# ARRMA Big Rock 4X4 3S BLX (1/10 monster truck, ARA4312V3)

> What are the dimensions of the ARRMA Big Rock 4X4 3S BLX?

- Category: RC cars › Monster & bash trucks
- Kind: Modern device
- Basis: Secondary source: ARRMA (Horizon Hobby), Big Squid RC (copy of the maker's figures; the maker publishes none directly)
- Page: https://xemstudio.com/objects/arrma-big-rock-4x4-3s-blx/ · JSON: https://xemstudio.com/api/geometry?object=arrma-big-rock-4x4-3s-blx · Plain text: https://xemstudio.com/objects/arrma-big-rock-4x4-3s-blx/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 514 | 328 | 201 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- The Big Rock is ARRMA's 1/10 3S crew-cab monster truck. The file is a 514 × 328 × 201 mm envelope; the length comes from Big Squid RC's spec list because the ARRMA page lists 327 mm, which is the wheelbase.
- Wheel hex and track are not published on these pages.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

## Sizes

| dimension | value |
|---|---|
| Length | 514 mm (review spec list; the ARRMA page repeats the wheelbase value here) |
| Width | 12.91 in (328 mm) |
| Height | 201 mm |
| Wheelbase | 12.87 in (327 mm) |
| Ground clearance | 55 mm (review spec list) |
| Weight | 6.25 lb (2.84 kg) |
| Outer diameter (tire) | 5.12 in (130 mm) |
| Battery tray (blocks fitted) | 140 × 51 × 48 mm |
| Max battery (blocks removed) | 165 × 51 × 48 mm |
| Motor | BLX3660 3200 Kv |
| Servo | ADS-7M |

## Where the files are

- ARRMA (Horizon Hobby): [ARRMA 1/10 Big Rock 3S 4X4 RTR](https://www.arrma-rc.com/en/product/arrma-1-10-big-rock-3s-4x4-rtr-brushless-monster-truck-blue/ARA102723.html) — web — Publisher's page; dimensions are facts
- Big Squid RC: [ARRMA Big Rock Crew Cab 1/10 monster truck](https://www.bigsquidrc.com/arrma-big-rock-crew-cab-1-10-scale-monster-truck/) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/arrma-big-rock-4x4-3s-blx/index.json

- arrma-big-rock-4x4-3s-blx-envelope: [STEP](https://xemstudio.com/files/hardware/arrma-big-rock-4x4-3s-blx/arrma-big-rock-4x4-3s-blx-envelope.step) · [STL](https://xemstudio.com/files/hardware/arrma-big-rock-4x4-3s-blx/arrma-big-rock-4x4-3s-blx-envelope.stl) — Envelope 514 × 328 × 201 mm (Ready-to-run truck with body; length from a review spec list)

## Questions

**What battery fits the ARRMA Big Rock?**

Up to 165 × 51 × 48 mm with the blocks removed.

## Fits with

- [Traxxas Stampede 4X4 VXL (1/10 monster truck, 67086-4)](https://xemstudio.com/objects/traxxas-stampede-4x4-vxl/)
- [Traxxas Hoss 4X4 VXL (1/10 monster truck, 90076-4)](https://xemstudio.com/objects/traxxas-hoss-4x4-vxl/)
- [Traxxas Maxx 4S (1/10 monster truck, 89076-4)](https://xemstudio.com/objects/traxxas-maxx-4s/)
- [Traxxas X-Maxx 8S (1/5 monster truck, 77096-4 belted)](https://xemstudio.com/objects/traxxas-x-maxx-8s/)