and Handling: Precision Meets Poise

Weighing in at 99 kg (218 lbs) dry, the MC 250F feels alarmingly light when flicked sideways. The 25CrMo4 steel double-cradle frame strikes a balance between rigidity and flex, offering predictable feedback through rough terrain. Paired with WP’s legendary suspension components, this bike shines in chaotic track conditions:

• Front suspension: The 48mm WP XACT USD fork (310mm/12.2in travel) absorbs square-edged hits with authority. Even at speed through braking bumps, the front end stays planted, inspiring confidence to charge harder into corners.
• Rear suspension: The WP XACT Monoshock (300mm/11.8in travel) works harmoniously with the linkage system. I noticed minimal kickback on landings, and mid-stroke support felt plush yet progressive during hard accelerations.

Steering geometry plays a crucial role here. With a 26.1° rake and 58.1-inch wheelbase, the MC 250F turns sharper than a sushi chef’s knife. It’s almost too quick for beginners – oversteer is a real possibility if you’re heavy-handed with the bars.

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Ergonomics: Built for Attack

The 950mm (37.4-inch) seat height might intimidate shorter riders, but the narrow chassis design makes dab-saving manageable. Standing up feels natural, with the handlebars (positioned slightly forward) encouraging an aggressive riding posture.

• Grippy seat cover: Even in muddy conditions, the textured seat keeps you locked in during hard acceleration.
• Lithium-ion battery: The electric start system (a godsend in races) adds minimal weight penalty.

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Competition: How It Stacks Up

The MC 250F enters a battlefield dominated by:

1. KTM 250 SX-F: Shares the same engine architecture but with a different mapping profile. The KTM feels more aggressive in mid-range, while the Gas Gas prioritizes controllability.
2. Husqvarna FC 250: Uses a similar engine but adds a composite carbon fiber subframe. The Husky feels marginally plusher in suspension but costs more.
3. Yamaha YZ250F: The Japanese rival counters with a broader powerband but weighs 6kg (13.2lbs) more. Yamaha’s reliability is legendary, though the Gas Gas’s Brembo brakes outperform its Nissin units.
4. Honda CRF250R: Honda’s Unicam engine is smoother, but the MC 250F’s chassis feels more agile in ruts.

Verdict: The Gas Gas positions itself as the "thinking rider’s bike" – less about brute force, more about finesse. It’s ideal for technical tracks where precision outweighs raw speed.

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Maintenance: Keeping the Fire Alive

As a MOTOPARTS.store journalist, I’d be remiss not to highlight key upkeep aspects:

• Oil changes: Use SAE 10W-50 MA2 synthetic oil (1.1L with filter). Frequent changes (every 5-10 engine hours) are critical given the high-revving nature.
• Air filter maintenance: The injection system reduces carburetor hassles, but a clean air filter remains vital. Upgrade to a twin-air foam filter for better dirt trapping.
• Brake fluid: Flush DOT 4/5.1 fluid annually. Consider stainless steel brake lines (available at MOTOPARTS.store) for improved lever feel.
• Cooling system: Use ethylene glycol-based coolant and inspect the WP seals regularly.
• Chain care: The 520 X-ring chain demands regular lubrication. Swap to a DID ERT3 chain for extended durability.

Pro tip: Invest in a hour meter to track service intervals accurately.

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Final Verdict

The Gas Gas MC 250F 4T isn’t just a rebadged KTM – it’s a focused machine that rewards skilled riders with its balanced handling and tractable power. While it lacks the outright horsepower of some rivals, its chassis and suspension package make it a formidable weapon on technical tracks.

For owners looking to elevate their experience, MOTOPARTS.store offers everything from performance exhausts to grippy footpegs. Whether you’re chasing podiums or perfecting your cornering technique, this Spanish stallion deserves a spot in your garage.

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Specifications sheet

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