The ARRMA LIMITLESS 120 8S BLX is a high-performance 1/7 scale 4WD street speed machine designed for extreme high-speed RC driving. Capable of speeds of 120+ mph / 192+ km/h when equipped with the optional speed gearing and appropriate 8S LiPo power, the LIMITLESS combines a low-drag aerodynamic body, powerful Spektrum brushless electronics and a purpose-built high-speed chassis.

Designed for experienced RC drivers, the LIMITLESS features a mid-motor 4WD layout, adjustable aerodynamic package, metal drivetrain components, big-bore oil-filled shocks and high-grip dBoots Hoons tyres. The result is a stable, powerful platform designed specifically for high-speed all-road performance.

120+ MPH Speed Capability

The LIMITLESS 120 is engineered for extreme speed. Its aerodynamic body and low-drag aero package help reduce resistance while providing additional stability at high speeds.

An optional speed pinion is included, allowing the vehicle to be geared for its maximum advertised speed potential when used with suitable batteries, surface conditions and setup.

The standard drivetrain uses a 21-tooth metal pinion and 46-tooth metal spur gear, with the optional speed gearing providing additional top-speed potential.

Spektrum 8S Brushless Power

The LIMITLESS is equipped with a Spektrum FIRMA 4685 1450Kv brushless motor and Spektrum FIRMA 160A V2 Smart waterproof ESC.

The system supports 6S or 8S LiPo batteries, with 8S providing the power required for the vehicle's maximum speed capability.

The ESC features Spektrum Smart technology and an IC5 connector, providing compatibility with suitable Spektrum Smart batteries and equipment.

A large dual-fan motor cooling system helps manage temperatures during high-power operation.

4WD Mid-Motor Chassis

The LIMITLESS uses a mid-motor 4WD configuration with a 50/50 torque split. This layout helps provide balanced handling and traction during high-speed acceleration.

The drivetrain uses durable metal gears, a 1.0 MOD gear pitch, metal differentials and heavy-duty CVD front and dogbone rear driveshafts.

The vehicle features two gear differentials and a 6.13 standard final gear ratio.

Low-Drag Aerodynamic Package

The LIMITLESS includes a tunable aerodynamic package designed specifically for high-speed running.

The factory-finished body is trimmed and ready to install, while the aerodynamic components help manage airflow and provide stability at speed.

A front splitter provides additional support and protection for the aero package.

The body measures approximately 526 mm long and 274 mm wide.

dBoots Hoons All-Road Tyres

The LIMITLESS comes fitted with dBoots Hoons all-road tyres mounted to lightweight speed wheels.

The tyres have an approximately 100 mm diameter and are designed to provide suitable grip for high-speed all-road driving.

The vehicle uses 17 mm wheel hexes.

Spektrum AVC Stability Control

The included Spektrum DX3 3-channel DSMR transmitter and SR6200A DSMR AVC receiver provide Active Vehicle Control technology.

AVC can help maintain stability and traction during high-speed driving, particularly when conditions are less than perfect.

AVC gain can be adjusted from the transmitter, allowing the driver to select the desired level of electronic assistance.

Heavy-Duty Suspension

The LIMITLESS features large-bore oil-filled shocks with 4 mm diameter shock shafts for increased durability.

Standard shock oil is 2,000 cSt silicone oil, while the factory differential setup uses:

• Front: 80,000 cSt
• Centre: 100,000 cSt
• Rear: 80,000 cSt

The suspension uses 6.6 N/mm front and rear spring rates.

