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Losi 1/10 Lasernut U4 4WD Brushless RTR with Smart ESC, Black (Losi 03028T2 | LOS03028T2)

Model: Losi 03028T2
Dist. #: LOS03028T2   SKU: LOS03028T2

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List Price:  $609.99
Price:  $539.99
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Updated on Sep 18, 2025 09:27:57 PM

1/10 Lasernut U4 4WD Brushless RTR with Smart ESC, Black...


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Features

10 4WD Platform

Spektrum™ 130A Brushless SMART ESC and 4-Pole 1900kv 550 Motor

Spektrum DX3™ 2.4GHz radio system with AVC® and optional telemetry

Waterproof Parts

12mm race influenced threaded aluminum bodied shock absorbers and shock caps

Officially-licensed Lasernut Racing Scale Body & Cage

Officially-licensed BFGoodrich® Mud-Terrain T/A® KM3 Tires

Officially-licensed Raceline 2.2 Wheels

Sway bars

3 Oil Filled Equipment Differentials





Overview
The 10 4WD platform is acknowledged all over the world as the personification of strength and resilience. The Losi® Lasernut U4 1/10-scale 4WD Rock Racer (RR) RTR with Spektrum™ Smart develops on the 10 style and includes items rock racers require such as aluminum shocks, sway bars and adjustable turnbuckles. Plus, it consists of a complete metric hardware bundle for around the world compatibility. The Lasernut is currently the only complete Unlimited U4 FIS (Full Independent Suspension) racer on the market featuring all the technological advances drivers require including the Spektrum Smart 130A Brushless ESC and Spektrum 4-Pole 1900kv 550 motor supplying greater efficiency enhancing run times with increased power. Obviously, the ESC is water resistant, totally programmable and comes pre-wired with a high-current IC5™ connector. Motorists stay in control with a DX3™ transmitter, a Spektrum AVC® receiver with steering concern, and an officially-licensed Lasernut race-inspired scale U4RC body/roll cage with two various graphics and color variations. Interacting with BFGoodrich Tires, the Lasernut U4 has actually scaled down KM3 tires that have an aggressive tread pattern capable of managing any surface. The Losi Lasernut Rock Racer is the ultimate U4 racer with scale looks, ridiculous speeds and efficiency, and Spektrum Smart Technology.





Needed to Total

THREE or FOUR Hardcase LiPo Battery with IC5/EC5 Connector

3S/4S Compatible LiPo Charger

Protective LiPo Storage/Charging Case

What remains in the Box?

(1) Lasernut U4 4WD Brushless RTR Automobile with:

(1) Spektrum™ Firma 130A Brushless SMART ESC (installed)

(1) Spektrum™ 4-Pole 1900kv 550 Motor (installed)

(1) Spektrum™ SR6100AT Receiver with AVC

(1) Spektrum DX3™ 2.4GHz Radio Transitter

(1) Product Handbook







 



Legendary 10 Platform

Legendary TEN Platform
The legendary, high-performance 10 platform includes a super-tough aluminum chassis and the capability to change the Lasernut U4 independent suspension and drivetrain for any condition.
 

Spektrum SMART ESC

Spektrum SMART ESC
The ESC is water resistant, totally programmable and comes pre-wired with a high-current IC5 connector. The ESC will work with most sensorless brushless motors and is 3S-4S Li-Po suitable.
 





Formally Accredited Scale Body and Roll Cage

Officially Accredited Scale Body and Roll Cage

Officially Licensed Scale Body and Roll Cage
A Lasernut Licensed race influenced scale U4RC body/roll cage with exciting graphics provided in two various color variations with a flip up cage for easy access to the battery.





Formally Accredited Wheels and Tires

Officially Licensed Wheels and Tires
The consisted of scale licensed Raceline 2.2 racing wheels and BFGoodrich KM3 tires feature an aggressive tread pattern that handles any surface and great appearances while out on any course.
 

Waterproof Electronics

Waterproof Electronics
The Lasernut U4 is filled with water resistant electronic devices including the receiver, servo and ESC. Whatever is sealed versus the components permitting you to sprinkle in the rain, spin in the mud and make tracks in the snow. It's full-throttle liberty to run anytime, rain or shine
 





Coil-Over Oil Filled Shocks with Pre-Load Adjustment

Coil-Over Oil Filled Shocks with Pre-Load Adjustment
Adjustable oil filled coil-over shocks on all 4 corners take in the gnarliest surface. The aluminum threaded 12mm shocks are fully-adjustable and enable you to tune the handling of the Lasernut U4 to maximize efficiency and control anywhere.
 

