Arrma Outcast 8S

Arrma Outcast 8S

Brand: Arrma

Part Number: ARA5810B

£1,129.00 Web Price RRP £1,274.99

In stock: Usually ships same day

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LiPo batteries are the latest craze to hit the RC scene and provide approximately 20% more runtime and power than comparable NiCd/NiMh batteries.

1 x HPI Plazma 1.5V Alkaline AA Battery (4Pcs) #HPI-101939
1 x Voltz LiPo Charge Sack Bag - Medium 22cm x 18cm #VZ1001
1 x EC5 Super Duty Charge Lead With 4mm Plugs #O-LGL-CLEC5
2 x Voltz 5000mAh Hard Case 14.8v 4S 50C LiPo - EC5 #VZ0350EC5
1 x eTronix Powerpal 3.0 AC/DC Performance Charger/Discharger - 80W 10A #ET0202

saving you £167.23 over RRP!

Spektrum SMART LiPo batteries have clever technology built in making charging and looking after your packs easier than ever before!

1 x HPI Plazma 1.5V Alkaline AA Battery (4Pcs) #HPI-101939
1 x Voltz LiPo Charge Sack Bag - Medium 22cm x 18cm #VZ1001
2 x Spektrum SMART G2 Hard Case LiPo Battery - 14.8V 5000mAh 4S 100C - IC5 #SPMX54S100H5
1 x Spektrum S2100 G2 2x100W AC Smart Charger #SPMXC2000I

saving you £196.47 over RRP!

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      General Features
    • ARRMA®-tough design
    • ARRMA® modular platform with many "custom-build" options
    • Adjustable battery boxes with hook and loop straps
    • Chassis brace options including tower-to-tower
    • Reverse bell crank steering system
    • Heavy-duty double spring servo saver
    • Hex hardware throughout
    • Versatile chassis accepts motors up to 56110 size and 1/6 or 1/5 size servos
    • 2-year limited warranty (see website for details)


  • Spektrum™ DX3™ 2.4GHz Radio with SRS6110AT AVC® Receiver
  • Spektrum™ Firma™ 160A Smart ESC
  • Spektrum™ Firma™ 1250Kv Brushless Motor
  • Spektrum™ S905 Metal-Geared Digital Servo
  • 4-Wheel shaft drive
  • 8S Power (two 4S batteries, not included)
  • Anti-roll bars (optional, not included)
  • Adjustable camber
  • Adjustable front toe
  • Rear adjustable camber link positions
  • Adjustable ride height
  • Adjustable droop
  • 20 million cSt oil in center differential
  • CVD driveshafts
  • All-terrain dBoots® BACKFLIP tires
  • Massive 20mm bore oil-filled adjustable shocks
  • Wheelie bar with rubber tires for maximum stunting
  • High downforce wing fitted with special wear screws to protect the wing when upside down
    • Extra-rigid, laser-etched anodized aluminum chassis
    • Multi-structured center brace system
    • Rear lower chassis brace
    • Strong composite chassis side pods
    • Under-chassis skids
    • Metal inserts molded into the front steering knuckles
    • Metal wishbone covers to prevent the pivot ball from pulling out of the arms
    • Extra-thick molded composite front and rear shock towers
    • Heavy-duty drivetrain
    • Durable steel driveshafts
    • All-metal diff outdrives and gearbox internals
    • Spiral-cut crown/pinion gears
    • Metal differential gears
    • Metal spur/idler gear
    • Aluminum sliding motor mount
    • Heavy-duty dual spring servo saver
    • Waterproof* receiver box
    • Electronic ESC power switch
    • Captured hinge pins
    • Aluminum hanger inserts
    • Center protection tower that interfaces with the roll cage for increased body durability
    • Body clip protection pads on top of body
    • Single piece wing mount
    • Heavy-duty front bumper
    • Metal 24mm hex inserts in wheels


    Easy Maintenance
  • Easy access to front and rear differentials (5 screws)
  • Easy-to-remove Power Module (5 screws)
  • Sliding motor mount for easy motor removal (3 screws)
  • Easy-to-remove chassis braces (1 clip with retainer)
  • Easy-to-remove front, rear and center modules
  • Easy-access waterproof* electronics module


Driven by 8S brushless power and an ARRMA®-tough design, the OUTCAST™ 8S BLX 4WD delivers the torque, acceleration and speed you need for extreme action in 1/5 scale. This ready-to-run stunt truck comes equipped to defy gravity right out of the box. From the heavy-duty front bumper to the wheelie bar in back, it's engineered to do it all: long, tall wheelies; tight, fast donuts; standing and aerial backflips; high leaps into the air; and more — over all terrain, in all conditions.

