- Scale: 1/10
- Vehicle Type: Monster Truck
- Body Style: Crew Cab
- Drive Configuration: 4WD
- Motor Type: Brushless
- Motor Model: Spektrum FIRMA 3660
- Motor KV Rating: 3200KV
- Motor Pole Count: 4-pole
- Motor Shaft Size: 5mm
- Motor Output Spline: 23 tooth
- ESC Type: ARRMA BLX100
- ESC Current Rating: 100A continuous
- ESC Waterproofing: Waterproof and dust-proof design
- Battery Compatibility: 2S and 3S LiPo, 6 Cell NiMh, 7 Cell NiMh
- Battery Type: Hardcase LiPo only for 3S
- Battery Maximum Dimensions: 165 x 51 x 48mm
- Battery Recommended Discharge Rate: 35C minimum
- Battery Recommended Capacity: 5000mAh
- Top Speed: 50+ mph / 80+ km/h
- Radio System: Spektrum SLT3 2.4GHz
- Radio Channels: 3 channels
- Radio Protocol: SLT (Superb SLT response rate)
- Radio Features: 50% and 75% throttle limited switch, steering and throttle rate adjustments, throttle and steering reversing
- Radio Receiver Compatibility: TACTIC SLT receiver compatible
- Servo Type: Spektrum SPMS651 Digital
- Servo Torque: 7.27kg-cm / 101oz-in at 6V
- Servo Speed: 0.14 sec/60 degree at 6V
- Servo Spline: 23 tooth
- Servo Waterproofing: Waterproof (see manual for details)
- Servo Gear Material: All metal gears
- Servo Dimensions: 40 x 38 x 20mm
- Suspension Type: Oil-filled coil-over shocks with innovative absorber design
- Shock Oil Type: Silicone
- Shock Oil Viscosity: 500 cSt standard
- Suspension Features: Silicone O-rings for perfect sealing
- Turnbuckles: Tough steel with adjustable length
- Tyre Type: MT (Mud Terrain) 2.8 inch
- Tyre Model: dBoots Ragnarok MT
- Tyre Diameter: 130mm / 5.12 inch
- Tyre Insert Type: Medium
- Tyre Features: Vented design allows water to escape
- Wheel Hex Size: 14mm metal
- Wheel Bead Diameter: 71.5mm / 2.81 inch
- Wheels: Sealed to stop dirt getting in
- Chassis Material: Moulded composite
- Chassis Features: Wide stance for cornering stability, strengthened hinge pin plates retained by screws, built-in dirt deflectors, sealed wheels
- Body Material: Polycarbonate
- Body Length: 450mm / 17.72 inch
- Body Width: 160mm / 6.3 inch
- Body Height: 114mm / 4.49 inch
- Body Finish: Pre-painted matte black with ARRMA trim scheme
- Body Status: Pre-decaled and pre-trimmed
- Body Mounting: Pre-drilled mounting holes
- Vehicle Length: 514mm / 20.24 inch
- Vehicle Wheelbase: 327mm / 12.87 inch
- Vehicle Ride Height: 55mm / 2.17 inch
- Vehicle Front Width: 351mm / 13.82 inch
- Vehicle Rear Width: 356mm / 14.02 inch
- Vehicle Height: 201mm / 7.91 inch
- Vehicle Weight (no battery): 2.84kg / 6lbs 4oz
- Number of Differentials: 2
- Differential Type: Gear
- Differential Crown Gear: 37T Module 1.35m
- Differential Pinion Gear: 13T Module 1.35m
- Differential Oil Type: Silicone
- Differential Oil Viscosity: 10,000 cSt standard
- Internal Gear Ratio: 2.85
- Spur Gear: 57 tooth plastic
- Pinion Gear: 15 tooth metal
- Pinion and Spur Tooth Pitch: 0.8m
- Final Gear Ratio: 10.83
- Final Gear Ratio Range: 6.25 - 10.83
- Driveshaft Type: UJ Slider
- Torque Split: 50/50
- C-Hubs and Steering Blocks: Heavy duty construction
- Servo Saver: 23 tooth spline output with position marking detail
- Bumpers: Heavy duty impact-absorbing front and rear
- Wheelie Bar: Included and recommended for use
- Motor Heatsink: Fitted with cooling fan
- ESC Connector: IC5 (EC5 compatible)
- Motor Connectors: Gold 4mm bullet connectors
- Front Spring Rate: 1.00 N/mm
- Rear Spring Rate: 0.84 N/mm
- Hingepin: Captured hingepin design
- Locking Differentials: No
- Internal Gear Material: Plastic
- Spur Material: Plastic
- Pinion Material: Metal
- Power Level: 3S
- Build Status: RTR (Ready to Run)
- Build Configuration: Mid Motor
- Construction Type: Modular design for easy maintenance
- Electronics Module Design: Easy 5-screw module removal
- Differential Module Design: Easy 4-screw module removal
- Power Module Design: Easy 1-screw removal with sealed design
- Receiver Compartment: Waterproof design
- Transmission Design: Tougher brushless-ready transmission with same gears as ARRMA 4S
- Transmission Features: Metal input spline moulded into composite gear, fully adjustable sliding gear mesh, castellated slipper pad
- Slipper Clutch: Triple castellated pad with plastic locknut for precise settings
- Shock Towers: Proven tough composite construction