Key Features

• 1/7 scale ARRMA LIMITLESS 120 8S BLX
• 4WD high-speed street machine
• 120+ mph / 192+ km/h speed capability
• Ready-to-Run configuration
• Spektrum FIRMA 4685 1450Kv brushless motor
• Spektrum FIRMA 160A V2 Smart waterproof ESC
• 6S and 8S LiPo compatible
• Spektrum DX3 3-channel DSMR transmitter
• Spektrum SR6200A DSMR receiver with AVC
• Mid-motor chassis layout
• 50/50 torque split
• Tunable low-drag aerodynamic package
• Front splitter
• dBoots Hoons all-road tyres
• Metal internal gears
• Metal differentials
• 1.0 MOD drivetrain
• Big-bore oil-filled shocks
• 4 mm shock shafts
• 17 mm wheel hexes
• Optional speed pinion included
• Large 180 × 55 × 70 mm battery trays
• 3 mm 6061-T6 aluminium chassis
• Factory-finished, trimmed body

Specifications

• Brand: ARRMA
• Model: LIMITLESS 120 8S BLX
• Part Number: ARA7816
• Scale: 1/7
• Vehicle Type: Street Speed / Speed Machine
• Drive: 4WD
• Power: Electric Brushless
• Motor: Spektrum FIRMA 4685 1450Kv
• ESC: Spektrum FIRMA 160A V2 Smart Waterproof
• Radio: Spektrum DX3 3-Channel DSMR
• Receiver: Spektrum SR6200A DSMR AVC
• Power System: 8S
• Battery Compatibility: 6S or 8S LiPo
• Maximum Battery Size: 180 × 55 × 70 mm
• Drivetrain: Mid Motor
• Torque Split: 50/50
• Differentials: 2 Gear Differentials
• Internal Gear Ratio: 2.8
• Final Gear Ratio: 6.13
• Spur Gear: 46T Metal
• Standard Pinion: 21T Metal
• Speed Pinion: Included
• Gear Pitch: 1.0 MOD
• Chassis: 3 mm 6061-T6 Aluminium
• Tyres: dBoots Hoons
• Tyre Diameter: 100 mm
• Wheel Hex: 17 mm
• Shock Type: Big-Bore Oil-Filled
• Shock Oil: 2,000 cSt Silicone
• Differential Oil: 80K Front / 100K Centre / 80K Rear
• Length: 730 mm
• Width: 312 mm rear
• Front Width: 310 mm
• Height: 165 mm
• Wheelbase: 406 mm
• Ride Height: 15 mm
• Weight: Approximately 5.28 kg without battery
• Maximum Speed: 120+ mph / 192+ km/h
• Surface: All-Road
• Build Status: RTR

Battery & Charger Required

The ARRMA LIMITLESS is supplied Ready-to-Run but batteries and charger are sold separately.

For operation you will require:

• 1 × 6S LiPo battery, or
• 1 × 8S LiPo battery
• Compatible LiPo charger
• LiPo charging bag
• Suitable battery connector/adapter if required

Only use hardcase LiPo batteries within the manufacturer's maximum battery dimensions of 180 × 55 × 70 mm.

For maximum-speed operation, use batteries capable of safely delivering the high current demanded by the 8S brushless system.

What's Included

• ARRMA LIMITLESS 120 8S BLX 4WD RTR Speed Machine
• Spektrum FIRMA 4685 1450Kv Brushless Motor
• Spektrum FIRMA 160A V2 Smart Waterproof ESC
• Spektrum SR6200A DSMR AVC Receiver
• Spektrum DX3 3-Channel DSMR Transmitter
• Spektrum S665 Waterproof Metal Gear Digital Steering Servo
• dBoots Hoons All-Road Tyres
• ARRMA heatsink and dual cooling fans
• Optional speed pinion
• Multi-tool
• 2.0 mm and 2.5 mm hex wrenches
• 4 × AA transmitter batteries
• Instruction manual

Important High-Speed Safety Information

The ARRMA LIMITLESS is designed for extreme high-speed driving and is intended for experienced RC users.

At speeds approaching 120+ mph / 192+ km/h, the vehicle requires a very large, smooth and unobstructed running area. Always check the condition of tyres, wheels, drivetrain, steering and electronics before high-speed operation.

Never operate the LIMITLESS near people, vehicles, buildings, roads or other hazards. Always use appropriate LiPo batteries and follow the manufacturer's battery charging and operating instructions.

The ARRMA LIMITLESS 120 is an excellent choice for experienced RC enthusiasts looking for an extreme-speed 1/7 scale platform with 8S brushless power, 4WD traction, AVC stability control and a purpose-built aerodynamic design.