Why MJX Hyper Go 1/10 Rally Cars Took Over 2025
The MJX Hyper Go 1/10 rally cars arrived right in the middle of what many hobbyists are calling the “year of the rally car”. After the success of the 1/14 and 1/7 Citroën and Polo platforms, a true 1/10 scale version was almost inevitable. The 10303 Citroën C3 WRC and 10304 Volkswagen Polo R WRC continue the same idea: licensed WRC bodies, sensored brushless power and a surprisingly serious 7075 aluminium chassis for the price.
Real-world running footage and user comments tell the same story. These cars are not just shelf queens. With two sets of wheels and tyres in the box, adjustable camber and toe, sway bars and an 80A ESC, they feel closer to a budget club racer than a toy-grade rally car. On gravel, wet grass and loose dirt, they are happy to slide, dig in and throw rooster tails all afternoon.
At the same time, most owners quickly learn that the electronics and the chassis are capable of more than the stock power system usually sees. Once a decent 2S or 3S LiPo is installed, the quoted 70km/h speeds become realistic, and the value gap to traditional entry-level kits becomes obvious.
Battery Fitment Guide for MJX 10303 & 10304 (2S / 3S LiPo)
Both the MJX Hyper Go 10303 and 10304 use the same 1/10 scale shaft-driven 4WD chassis. The battery tray is designed for 2S and 3S car packs, with enough height to accept a full-size hardcase LiPo rather than only short, low-capacity packs.
- Voltage: 2S (7.4V) and 3S (11.1V) LiPo supported by the 80A ESC.
- Typical capacity range: around 4000–6000mAh is a sensible balance between runtime and weight.
- Pack style: hardcase car packs are preferred for rally-style use, but softpacks can also be used if secured properly.
- Fitment: owners and reviewers have shown that full-size performance hardcase packs will fit the tray. It is a snug fit, but workable in practice.
The car does not ship with a standard XT60 or EC5 connector, so most drivers either use an adaptor lead or re-terminate the ESC leads to match their preferred LiPo brand. Once that small hurdle is cleared, the chassis is quite forgiving and accepts many mainstream 2S and 3S packs that share the same footprint.
Handling, Gyro Settings and How the Battery Affects the Drive
One of the most discussed traits of the MJX 1/10 rally chassis is its behaviour at full speed on tarmac. With the stock springs and gyro settings, the cars are tuned to slide and rotate easily for rally-style cornering. That is fun on loose surfaces, but on high-grip asphalt it can make straight-line runs a little twitchy, especially on 3S.
The battery you choose has a direct influence on this behaviour:
- Heavier packs shift the centre of gravity and load up the suspension more under braking and acceleration. That can increase weight transfer and make roll-steer more noticeable if the springs are set soft.
- Lighter packs make the car feel more lively and responsive, but may reduce stability when the surface is bumpy or dusty.
- High-discharge LiPo batteries give the sensored 3652 motor much sharper punch. On 3S, that extra torque highlights any alignment issues, slack in the steering system or over-aggressive gyro settings.
Many experienced drivers settle on a medium-capacity 3S pack in the 4000–5000mAh range, then fine-tune the front spring rate, shock preload and gyro gain to get a car that still feels like a rally machine, but no longer wanders down the road during speed runs.
CNHL LiPo Options for MJX Hyper Go 1/10 Rally Cars
Because the MJX 1/10 rally cars use a fairly generous full-length tray, it opens the door to a wide range of performance LiPo packs. Hardcase 2S and 3S packs with a standard 1/10 car footprint will generally fit, provided the wiring is kept tidy and the connector is either adapted or changed.
If you want to explore different battery options for the Hyper Go 10303 and 10304, start by browsing the main CNHL collections:
- 2S LiPo batteries for RC cars – suitable if you prefer cooler running and slightly gentler speeds while still keeping strong punch.
- 3S LiPo batteries for 1/10 rally and touring cars – ideal for reaching the advertised 70km/h and enjoying long pulls on open gravel or tarmac.
- Full CNHL LiPo battery range – for drivers who also run other platforms and want to standardise on one brand and connector system.
Within those ranges, look for packs that match the general dimensions of a 1/10 car battery and avoid going excessively heavy. In practice, a well-chosen 2S or 3S pack with good C-rating and consistent voltage under load will do more for drivability than simply chasing the highest possible capacity.
FAQ: MJX Hyper Go 10303 / 10304 Battery Upgrades
Can full-size CNHL hardcase LiPo packs fit the MJX Hyper Go 1/10 battery tray?
Yes. Reviewers have already test-fitted full-size hardcase packs and found that they do fit the tray. The fit is snug rather than loose, but once the pack is in place it works fine in normal running.
Is the 80A ESC suitable for high-discharge 2S and 3S LiPo batteries?
The 80A sensored ESC is designed for 2S and 3S use and pairs well with high-quality LiPo packs. Upgrading to a better battery will not usually stress the ESC; if anything, it lets the system deliver cleaner, more consistent power.
Does battery weight really affect straight-line stability?
It does. A heavier battery exaggerates weight transfer and can make any softness in the front suspension, toe-out or steering slop more obvious at speed. That is why many owners combine a sensible-capacity LiPo with slightly stiffer front springs or more preload when they focus on tarmac running.
What connector do these cars use from the factory?
The factory ESC does not come with a standard XT60 or EC5 plug. Most drivers either install a short adaptor lead or change the plug on the ESC to match the connectors used on their LiPo packs. Once that is done, swapping between different 2S and 3S packs becomes straightforward.
Is 3S always better than 2S for the MJX 1/10 rally chassis?
Not necessarily. 3S gives impressive top speed and strong punch, which suits open spaces and loose surfaces. For tighter areas, smaller car parks or very cold weather, a good 2S pack can actually be easier to control and less demanding on tyres, driveline and steering components.