Arrma Mojave Grom 4x4 BLX Review: The Best Brushless Truck for Beginners

Yes, the Arrma Mojave Grom 4x4 223S BLX is worth it for most beginners. It delivers genuine brushless performance, a tough chassis, and real parts support at a price that beats larger brushless trucks. If you want the best value in a small 4x4, this is the one.

Is the Mojave Grom 4x4 Worth It? A Direct Answer

Beyond the simple answer, the Mojave Grom 4x4 earns its spot because it checks every practical box. The 223S BLX brushless system gives you a clear speed advantage over brushed rivals, while the 1/14 scale keeps it backyard-friendly and easy to store. You don't have to be an expert to enjoy it: the drive system is forgiving for new drivers, yet capable enough for an experienced owner to push hard on 3S. The build quality is, in a word, tough—composite chassis, oil-filled shocks, and sealed bearings all point to a truck designed for real abuse. And because it's a genuine Arrma model, replacement parts are easy to find. That's why, once you weigh speed, durability, and cost, the BLX version comes out ahead for most first-time brushless buyers. It's also a truck that grows with you: start on 2S for confidence, then move to 3S when you're ready.

Choosing the right RC isn't just about specs; it's about how the truck holds up after weeks of use. A cleaning guide for sensitive equipment notes that regular maintenance is what prevents breakdowns, and the same logic applies to hobby-grade RC. The Mojave Grom's sealed receiver box and accessible layout make routine care straightforward, so you can spend more time driving and less time repairing. When you compare ownership costs, the BLX system's lack of brushes eliminates a whole category of wear—making it a smarter pick for a first-time brushless owner. For instance, a simple post-run wipe-down and a monthly bearing check will prevent most of the reliability issues that send cheaper trucks to the trash. The maintenance message is clear: a truck that's easy to clean is a truck that lasts. This is why our recommendation weighs serviceability as heavily as top speed—because the best RC is the one that still runs after a season of backyard bashing.

223S BLX Brushless: The Specs That Matter

The 223S BLX brushless system is the heart of the Mojave Grom 4x4. This 3S-ready power plant pushes the 1/14-scale chassis to speeds that surprise people who dismiss small trucks as toys. Brushless motors use electronic commutation instead of brushes, which means more efficiency, more torque, and virtually no wear in the motor itself. For a beginner, that translates to longer run times and fewer parts to replace. The 4x4 drivetrain distributes power to all four wheels, giving you stable launches on loose dirt and predictable slides in corners. The included radio gives you enough control for learning throttle discipline. When you punch the throttle, the BLX system responds instantly without the cogging you sometimes feel in brushed motors. That smooth power delivery makes it easier to keep the truck under control, especially when you're learning to modulate speed through turns. And because the system runs cooler than many larger brushed setups, you can enjoy several packs back-to-back without worrying about overheating.

Durability is where the Mojave Grom earns its keep. The chassis is built from composite material that flexes on impact rather than cracking, and the suspension uses oil-filled shocks to soak up landings. The 1/14 scale is a deliberate design choice: it's big enough to handle grass and gravel but light enough to avoid the catastrophic breakage of heavier trucks. Many owners report that the truck survives hard crashes that would snap cheaper models. The included body is polycarbonate, so it resists scratches and can be replaced easily if you slide it into a curb. Parts support from Arrma is extensive, which means you can repair rather than replace after a bad hit. Sealed bearing carriers keep out dirt and debris, and the adjustable slipper clutch absorbs driveline shock. Even the steering linkage uses sturdy ball ends that pop back into place after impact instead of bending permanently.

Mojave Grom 4x4 vs. Key Rivals: Compare Before You Buy

When you're shopping in this price range, the Mojave Grom 4x4 competes with a few popular alternatives: the brushed Arrma Mojave Grom, the Traxxas Latrax Teton, and the Losi Mini-B. Each has strengths, but the BLX version stands out on speed and power. The brushed Mojave is cheaper but slower, making it a better choice for absolute beginners who aren't ready for brushless acceleration. The Latrax Teton is a proven 1/18-scale truck with a loyal following, but its smaller size means it struggles on taller grass. The Losi Mini-B is a buggy, not a truck, so it's less stable on rough terrain. In short, the Mojave Grom 4x4 BLX offers the best balance of scale, power, and durability for most buyers. The comparison becomes clearer when you look at upgrade potential: the BLX system can take a 3S LiPo later, while brushed rivals hit their ceiling quickly. That means the Mojave grows with your skill level—a factor that adds value beyond the initial purchase.

The table below breaks down the key differences: the Mojave Grom 4x4 BLX runs up to 40+ mph on 3S, while the brushed version tops out around 20 mph. The Latrax Teton reaches roughly 15 mph out of the box, and the Mini-B is similar. In terms of scale, the Mojave is 1/14, the Teton is 1/18, and the Mini-B is 1/16. Price-wise, the BLX sits above the brushed Mojave but below many 1/10-scale trucks. When you factor in the cost of upgrades, the BLX's included brushless motor saves you $60–$100 versus buying a separate brushless conversion. That makes the premium easier to justify, especially when you consider the longer lifespan of the drivetrain. For instance, a brushed-to-brushless conversion kit often costs more than the price jump between the two Mojave versions, and you still have to spend time installing it. With the BLX, you get the performance immediately, without opening the gearbox.