- Radio Wheel Grip: Foam steering wheel grip
- Radio Trigger Feel: Improved grip and trigger force with 2-way thumb switch 3rd channel
- Warranty: 2 Year Limited
- Tools Included: Multi tool and hex wrenches (2.0, 2.5mm)
- Maximum Motor Size: 3668
- Spur Pinion Specifications: Safe D-5 pinion with added security, special groove for E-Clip as part of Safe-D5 function
- Bearings: Rubber shielded for smooth and durable operation
- O-rings: Tough and durable silicone O-rings for smoother operation and better sealing
- Steering Design: Redesigned steering with extra room to allow stones and debris to fall out when bashing
- Gear Mesh: Fully adjustable for customisation and maintenance
- Dirt Protection: Large pull-tab on power module for improved sealing to reduce dirt ingress
Overview
The ARRMA Big Rock Crew Cab 4X4 3S BLX Finished Body in black is a premium replacement bodyshell designed for the ARRMA Big Rock Crew Cab 4X4 3S BLX monster truck. Whether you're a serious RC basher looking to refresh your machine's appearance or simply need to replace a damaged shell, this pre-painted and pre-decaled body offers authentic ARRMA styling with genuine durability. This is the perfect choice for anyone seeking a high-quality replacement body for their ready to run RC monster truck, combining aggressive monster truck styling with practical ease of installation.
Built from tough polycarbonate material, this finished body arrives completely trimmed, pre-painted with a striking matte black ARRMA trim scheme, and pre-decaled with all the iconic ARRMA badging and detailing. Unlike bodyshells that require extensive preparation, cutting, and customisation, this body is supplied ready to mount directly onto your vehicle. The pre-drilled mounting holes ensure a hassle-free fit, allowing you to get back to bashing within minutes of opening the box. For UK RC enthusiasts seeking a brushless 4WD monster truck body that combines durability with authentic looks, this finished shell represents exceptional value and convenience.
With its robust polycarbonate construction and realistic detailing, the Big Rock Crew Cab bodyshell is engineered to withstand the rigours of extreme off-road bashing. The matte black finish delivers a sleek, stealthy appearance that stands out on any terrain, whilst the aggressive crew cab styling and realistic monster truck proportions elevate the visual impact of your RC vehicle. This is an ideal replacement body for anyone who wants to maintain or upgrade their Big Rock Crew Cab 4X4 3S BLX without the complexity and cost of custom painting or body modification.
Key Features
- Pre-painted matte black finish with ARRMA trim scheme — This body arrives in a striking matte black colour with the iconic ARRMA badging and decals already applied, eliminating the need for painting, masking, or decal application and allowing you to fit the body and get straight out to the track or off-road terrain.
- Pre-decaled with authentic ARRMA styling — All official ARRMA graphics and trim schemes are factory-applied, giving your Big Rock Crew Cab the genuine competitive look whilst saving you hours of tedious decal work and ensuring professional-quality application.
- Pre-trimmed for fast, hassle-free installation — Unlike raw bodyshells that require careful cutting around windows, light buckets, and mounting points, this shell comes completely trimmed and ready to fit, with no complicated modifications needed to get your RC truck back on the trail.
- Pre-drilled body mounting holes — Factory-drilled mounting points ensure perfect alignment and secure fitting to your vehicle chassis, eliminating guesswork and ensuring your body is properly secured during aggressive bashing sessions.
- Tough polycarbonate construction — The durable polycarbonate material provides excellent impact resistance and longevity, standing up to the extreme stresses of bashing action whilst maintaining its appearance and structural integrity over extended use.
- Realistic crew cab styling and detailing — The Big Rock Crew Cab body features authentic monster truck proportions and aggressive detailing, including realistic cabin design and muscular body lines that deliver impressive visual presence on any terrain.
