Arrma · Updated July 2026
Arrma Big Rock 4X4 3S BLX: price & specs
The Arrma Big Rock 4X4 3S BLX costs $349.99, #4 cheapest of 8 rc cars (median $350). It earns a Silver Deskmark — 76/100 pay-blind standing, #2 of 4 in class.
Verified Jul 11, 2026 · figures linked to their source in the table below
Arrma Big Rock 4X4 3S BLX. Every price and spec below is linked to its source and dated — no guesses.
Source: arrma-rc.com verified ✓ corroborated verify in ledger
Is the Arrma Big Rock 4X4 3S BLX a good buy?
At $350, the Arrma Big Rock 4X4 3S BLX is #4 cheapest of the 8 rc cars we track, where the median is $350. On the spec sheet, its drive type of 4WD is the highest of the 9, its length inches of 20.24 is below the median of the 7, and its top speed mph of 50 is at the median of the 4.
Specifications
| Price (US) | $349.99 AMain Hobbies product page for ARA4312V3 lists "Price: $349.99". The manufacturer (arrma-rc.com) page for this exact SKU is marked "Discontinued / This Item is No Longer Available" and shows no price. |
|---|---|
| Brand | Arrma |
| Released | — |
| Scale | 1/10 |
| Vehicle type | monster-truck |
| Drive type | 4WD |
| Motor type | brushless |
| Top speed mph | 50 |
| Motor kv | 3200 |
| Ready to run | Yes |
| Waterproof electronics | Yes |
| Battery included | No |
| Length inches | 20.24 |
| Weight grams | 2835 |
Source: arrma-rc.com (verified 2026-07-11) · corroborated by amainhobbies.com. The ARRMA manufacturer page (SKU ARA4312V3, "BIG ROCK 4X4 3S BLX" 1/10 Crew Cab Monster Truck) confirmed exact model identity and stated the specs verbatim: Scale 1/10, Drivetrain 4WD, Motor Type Brushless, Spektrum Firma 3660 3200Kv brushless motor, Top Speed 50+, Ready-To-Run, waterproof ESC/receiver/servo, Battery sold separately, Product Length 20.24"; however it is flagged Discontinued with no price. The AMain Hobbies retailer page for the same SKU ARA4312V3 supplied the price ("Price: $349.99"), the ready-to-run weight verbatim ("Product Weight: 6.25lbs (2835g)"), and reconfirmed the 1/10 scale, 4WD, brushless 3200Kv motor, waterproof electronics, and 20.24" length. No release date is stated on either fetched page, so releaseDate is left null rather than inferred.
Is the Arrma Big Rock 4X4 3S BLX worth it vs cheaper rc cars?
Arrma Big Rock 4X4 3S BLX against its closest cheaper and pricier rc cars on the specs that matter — every value sourced. See all 8 ranked →
| Product | Price | Scale | Vehicle type | Drive type | Motor type | Top speed mph |
|---|---|---|---|---|---|---|
| Arrma Big Rock 4X4 3S BLX this | $349.99 | 1/10 | monster-truck | 4WD | brushless | 50 |
| Arrma Granite 4X4 3S BLX | $339.99 | 1/10 | monster-truck | 4WD | brushless | 50 |
| Tamiya Grand Hauler | $361.9 | 1/14 | on-road | 2WD | brushed | — |
Frequently asked questions
How much does the Arrma Big Rock 4X4 3S BLX cost?
The Arrma Big Rock 4X4 3S BLX has a US price of $349.99 (AMain Hobbies product page for ARA4312V3 lists "Price: $349.99". The manufacturer (arrma-rc.com) page for this exact SKU is marked "Discontinued / This Item is No Longer Available" and shows no price.), as of 2026-07-11.
How does the Arrma Big Rock 4X4 3S BLX compare on price?
At $350, the Arrma Big Rock 4X4 3S BLX is #4 cheapest of the 8 rc cars we track, where the median is $350.
What are the Arrma Big Rock 4X4 3S BLX's key specs?
Arrma Big Rock 4X4 3S BLX (Arrma): scale 1/10, vehicleType monster-truck, driveType 4WD, motorType brushless, topSpeedMph 50. Full sourced spec sheet verified 2026-07-11.
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