The GAS GAS EC 250 F 4T (2019-2022): A Wolf in Red Clothing

Introduction

When GAS GAS unveiled the EC 250 F 4T, it wasn’t just another dirt bike—it was a statement. Born from Spanish engineering grit and refined for modern enduro warriors, this machine bridges the gap between raw off-road capability and refined four-stroke performance. Designed for riders who demand precision in the mud, agility on rocky climbs, and reliability during marathon trail sessions, the EC 250 F 4T carves its identity as a no-nonsense enduro weapon. After spending days wrestling it through forest singletracks, hill climbs, and technical riverbeds, one thing became clear: this bike thrives where the pavement ends. Let’s break down why.

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Engine and Performance: Precision Meets Fury

At the heart of the EC 250 F 4T lies a liquid-cooled, 249.9cc single-cylinder four-stroke engine. But don’t let the displacement fool you—this isn’t a tame commuter mill. With a 78mm bore and 52.3mm stroke (3.1 x 2.1 inches), the engine prioritizes quick revving and explosive mid-range torque. The Keihin fuel injection system ensures crisp throttle response, whether you’re crawling over logs or pinning it through open fire roads.

What surprised me most was its versatility. The six-speed gearbox lets you lug the engine at near-idle RPMs in first gear for technical sections, while sixth gear delivers enough legs for connecting trails or short highway stints. The DDS wet multi-disc clutch (paired with Braktec hydraulics) offers buttery modulation, preventing arm pump during marathon clutch-heavy sections.

The inclusion of a counter balancer shaft is a game-changer. While most single-cylinders vibrate like a paint mixer, the EC 250 F remains eerily smooth, even when revving out to its 11,500 RPM limiter. Titanium valves reduce reciprocating mass, aiding reliability during prolonged high-RPM abuse.

Compared to two-stroke rivals, the four-stroke’s tractable power shines on slippery climbs. You won’t need to “fan” the clutch incessantly—just grip and rip. That said, hardcore racers might crave more top-end scream, but for 90% of riders, this engine strikes a Goldilocks balance.

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Chassis and Handling: Dance Partner in the Dirt

GAS GAS nailed the geometry here. The 25CrMo4 steel double-cradle frame feels like a hybrid of a trials bike’s flickability and a desert sled’s stability. With a 58.7-inch wheelbase and 26.5° rake, it’s nimble enough to pivot around trees yet planted at speed.

The WP XPLOR-USD 48mm forks and WP XACT rear monoshock (both offering 11.8 inches/300mm of travel) are the stars of the show. Out of the box, the suspension is plush over small chatter but resists bottoming on big hits. I tested this by launching off a series of eroded limestone drops—the bike ate them up without drama. For tighter trails, reducing compression damping by a few clicks transformed it into a roots-and-rocks vacuum.

Braking performance is confidence-inspiring. The front two-piston caliper bites a 260mm disc with progression, while the rear single-piston setup avoids lockup surprises. Ground clearance isn’t an issue either—14.2 inches (360mm) ensures skid plates stay unscathed even in rocky riverbeds.

At 234.8 lbs (106.5 kg) dry, it’s not the lightest in class, but the mass centralization makes it feel 20 lbs lighter mid-corner. The spoked wheels (21” front, 18” rear) wrapped in 90/90-21 and 140/80-18 tires provide predictable traction, though aggressive riders might swap to grippier rubber for hardpack or mud.

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Ergonomics and Comfort: Built for the Long Haul

The EC 250 F’s cockpit feels like a tailored suit. The 37.4-inch (950mm) seat height is accessible for shorter riders (thanks to a narrow profile), yet tall pilots won’t feel cramped. The handlebar bend positions your elbows naturally for attack posture, and the slim fuel tank—capacity 2.25 gallons (8.5L)—lets you grip with your knees without contorting.

Standing up for hours? No problem. The peg-to-bar relationship encourages an upright stance, reducing lower back fatigue. Even the lithium-ion battery placement feels strategic, keeping weight low and centered. My only gripe: the seat foam is firm for multi-day adventures. Consider an aftermarket seat cover or cushion for endurance events.

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Competition: How It Stacks Up

The 250cc enduro segment is fiercely competitive. Here’s how the GAS GAS holds its own:

1. KTM 250 EXC-F: The Austrian rival shares similar DNA (especially post-GAS GAS’s KTM acquisition) but uses a PDS rear suspension system. The EC 250 F’s linkage rear offers more progression, benefiting technical terrain. KTM’s aftermarket support is broader, though.

2. Husqvarna FE 250: With its composite carbon subframe, the Husky is lighter (227 lbs) and sharper turning. However, the GAS GAS’s steel frame absorbs trail junk better, and the electric start comes standard (unlike older FE models).

3. Beta RR 250 4T: Beta’s offering charms with a mellower powerband and plush Sachs suspension. It’s better for beginners but lacks the GAS GAS’s aggressive edge when the pace picks up.

Verdict: The EC 250 F 4T carves a niche for riders valuing suspension sophistication and four-stroke tractability. It’s a better technical terrain tool than the KTM/Husky but demands more rider input than the Beta.

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Maintenance: Keeping the Red Beast Alive

Ownership joys aside, here’s how to keep your EC 250 F 4T in fighting shape:

1. Air Filter Care: Frequent off-road use means cleaning the air filter every 10-15 hours. Upgrade to a twin-air filter with no-toil oil for easier maintenance.

2. Oil Changes: The engine’s titanium valves hate dirty oil. Replace every 15-20 hours with 10W-50 synthetic. MOTOPARTS.store stocks OEM-spec oils and filters.

3. Suspension Service: WP components need fresh oil every 80-100 hours. Check fork seals for leaks after muddy rides.

4. Chain & Sprockets: The X-Ring chain lasts longer if cleaned and lubricated after every ride. Swap worn sprockets early to avoid chain stretch.

5. Brake Fluid: DOT 4 fluid absorbs moisture over time. Bleed annually or if levers feel spongy.

6. Cooling System: Use distilled water with anti-corrosion additives. Check hoses for abrasion—common in brush-heavy trails.

Pro Tip: Keep a spare clutch lever (Braktec hydraulics are robust but not unbreakable) and fork seal kit in your garage. MOTOPARTS.store offers affordable aftermarket alternatives that withstand crashes better than stock parts.

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Final Thoughts

The GAS GAS EC 250 F 4T isn’t just a dirt bike—it’s a passport to places most riders never see. From its razor-sharp handling to the bulletproof four-stroke heart, this machine begs to be ridden hard and put away dirty (then meticulously maintained, of course). While it faces stiff competition, its blend of WP suspension wizardry and Spanish soul makes it a standout for riders who value substance over hype. Whether you’re prepping for a hare scramble or just exploring backcountry trails, this bike won’t let you down—as long as you return the favor with proper care. And when it’s time for upgrades, you know where to find us. 🏁

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Specifications sheet

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