- Direct replacement for ARRMA Big Rock Crew Cab 4X4 3S BLX — This bodyshell is specifically engineered for the Big Rock Crew Cab 4X4 3S BLX platform, ensuring perfect fitment and compatibility with your existing chassis and running gear without any modifications or adaptation required.
Technical Performance
The ARRMA Big Rock Crew Cab 4X4 3S BLX platform combines exceptional engineering with proven performance credentials. At the heart of the system sits the Spektrum FIRMA 3660 brushless motor with a 3200KV rating, delivering smooth, consistent power with a 4-pole construction design. The motor is 3S LiPo ready, capable of operating on both 2S and 3S LiPo batteries, and features gold 4mm bullet connectors for reliable, efficient connection to the ARRMA BLX100 waterproof ESC. The ESC itself is rated at 100A continuous discharge, supports both 2S and 3S LiPo compatibility, and incorporates waterproof and dust-proof design with an integrated cooling fan for heat management during extreme running. The transmission utilises a tougher brushless-ready design with the same gears as the ARRMA 4S platform, featuring Module 1.35 37T/13T differential gears with internal metal gears and a 57-tooth spur with 15-tooth metal pinion, resulting in a final gear ratio of 10.83 and delivering achievable speeds of 80+ km/h (50+ mph) in optimum driving conditions on 3S LiPo. The chassis is constructed from moulded composite material with a wide stance providing increased cornering stability, strengthened hinge pin plates retained by screws, sealed wheels to prevent dirt ingress, and fully adjustable sliding gear mesh for maintenance flexibility. The suspension features oil-filled coil-over shocks with innovative absorber design and silicone O-rings for perfect sealing, adjustable length tough steel turnbuckles, and a heavy-duty wheelie bar for stability during aggressive acceleration. Dimensions include a 514mm length, 327mm wheelbase, 55mm ride height, 351mm front width, 356mm rear width, and 201mm height, with a dry weight of 2.84kg. The vehicle accommodates 2S or 3S Lipo hardcase batteries within 165 x 51 x 48mm dimensions and carries a 2-year limited warranty.
What's in the Box
- 1 x BIG ROCK CREW CAB 4X4 3S BLX painted, decaled and trimmed bodyshell in black
What You Need to Complete
- ARRMA Big Rock Crew Cab 4X4 3S BLX rolling chassis, electronics and drivetrain (if purchasing as a replacement body only)
Frequently Asked Questions
- Is this a complete ready to run RC monster truck? — No, this is a replacement bodyshell only. You will need an existing ARRMA Big Rock Crew Cab 4X4 3S BLX chassis to attach this body to. If you require a complete ready to run monster truck, you should purchase the full Big Rock Crew Cab 4X4 3S BLX vehicle kit.
- What material is this body made from? — This bodyshell is manufactured from durable polycarbonate, a tough material commonly used in high-performance RC bodies because it provides excellent impact resistance whilst remaining lightweight, making it ideal for extreme bashing action and off-road driving.
- Do I need to paint or decal this body myself? — No, this is a fully finished body. It arrives pre-painted in matte black with the complete ARRMA trim scheme and graphics already applied. You simply need to trim any excess material if required, then mount it directly onto your chassis using the pre-drilled mounting holes.
- Will this body fit my Big Rock Crew Cab 4X4 3S BLX? — Yes, this bodyshell is specifically designed as a direct replacement for the ARRMA Big Rock Crew Cab 4X4 3S BLX. The body dimensions are 450mm length, 160mm width, and 114mm height, and it comes pre-drilled with mounting holes that align perfectly with your vehicle's chassis.
- What is the wheelbase of this body? — The body is designed for the Big Rock Crew Cab platform which features a 327mm wheelbase. This bodyshell will fit perfectly on your existing chassis.
- Can I use this body on other ARRMA models? — This bodyshell is specifically engineered for the Big Rock Crew Cab 4X4 3S BLX platform. Whilst other ARRMA monster trucks may have similar dimensions, fitment on alternative platforms is not guaranteed, and you should verify compatibility with the original product manual before attempting to fit this body to a different vehicle.
- How durable is polycarbonate compared to other body materials? — Polycarbonate is an excellent choice for RC bodies because it offers superior impact resistance compared to many alternative materials, whilst remaining relatively lightweight. It can withstand significant bashing action and impacts without cracking or breaking, making it ideal for aggressive off-road driving and challenging terrain.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the ARRMA Big Rock Crew Cab 4X4 3S BLX Finished Body (Black) Z-ARA402317 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
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- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
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