MJX Hyper Go 10303 & 10304 Review: The New 1/10 Rally Cars Bringing WRC Style to Everyday RC Drivers

Two New Rally Cars That Push MJX Into a Different League

When MJX first stepped into the rally segment with their smaller 1/14 and 1/17 platforms, they earned attention for making scale rally cars that were inexpensive yet unexpectedly fun. The arrival of the new 1/10 models—the Hyper Go 10303 Citroën C3 WRC and Hyper Go 10304 Volkswagen Polo R WRC—feels like a moment where MJX stopped experimenting and decided to build something that confidently competes in the mainstream hobby space.

Both cars land with licensed bodies, sensored brushless electronics, a stiff 7075 chassis, and a thoughtful magnetic/clip hybrid body mount that looks much better in person than early photos suggested. While the shapes differ, the spirit is the same: a visually striking platform designed for street pulls, rally-style parking-lot runs, and dirt transitions without drama.

First Impressions: A Heavier, More Planted 1/10 Platform

The first thing that stands out is weight. At just over 2.1kg ready-to-run, the 10303 and 10304 feel substantially more serious than the earlier Hyper Go models. The 7075 aluminum chassis plates give each car a rigidity you can feel instantly when lifting or flexing it. The suspension arms, shock towers, upper braces, and hinge pin holders also look much more mature than MJX’s entry-level offerings.

The bodies are molded nicely—deep character lines, proper WRC proportions, and lighting systems that power up as soon as the magnetic contacts snap into place. And yes, they do include a dust cover under the body, which doesn’t completely seal, but absolutely helps on gravel entries and patchy fields.

Driving Experience: From Street Pulls to Loose Dirt

What surprised many drivers, including reviewers, is how different these cars behave depending on surface and spring choice. Out of the box, the shock preload is relaxed, giving the chassis a tall stance similar to older rally cars. On asphalt, that height can make the car feel a little unsettled, especially at wide-open throttle where the gyro is working overtime.

One reviewer went as far as swapping to the softer silver springs included in the box, and the transformation was immediate: less rebound over cracks, more predictable turn-in, and dramatically fewer traction rolls. It’s rare to see a manufacturer include springs that meaningfully alter how the vehicle drives, and in this case, MJX deserves credit.

Sensored Power Delivery That Feels Refined

Both models feature a 3652 sensored brushless motor paired with an 80A sensored ESC. For newcomers, “sensored” simply means the system knows the exact rotor position at all times, resulting in smoother, more linear throttle feel—noticeable even during low-speed parking-lot maneuvers.

With 2S batteries, speeds hover in the high 40 km/h range. Move to 3S, and you’re suddenly seeing 70 km/h passes that feel stable on open ground. One reviewer clocked 43 mph in cold weather with imperfect pavement, which speaks well for the underlying power.

MJX also included app connectivity to adjust throttle curve, punch level, braking force, and BEC voltage. The ESC programming isn’t just a spec sheet bullet—it genuinely helps the car adapt to different drivers.

The New 7075 Chassis: Strengths, Limitations, and Tuning Notes

The most meaningful upgrade is the chassis itself. The 7075 plate is thick, stiff, and resists bending even after repeated front impacts. Reviewers who drove into steel signposts learned this firsthand. Suspension geometry is adjustable at the camber and toe links, though shock mounting positions are fixed. The platform also omits a center differential, which some RC purists noticed instantly.

For rally-style driving—transitional surfaces, drifting entries, or launches on mixed dirt—this locked-center layout gives predictable 4WD behavior. For high-speed flat asphalt, a center diff would add a bit more refinement, but for most buyers in this price segment, the current setup feels satisfying.

A Practical Note on Battery Fitment

Although MJX sells its own packs, the battery tray accommodates a wide range of third-party 2S and 3S options. In testing, the reviewer slid a full-size pack into the tray and found it snug but workable. Soft packs also fit without fuss, making the platform surprisingly universal for upgrades.

For drivers wanting maximum punch and reliability on 3S, an upgraded pack makes a noticeable difference. A strongly recommended choice is the CNHL Racing Series 5200mAh 2S 100C Hard Case, which delivers high discharge performance while fitting securely in the tray.

A full collection of compatible packs is listed here: MJX Hyper Go 1/10 Rally Car Battery Collection.

Comparing the 10303 and 10304: Body, Feel, and Small Differences

While the core chassis is shared, the 10303 Citroën and 10304 Volkswagen offer two distinct driving personalities simply because of their body design. The front aero on the 10304 Polo directs a bit more airflow downward at speed, giving a slightly more planted feel during high-speed pulls. The Citroën C3 WRC body, meanwhile, has a more aggressive rear wing and a taller greenhouse profile, which looks striking in motion.

Both include additional springs, rod ends, and a set of off-road rally tires. If your terrain leans toward mixed dirt, the off-road set transforms the experience. Drivers also noted the servo linkage redesign—positioned higher so it doesn’t trap rocks, a major improvement over earlier small-scale MJX models.

Durability: The Real-World Impact Test

Cold-weather running revealed that the upper suspension links can snap if hit directly against poles or curbs. Fortunately, MJX includes replacements in the box. The magnetic LED connectors occasionally flickered when fine dust accumulated on the magnets, but the issue resolved by clearing the contact surfaces.

Aside from these minor observations, nothing structural failed. Even after several end-over-end rolls and a few direct tree hits, the chassis plates and drivetrain remained unaffected.

Where the Platform Fits in the Broader Hyper Go Lineup

Drivers familiar with the brand will instantly recognize DNA from models like the Hyper Go 14303 Drift/Rally Car. But the 10303 and 10304 are clearly positioned as a step above—more stable, more tunable, and far more realistic in scale appearance.

For many hobbyists, these may be the first MJX cars that feel like a platform to grow with rather than outgrow.

Recommended Upgrades for a More Mature Driving Feel

While the cars are very complete out of the box, several upgrades unlock even more potential:

• Higher-discharge LiPo battery – for instant punch and stronger braking authority.
• Silver springs (included) – the quickest way to improve asphalt behavior.
• Dust-resistant servo boot – if you frequently drive on fine gravel.
• ESC tuning via the mobile app – adjusting punch and brake bias transforms how the chassis rotates.

Again, battery options specifically curated for these rally cars can be found in the MJX Rally Upgrade Collection.

Final Thoughts: A Surprising Leap Forward for MJX

The MJX Hyper Go 10303 and 10304 are not simply larger versions of earlier models—they mark a real turning point. The driving feel is smoother, the tuning range broader, and the overall refinement noticeably higher. The 7075 chassis and sensored motor system elevate the platform out of the “entry-level” zone and into something that hobbyists can genuinely enjoy, modify, and rely on long-term.

If you’ve followed MJX over the past year, you know how quickly they have been iterating. These two rally cars show what happens when a brand listens carefully to user feedback and solves the exact problems early users pointed out.

Strong performance, a licensed WRC appearance, and clear upgrade paths make these some of the most interesting sub-$300 rally cars on the market right now.