Aluminum Chassis

Aluminum Chassis
The foundation of the Lasernut U4 includes a 3mm, anodized aluminum chassis plate with a 4mm upper deck. Whether you are hitting the rocks, getting huge air, or just broad open, the 3mm chassis just keeps requesting for more!
 





LED Light Bar and Pod Lights

LED Light Bar and Pod Lights
The enjoyable does not stop even when the sun goes down with the Lasernut U4. A brilliant LED lights on the integrated light bar cast more than enough lighting for running at night. The pod lights are amber.
 

Adjustable Turnbuckles

Adjustable Turnbuckles
For included adjustability and tune-ability, adjustable turnbuckles come standard on the Lasernut U4.
 





Adjustable Sway Bars

Adjustable Sway Bars
The consisted of sway bars are fully adjustable and assist you press the Lasernut U4 to its limits.
 

Adjustable Shock Towers

Adjustable Shock Towers
4mm 6061-T6 Aluminum shock towers are developed hard to endure the punishment the typeface end of the Lasernut U4 will get
 





Independent Front and Rear Suspension

Independent Front and Rear Suspension
The front and rear suspension offer fantastic handling with a consistent feel and the capability to take in bumps. Everything adds up to a buggy that's dialed in for maximize efficiency right out of package.
 

4x4 Driveline with Adjustable Differentials

4x4 Driveline with Adjustable Differentials
Full-time four-wheel drive offers increased traction and handling. The front, center (aluminum) and rear differentials can also be tuned for numerous conditions.
 





Metric Hardware

Metric Hardware
Total metric hardware is included throughout the Lasernut U4, including bearings, screws and nuts.
 

50+ MPH Firma Motor

50+ MPH Firma Motor
The brushless Spektrum Firma 4-Pole 1900kv 550 Motor will offer excellent power (50+ MPH) with a 4 cell Lipo (not consisted of).
 





Spektrum DX3 Radio System

Spektrum DX3 Radio System

Spektrum™ DX3™ Radio System
The Spektrum™ DX3™ radio system provides innovative features like AVC control, a 3-position throttle restricting switch and travel change.





The Full-Throttle Flexibility of AVC Innovation

The Full-Throttle Freedom of AVC Technology

The Full-Throttle Freedom of AVC® Technology
The receiver's integrated AVC® (Active Automobile Control®) traction control system works behind the scenes, making numerous throttle and steering modifications per 2nd, so more of the motor's power is equated into ballistic speed and velocity rather of just flying dirt. The patent-pending AVC system includes a level of efficiency that merely cannot be discovered with any automobile from any maker besides Horizon Hobby. Like traction control in your full-scale automobile, you can activate or shut off the system on the fly and change the level of stability based upon driving conditions. Any RC automobile can go quick and with AVC you can go faster while maintaining optimum stability in all driving conditions.



Specifications

Approximate Assembly Time: No assembly required

Batteries: 3S-4S LiPo, offered individually

Battery Measurements: t

Body: Trimmed and painted

Brakes: Essential with ESC

Bushing Material: Metal

Chassis: 3mm, 6061 T-6 Aluminum

Conclusion Level: Ready-To-Run

Differential: Sealed viscous filled gear type

Drivetrain: 4WD

Ground Clearance: 1.75 in (44.4mm)

Height: 8 in (203.2mm)

Internal Equipment Ratio: 3.89:1

Length: 24.3 in (617.2mm)

Motor Size: 550 4-pole, 1900Kv

Motor Type: Brushless, Non-sensored brushless

Pinion: 12T

Shock Type: Aluminum body oil-filled

Speed Control: Y

Suspension: Independent

Innovation : Smart Innovation

Tire Size: 5.75 in (146mm)

Tire Tread: BFG Mud Terrain

Track: Front and Rear 13.25 in (336.5mm)

Weight: Varies with devices

Wheel Width: 1.63 in (41.4mm)

Wheelbase: 14.75 in (374.6mm)

Frequently Bought Together

Losi 1/10 Lasernut U4 4WD Brushless RTR with Smart ESC, Black
+
Common Sense RC Lectron Pro 11.1V 5200mAh 50C Lipo Battery with EC5 Connector
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Losi 1/10 Lasernut U4 4WD Brushless RTR with Smart ESC, Blue
This Item: Losi 1/10 Lasernut U4 4WD Brushless RTR with Smart ESC, Black
$539.99
Common Sense RC Lectron Pro 11.1V 5200mAh 50C Lipo Battery with EC5 Connector
$72.09
Losi 1/10 Lasernut U4 4WD Brushless RTR with Smart ESC, Blue
$539.99

Total Price: $1,152.07

Add All Three To Cart

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