Just add your choice of batteries and charger and go. The OUTCAST™ 1/5 8S BLX 4WD includes a Spektrum™ DX3™ Smart transmitter and SRS6110AT AVC® (Active Vehicle Control®) receiver that take full advantage of the Spektrum™ Smart Firma™ brushless motor and ESC's innovative telemetry capabilities. Download the free Spektrum™ Dashboard App to your mobile device and follow motor RPM, ESC temperature, receiver voltage, drive pack voltage and more data in real-time. Dial-in extra stability with the radio's AVC® system to carve corners and nail jumps without letting up on the throttle.

Bigger than big and engineered for brute power and toughness, the ARRMA® 1/5 scale OUTCAST™ 8S BLX 4WD Stunt Truck features a metal-reinforced design that lets you blast up, over and through bruising obstacles. Metal shafts, turnbuckles and outdrives, plus all-metal internal gears, give the drivetrain and suspension system unstoppable strength. Even the included Spektrum™ S905 digital servo boasts the strength of metal gears.

The extra-rigid, laser-etched, anodized aluminum chassis plate has a multi-structured center brace system, rear lower chassis brace and strong composite chassis side pods for the durability to support extreme stunts. Extra-thick molded composite front and rear shock towers hold massive 20mm bore, oil-filled adjustable shocks to soak-up bumps and jolts.

ARRMA® keeps your maintenance time to the minimum with an efficient, driver-friendly design. A sliding, 3-bolt aluminum mount provides fast motor access. The vehicle's front, rear and center modules and waterproof electronics module are also engineered for quick and easy access, removal and maintenance.

The ultra-tough OUTCAST™ 1/5 8S truck body arrives factory trimmed, painted and decaled. A center protection tower on the chassis interfaces with the roll cage for increased body durability. Its tough stunt truck wheels come outfitted with metal 24mm hex inserts and multi-terrain dBoots® BACKFLIP tires that provide all the traction you'll need to flip, grip, wheelie and spin. A high downforce wing helps keep the vehicle grounded — and a wheelie bar is there for when only 90 degree wheelies will do!



For when only 90 degree wheelies will do



Responsive stunt performance



For easy meshing and quick removal



Stylish looks and functional impact protection



The stiff roll-cage offers protection against high speed roof-time



Interfaces with roll-cage for enhanced body durability











Center diff filled with 20 million cSt oil


'Safe-D8' PINION

Safe and Secure Safe-D8 design secures pinion to the motor in three ways:

  • 1. Set Screw
  • 2. D-Shaped hole
  • 3. E-clip



ARRMA shock size comparison: 6S shock (left), 8S shock (right)



Accommodates a wide range of battery sizes




  • Length: 140mm-170mm
  • Maximum Battery Dimensions: 6.69 x 2.16 x 2.08 in. (170 x 55 x 53mm)



ARRMA diff size comparison: 6S diff (left), 8S diff (right)



8S ARRMA tough




  • Full-size 1/5th scale servo
  • Strong, metal gears used throughout
  • Waterproof and dustproof case
  • 15 tooth output spline
  • Torque: 38kg-cm @6V
  • Speed: 0.20sec/60degree @6V
  • Dimensions: 2.36 x 1.14 x 2.17" (60 x 55 x 29mm)




  • Waterproof and dustproof design
  • 160A, 8S LiPo ready (3S*, 4S*, 6S* and 8S LiPo compatible)
  • Spektrum® SMART Technology
  • Fitted with reliable IC5™ connectors (EC5™ compatible)
  • Integrated fan for reduced heat during extreme running
  • High quality 10awg wires
  • Low voltage cut off and thermal overload protection
  • User programmable punch, brake, BEC, LVC sensitivity, reverse speed and motor timing settings




  • 1250Kv 4685 size 8S brushless motor
  • Beautifully etched aluminum can
  • 4-pole construction for smooth and consistent power
  • 6.5mm gold bullet connectors for reliable and efficient connection
  • Black anodized aluminum motor can for increased heat dissipation
  • Super strong 8mm shaft
  • Groove at the end of the motor shaft allows the installation of a pinion retaining E-Clip




