ARRMA Mojave Grom 4x4 223S BLX: Is This Compact Brushless RC Truck Worth Buying?

The ARRMA Mojave Grom 4x4 223S BLX is a smart buy for most people who want a compact 4WD brushless truck—provided they build the full entry package into their budget: LiPo packs, a compatible charger, and spares or wear parts. If you already own 2S or 3S LiPo packs and a charger, the BLX becomes an even clearer choice. Complete beginners on a tight budget should look at the brushed Mojave Grom; the BLX is not a toy, and it is not a 1/10-scale substitute.

Should you buy the ARRMA Mojave Grom 4x4 223S BLX brushless?

Put simply, the ARRMA Mojave Grom 4x4 223S BLX is a smart buy for most people who want a compact truck with real 4WD brushless performance, but only if they come in with the full cost picture: LiPo packs, a compatible charger, and spares or wear items. If you already own 2S or 3S LiPo batteries and a usable charger, the BLX math changes in your favor because the battery ecosystem is already paid for. If you are a complete beginner with no RC battery experience and a tight budget, the brushed Mojave Grom may give you more value and fewer surprises. The BLX model is not a toy-grade impulse purchase, and it is not a miniature 1/10 truck; it is a small, serious basher that rewards smooth throttle work and punishes owners who skip basic maintenance. That distinction matters because many shoppers pick a Grom by name and expect toy behavior, while others expect it to drive like a 1/10-scale rig; in reality it sits between the two.

Because ARRMA changes electronic packages and battery configurations between releases, the exact included items and the meaning of the '223S' designation should be confirmed on the official ARRMA site before you order. Marketing descriptions rarely tell you whether your current charger can handle a LiPo pack or which connectors come in the box. Independent hobby reviews can help you judge durability in real use, but only the manufacturer can tell you what is in the current retail box. That is why this buying guide treats official ARRMA documentation as the baseline and treats forum claims or third-party product listings as leads to verify rather than facts. If a number in another review conflicts with what ARRMA currently publishes, trust the manufacturer's page; the same logic applies to the brushed-versus-brushless Grom comparison. Prices shift, and the total ownership cost depends more on the battery system you already have than on the sticker price.

What exactly is the Mojave Grom 4x4 223S BLX?

The Mojave Grom 4x4 223S BLX is ARRMA's compact desert-truck-style basher, not a 1/10-scale monster truck. If you have seen the larger Mojave trucks in the same lineup, the Grom shares that low, wide visual personality but in a much smaller, more portable package. It shares the Grom family's small footprint, so it fits in a backpack and can be run in spaces where a full-size 1/10 truck feels cramped. The 4x4 drivetrain gives it the cornering and climb-over-curb confidence of a real off-roader, and the desert-truck body means it will slide and drift on loose surfaces rather than constantly turtle. It belongs to the same family as other Grom models that have built the brand's reputation for durable small-scale bashers, but the 4WD chassis and brushless electronics push it into a higher performance class. Think of it as the pocket-sized truck you grab when you have a spare thirty minutes and an empty parking lot rather than a shelf queen.

The naming convention could confuse you if you read '223S' as a battery-cell count. It is not a promise that the truck runs only on a 2S or 3S pack; you should treat '223S' as a model code and verify the battery input range on the official spec sheet. '4x4' is straightforward: all four wheels drive. 'BLX' refers to the brushless power system, which uses a brushless motor and a speed controller designed for higher output and longer component life than the brushed motor in the base Grom. 'Mojave' by itself is ARRMA's desert-truck styling language, while 'Grom' signals the smaller scale in the range. For a product comparison, look for 'Grom 4x4' and 'BLX' together in the official model name, because those words tell you what is under the shell and how much performance to expect. This matters because a used or third-party listing may carry the same body but hide brushed electronics under it.

The safest way to turn those labels into a buying decision is to open the official ARRMA product page for the Mojave Grom 4x4 223S BLX and check the included items, battery connectors, recommended LiPo cell counts, and receiver type. Earlier Grom versions used different electronics, and a retailer listing may combine old and new parts in one description. The official page removes much of that guesswork and is the source you should use when a spec in this article matters to your purchase. If the official page is not available where you shop, ask the vendor to confirm the current BLX electronics package before checkout.

Does the BLX brushless system change the driving experience?

Brushless power changes the driving experience in four practical ways: acceleration, top speed, efficiency, and maintenance. The BLX Grom accelerates with a sharper punch than the brushed version, which is thrilling on a straight driveway but also means you need lower throttle until you learn its traction limits. The extra top speed makes it better suited to open spaces, while the brushed Grom feels relaxed and forgiving on shorter runs. Brushless motors typically run more efficiently and require no brush changes over their life, but they drive a higher current through the electronics, so the battery and speed controller need to be matched to the system. If you mainly want a slow, manageable truck for a young first-time driver, the brushed Grom may actually deliver a better experience; if you want the truck to grow with you as your skills improve, the BLX has headroom. That difference is why the BLX is best framed as a step up for an active basher, not a starting point for a first-time RC parent.

