Gas Gas MC 65 (2021–2023) Review: A Pocket-Sized Powerhouse for Aspiring Champions

Introduction

The Gas Gas MC 65 isn’t just a minibike—it’s a gateway to motocross mastery. Designed for young riders transitioning from smaller bikes or adults craving a lightweight thrill, this Spanish-built two-stroke packs serious off-road credentials. From 2021 to 2023, it’s remained a staple in the competitive mini-cross segment, blending race-ready components with approachable ergonomics. After a day of ripping through tight trails and testing its limits on a motocross track, here’s why this bike deserves attention—and how it stacks up against rivals.

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Engine Performance: Two-Stroke Fury, Simplified

At the heart of the MC 65 lies a 64.9cc liquid-cooled two-stroke engine, a configuration that screams authenticity in an era shifting toward four-strokes. The carbureted setup (a Mikuni TMX 28, according to our sources) delivers raw, immediate power. There’s no waiting for turbo spool or electronic throttle response—just a crisp twist of the grip and a surge of adrenaline as the revs climb.

The 6-speed gearbox is a standout. Unlike many minibikes limited to 3–5 gears, this allows precise control across varied terrain. First gear crawls through technical sections, while sixth gear hits a satisfying top speed of ~85 km/h (53 mph) on open straights. The Formula hydraulic wet clutch is butter-smooth, reducing arm fatigue during aggressive shifts—a godsend for younger riders still building grip strength.

But here’s the kicker (literally): Starting requires a firm boot on the kickstarter. While electric starters dominate modern bikes, the MC 65 keeps it old-school. After a few tries, our test bike fired up with a raspy bark, emitting that classic two-stroke aroma that’s equal parts nostalgia and rebellion.

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Chassis and Handling: Lightweight Agility Meets Pro-Level Poise

Weighing just 53 kg (116.8 lbs), the MC 65 feels like an extension of your body. The 25CrMo4 steel central-tube frame strikes a balance between flex and rigidity, inspiring confidence when carving ruts or landing small jumps. With a 750 mm (29.5") seat height, it’s accessible for riders as young as 10, though the narrow seat and aggressive peg positioning hint at its race pedigree.

Handling highlights:
- Wheelbase: 1137 mm (44.8") provides stability at speed without sacrificing flickability.
- Ground clearance: 280 mm (11") laughs at rocks and roots.
- Maxxis tires (60/100-14 front, 80/100-12 rear) offer predictable grip, even in loose dirt.

Throwing the MC 65 into berms feels intuitive. The aluminum rims and lightweight construction let you correct mid-corner mistakes with a subtle knee shift—perfect for honing technique.

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Suspension and Brakes: WP Components Punch Above Their Weight

Gas Gas didn’t cut corners here. The XACT 35 WP USD fork (35 mm diameter) and WP PDS mono shock deliver 215 mm (8.5") and 270 mm (10.6") of travel, respectively. For a mini bike, these numbers are staggering. On our test ride, the setup soaked up whoops and smaller jumps effortlessly, though heavier riders might crave stiffer springs.

Braking is handled by single discs front and rear. While not as powerful as full-sized bikes, the Nissin calipers provide ample stopping force for 65cc speeds. The rear brake’s modulation stood out—easy to drag without locking up in corners.

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Competition: How the MC 65 Stacks Up

1. KTM 65 SX

KTM’s offering shares the same displacement but uses a semi-dry sump engine for reduced oil starvation risks. However, the KTM’s air fork can’t match the MC 65’s WP suspension plushness. Gas Gas also undercuts KTM on price in many markets.

2. Husqvarna TC 50

The TC 50 targets a younger audience with a smaller 50cc engine. It’s lighter (49 kg / 108 lbs) but lacks the MC 65’s six-speed versatility.

3. Cobra CX65

Cobra’s race-focused CX65 boasts a chromoly frame and adjustable suspension, but its kickstarter requires Herculean effort compared to Gas Gas’s user-friendly setup.

Verdict: The MC 65 splits the difference between accessibility and race readiness. It’s less intimidating than the Cobra, more sophisticated than the Husqvarna, and a value play against the KTM.

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Maintenance: Keeping the Two-Stroke Spirit Alive

1. Premix Fuel:
Mix high-quality 2T oil at a 1:40 ratio (25 ml oil per 1 liter fuel / 0.85 oz per gallon). Opt for synthetic oils like Motorex Cross Power 2T to minimize carbon buildup.

2. Air Filter Care:
Clean the foam filter after every ride using a biodegradable solvent. MOTOPARTS.store offers pre-oiled Twin Air filters for quick swaps.

3. Chain Maintenance:
The 1/2 x 1/4” chain needs regular lubrication. Consider upgrading to a DID ERT3 for durability.

4. Cooling System:
Check coolant levels monthly. Use ethylene glycol-based mixes and inspect hoses for cracks.

5. Top-End Rebuilds:
Two-strokes demand frequent piston changes—every 20–30 hours for racers. Keep a spare piston kit (54 mm bore) on hand.

Pro Tip: The hydraulic clutch uses DOT 4 fluid. Bleed it annually or if engagement feels spongy.

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Conclusion: A Future Classic in Miniature

The Gas Gas MC 65 isn’t just a bike; it’s a mentor. It teaches clutch control, rewards precise throttle inputs, and forgives the occasional casing. While carburetors and kickstarters might seem archaic, they instill mechanical empathy—a trait every rider should cultivate.

Whether you’re chasing podium finishes or weekend singletrack smiles, this Spanish firecracker delivers. And when it’s time to tweak, tune, or rebuild, MOTOPARTS.store has the gear to keep your MC 65 snarling for years.

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Specifications sheet

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