  • Ergonomic steering wheel for precise control
  • On-the-fly adjustable AVC® gain for personalized handling
  • Lightweight and ergonomic design for long bashing
  • 2 channel radio system
  • 2.4GHz technology built around DSMR technology
  • Full-range telemetry capabilities



Arrma Outcast 8S Specfications:

  • Ball Bearings: Full Set, Rubber Shielded
  • Chassis: 0.6 in (4mm) 6061-T6 Aluminum Plate
  • Completion Level: Ready-To-Run
  • Drivetrain: 4WD
  • Drive Type: Forward/Brake/Reverse
  • Front Shock Spring Rate: 2.21N/mm
  • Product Height: 12" (305 mm)
  • Top Speed: 55+
  • Wheel Hex Size: 24mm
  • Servos: Included
  • Battery Tray Dimensions: 6.69 x 2.16 x 2.09 in (170 x 55 x 53mm)
  • Front Track: 23.46 in (596mm)
  • Power System: 8S
  • Product Width: 23.46" (596 mm)
  • Radio: Included
  • Technology: AVC and SMART
  • Vehicle Type: Stunt Truck
  • Water-Resistant: Yes
  • Approximate Assembly Time: No Assembly Required
  • Body: Painted,decaled and trimmed
  • Brakes: Integral with ESC
  • Pinion: 23T
  • Scale: 1/5
  • Gear Pitch: 1.0 Module
  • Power Type: Electric
  • Final Drive Ratio: 22.41:1
  • Motor Type: Brushless
  • Rear Track: 23.46 in (596mm)
  • Speed Control: Included
  • Wheelbase: 16.92 in (430mm)
  • Product Weight: 24lbs (11kg)
  • Bushing Material: Metal
  • Charger: Sold Separately
  • Differential: Gear type
  • Rear Shock Spring Rate: 2.21N/mm
  • Battery: Sold Separately
  • Connector Type: IC5,EC5
  • Gear Ratio: 22.41:1
  • Ground Clearance: 2.56 in (65mm)
  • Internal Gear Ratio: 9.07:1
  • Motor Size: 4685-1250Kv Sensorless
  • Product Length: 28.11" (714 mm)
  • Steering Type: 2WS
  • Suspension: Independent
  • Tire Type: Multi-surface
  • Wheel Width: 3.54 in (90mm)
  • Tire Tread: dBoots Backflip
  • Receiver: Included
  • Shock Type: Oil-filled, coil over adjustable
  • Wheel Type: MT 4.88in

In The Box

  • (1) OUTCAST 1/5 8S BLX 4WD Stunt Truck RTR
  • (1) Spektrum Firma 1250Kv Brushless Motor
  • (1) Firma 160A Brushless Smart ESC
  • (1) Spektrum S905 Metal-Geared Digital Servo
  • (1) Spektrum DX3 2.4GHz Radio with SR6100AT AVC Receiver

Needed to Complete

  • (2) 3S or (2) 4S LiPo Batteries with EC5™ or IC5™ connector
  • (1) Compatible Battery Charger
  • (4) AA batteries for Transmitter

Need Help

  • Product Support Information - Start Here
  • Product & Sales - Contact Us
  • Brand: Arrma
  • Part No: ARA5810B
  • Barcode: 5052127043878
  • Scale: 1:5
  • Build Level: Assembled (RTR)
  • Power Source: Electric - Brushless
  • Vehicle Type: Monster Truck
  • Surface Type: Off Road
  • Fitment: Standard Part

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No product reviews yet!

hi was wandering how long roughly can run before needs a charge n how long does take to charge. many thanks
Asked by Richard on 21st August 2020

That depends on your battery and charger setup, but on 5000mah batteries I'd expect to see around 25 mins runtime. 

A decent charger would charge those in around 45-60 mins

Answered by: Ben @ Wheelspin Models

Does that come with a remote?
Asked by Alex Newman on 16th January 2021

Yes it does

Answered by: Ben @ Wheelspin Models

Is there a booklet or information for the controls of the rc car
Asked by Kamryn O’brien on 23rd April 2021

Yes you get a manual in the box 

Answered by: Anthony @ Wheelspin Models

Is this car faster than the notorious
Asked by Kamryn O’brien on 16th May 2021

Than the notorious 6S? These are bigger and heavier, but do run higher voltage batteries. Arrma quote 55+ mph top speed on these, and 60+ mph on the smaller Notorious 6S - so not much in it

Answered by: Ben @ Wheelspin Models

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