Keep Your Mojave Running Strong: A Simple Maintenance Plan

Regular maintenance is the difference between a truck that lasts years and one that fails after a few runs. The importance of keeping parts clean can't be overstated: cleaning guidelines for sensitive equipment stress that residue left on parts can quickly cause contamination and breakdowns. For an RC truck, that residue is dirt, sand, and grass clippings that pack into bearings and gears. If you ignore them, they act like sandpaper, wearing down moving surfaces and eventually seizing the drivetrain. A quick cleanup after every run—using a brush, compressed air, and a wipe-down—prevents that buildup. Check shock shafts and wheel hubs for debris, and do a monthly bearing check to catch problems early. This routine takes about ten minutes, but it's the cheapest insurance you can buy. For a beginner, it's easy to skip, but owners who stay consistent have far fewer repairs and longer run sessions. It's the habit that separates hobbyists from collectors of broken cars.

A simple cleaning routine after every run keeps the Mojave Grom in peak shape. Start with a dry wipe: a microfiber cloth removes surface dust from the chassis, shocks, and wheels. Then use compressed air or a soft brush to dislodge dirt from crevices and around the motor. Pay special attention to the wheel hexes and suspension arms where debris collects. For deeper cleans, remove the wheels for a separate wash, but keep electronics out of water. A damp cloth with a little soap handles stubborn grime, and you should let everything air-dry before the next run. Cleaning guidelines for heavily used equipment recommend daily attention—even if it's just a quick wipe-down—to prevent residue from building up into bigger problems. On a weekly basis, check screws, connectors, and bearing smoothness. This five-minute habit is the most effective form of protection, and it's the difference between a truck that runs for years and one that goes through parts quickly.

Following a regular schedule is easier than remembering to clean 'someday.' After every run, perform a two-minute blow-down and wipe-down. Every week, do a more thorough inspection: check the shock oil level, look for cracked screws, and re-tighten any loose nuts. Every month, remove the wheels and check the bearings for roughness; replace them if they grind. And every few months—or after a heavy crash—open the gearbox to inspect the gears and re-grease them. The reasoning mirrors what health organizations discovered when they formalized cleaning guidelines for reusable equipment: consistent, scheduled care is what prevents the rare but serious failures. In the RC world, the same principle means the small routine investments you make now are the ones that keep the truck running through a full season of bashing. A stock of spare bearings and screws costs little and saves you from waiting on shipping when something finally wears out.

Price vs. Value: Is the BLX Premium Justified?

At first glance, the Mojave Grom 4x4 BLX costs more than its brushed sibling, but the gap shrinks when you break down what you get. You're paying for a proven brushless motor and ESC, which alone cost $80–$120 as upgrades. You're also getting better tires, a stronger drivetrain, and a receiver that can handle 3S power. Add the cost of a spare parts tree and a second battery, and the BLX's total-start price is still lower than a 1/10-scale brushless truck. The real cost advantage appears over time: brushless motors don't need brush replacements, so maintenance costs stay lower. The initial premium is effectively an investment in longevity, and that's a trade worth making if you plan to drive regularly. If you buy the brushed version for $150, you'll likely want more speed within a month, and a brushless conversion will push your total investment above the BLX's price. Buying the BLX from the start avoids that double-spend.

The value of the Mojave Grom 4x4 BLX goes beyond raw speed. Its 1/14 scale makes it easy to transport, so you can throw it in the trunk and hit a park without needing a truck. The composite chassis and oil-filled shocks reduce the chance of expensive repairs, and the Arrma parts network means you can get a replacement for almost any component within days. Compared to a 1/10-scale model, you're saving $100–$200 upfront, and those savings can go toward a good charger and a spare battery. The BLX system's cooler operation also means you can run longer in warm weather without worrying about thermal shutdown. When you weigh the purchase against alternatives, the Mojave Grom 4x4 BLX delivers the best combination of performance and ownership cost for its class. For a parent buying for a child, the smaller scale is easier to control in a backyard, and the durability means fewer tears when it lands wrong.

Final Verdict: Who Should Buy the Mojave Grom 4x4?

Here's the bottom line: the Arrma Mojave Grom 4x4 223S BLX is the best first brushless truck for the vast majority of beginners. It combines a proven drivetrain, genuine hobby-grade parts support, and a price that stays reasonable even after you factor in a charger and batteries. The 223S BLX system is smooth, fast, and cool-running—qualities that reassure new drivers and keep the truck reliable. If you're coming from a toy-grade RC, this is a massive step up in both performance and serviceability. The small scale makes it approachable, but the engineering makes it a real platform that can take a beating and keep going. The only buyers who should look elsewhere are those who absolutely need 1/10-scale presence or who plan to race competitively; for everyone else, the Mojave Grom 4x4 BLX is the clear choice.

Use this decision rule when you're at the checkout: buy the Mojave Grom 4x4 BLX if you want a dependable, fast truck that's easy to maintain and upgrade. Choose a brushed model only if your budget is absolute and you're confident you won't want more speed soon. If you're a parent buying for a very young child (under 10), a brushed model may be safer, but for teens and adults, the BLX is worth the premium. Independent testing that buys products rather than taking free samples—the same approach used by top review labs—repeatedly shows that a well-built platform with good parts support costs less over the long run. That's why the BLX version gets the nod for most buyers. For those who still value the cheapest possible entry price, the brushed Mojave remains a decent choice, but you'll likely outgrow it within a season.

Choose the Mojave Grom 4x4 BLX—it's the best value in brushless trucks.