Arrma Big Rock 3S BLX vs Traxxas Hoss 4X4 VXLWhich Should You Buy?

The noticeable price gap between the Arrma Big Rock 3S BLX at its price point and the Traxxas Hoss 4X4 VXL at its mid-range price is what this really comes down to. Both are 1/10 scale 4WD brushless monster trucks with 3S power systems, but the Hoss is a more premium truck in almost every measurable way.

Speed goes to the Hoss at 60 mph versus the Big Rock's 50 mph. That 10 mph difference is noticeable in real driving. The Hoss's power delivery feels more authoritative, and it pulls harder through the mid-range where you spend most of your time driving. Both trucks use brushless systems with 4WD, but the Hoss's Velineon motor and VXL-3s ESC are a step above the Big Rock's BLX electronics on refinement. Weight favors the Big Rock at 6.77 lbs compared to the Hoss's 7.87 lbs, giving it slightly snappier acceleration relative to its power level, though that advantage is more than offset by the Hoss's greater power output.

The Hoss is bigger where it counts. Its 21.65-inch length and 13.15-inch wheelbase provide a more stable platform than the Big Rock's 20.47 inches and 12.91-inch wheelbase. Width is very close at 14.37 inches for the Hoss and 14.57 for the Big Rock, which is actually one of the Big Rock's strengths relative to its price point. Ground clearance is where the Hoss truly pulls ahead: 2.85 inches versus 2.05 inches. That 0.8-inch advantage means the Hoss clears terrain features that would hang up the Big Rock. Roots, rocks, ruts, and tall grass are all less of an issue for the higher-riding Hoss.

Battery setup matters here. The Hoss is built for full-size 5000mAh 3S packs, giving it better runtime per session and the ability to take advantage of the most common and best-value battery size on the market. The Big Rock's stock battery spec is 3200mAh 3S, though it can accommodate larger packs with some creative fitting. If you already own 5000mAh 3S batteries, the Hoss makes better use of them out of the box. Both trucks are waterproof, so running conditions don't favor either platform.

Durability and build quality edge toward the Hoss. Traxxas used heavier-duty components throughout the drivetrain and suspension, which translates to fewer broken parts during aggressive bashing. The Hoss's shock absorbers offer better damping, and its chassis is stiffer under load. The Big Rock is solidly built for its price point, but it wasn't designed to take the same level of punishment as the Hoss. After months of hard driving, the repair bill on a Big Rock tends to run higher because lighter-duty parts break more often under stress. The Hoss absorbs that same stress without complaint.

Look, the Big Rock at its price point is an incredible truck for the money. It punches well above its weight class and gives new hobbyists a fantastic entry point into brushless 4WD bashing. The Hoss at its mid-range price is the truck you step up to when you want more speed, more clearance, and more durability. If your budget is firm at its price point-ish, the Big Rock won't disappoint. If you can stretch their budget, the Hoss is worth every additional dollar and you'll spend less on repairs long-term.