With BLX power, the battery becomes a bigger part of your cost and decisions. Most owners run LiPo packs, and a LiPo charger is not the same as the wall charger that comes with a toy-grade car. Before choosing the BLX, check whether your existing charger can charge LiPo with the right connector and how many packs you already own. The truck cannot show its real personality on a weak, high-voltage-mismatched battery, and overworking a cheap pack can shorten its life. If you are starting from zero, bundle the cost of one or two good LiPo packs and a charger into the price of the truck; if that bundle blows your budget, the brushed version may be the more sensible entry point. Read the charger's manual for LiPo settings before first use, because balanced storage charging extends pack life.

Mojave Grom 4x4 BLX vs. other small-scale bashers

Comparing the Mojave Grom 4x4 BLX to other small-scale trucks comes down to five criteria: size, drivetrain, brushless-versus-brushed power, running location, and the total ownership picture, which includes batteries, charger, spare parts, and the time you spend cleaning. A truck that wins on paper in top speed can lose in practice if its electronics strain your existing equipment or its wear parts are expensive to replace. The matrix below maps typical buyer situations to the truck type that fits. No single model wins every scenario, so the right comparison starts with the space you plan to run in and the battery gear you already own.

Picture three shoppers. The first owns 2S and 3S LiPo packs and a charger, wants a carry-on-size basher that can handle parking-lot bashing after work, and has some throttle discipline. For that profile, the Mojave Grom 4x4 223S BLX is the strongest option because it reuses existing battery gear and gives the punch they already are prepared to manage. The second shopper is a parent buying a child's first real hobby-grade RC, with no LiPo experience; for them, the brushed Grom or another mild brushed small-scale 4WD is a better fit because it uses simpler packs and lower speed. The third profile is a hobbyist looking for a 1/10-scale truck to run on track-prepared surfaces with a large parts ecosystem; the Grom is too small and its handling too playful for that job, so a conventional 1/10 basher should win there. In every case, the differentiator is not a single speed number but whether the vehicle's scale and electronics match the space and gear you already own.

If your situation resembles the first profile, the Mojave Grom 4x4 BLX is the one to shortlist. That means you regularly run in driveways, small parks, skateparks, and maybe a temporary track rather than a full-size off-road course; you already have or are willing to buy LiPo packs and a proper charger; and you accept that a compact brushless truck will need careful throttle work on loose dirt and that spare parts will be part of your budget. If you want the raw feel of a larger-scale truck with stability at high speed, the small truck is not a substitute, no matter how capable the BLX electronics are. Matching your space and gear is the key: a great small truck is only great when the setting matches its scale.

What else should you budget for after buying a 4x4 BLX Grom?

Beyond the price of the truck, your starter budget needs room for a battery system, charger, and basic tools. A single LiPo pack is rarely enough because a fun session lasts longer than one battery; most owners buy at least two so they can run while the first pack charges, and those packs plus a capable charger can add a noticeable share to the total cost. You may also want a small tool set for swapping wheels and suspension parts, and a simple way to clean the truck after dusty runs. If you already own a compatible LiPo charger and packs, the BLX becomes a much better value because you are not paying for the battery ecosystem twice. If you don't, include those items in the comparison now rather than discovering the gap after the truck arrives. Treat the battery and charger as part of the purchase decision, not an afterthought.

Maintenance is a real cost line, not a selling slogan. Over time you will replace or inspect bearings, arms, shock parts, and body clips, and you will need to keep dirt and moisture away from the electronics. The care routine matters more than the exact purchase price: a truck that is rinsed and dried after muddy runs, has its bearings checked, and receives prompt attention to cracked arms will last far longer than one that goes straight back into the car neglected. Official ARRMA guidance can change as the model is revised, so check the current product page and manual rather than relying on a forum post from last season. In short, set aside not only money but also a little time for cleaning and inspection; that habit is what separates a toy that dies in months from a hobby-grade truck that stays fun for years.

What is the final decision rule?

Here is the decision rule you can reuse: buy the ARRMA Mojave Grom 4x4 223S BLX if you want a compact 4WD brushless truck, already own or are willing to buy LiPo packs and a compatible charger, and plan to run it in smaller outdoor spaces that reward a playful, slide-happy desert truck. Choose the brushed Grom instead if you are a pure beginner who wants a simpler battery experience, need a gift for someone who will not maintain it, or cannot justify the extra battery and charger spending right away. Buy a 1/10 truck instead if you need high-speed stability on big open courses and want the larger parts ecosystem. In other words, the BLX is not a universal answer; it is the right answer for a specific combination of gear, space, and willingness to care for the vehicle. Use it when comparing any small-scale model, not only the Grom.

Who should skip it? Skip the BLX if your total budget stops at the truck itself, because the battery system and charger will frustrate you. Skip it if you are shopping mainly on the word 'Grom' and expect a toy-grade product that needs no thought, because it is a serious small basher with real throttle response. Skip it if you expected a large 1/10 desert truck, because no amount of brushless power will change its small scale and more playful handling characteristics. And skip it if you are not willing to follow the care steps in the manual, because the maintenance is part of the ownership cost. Treat the list as a filter, not an afterthought. If none of those exceptions apply, the Mojave Grom 4x4 223S BLX gives you a lot of capability in a package small enough to carry everywhere.