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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 Jan 8, 2026 11:41:17 AM

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

Water resistant Parts

12mm race motivated 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

Three Oil Filled Gear Differentials





Overview
The 10 4WD platform is recognized all over the world as the personification of strength and sturdiness. The Losi® Lasernut U4 1/10-scale 4WD Rock Racer (RR) RTR with Spektrum™ Smart builds on the 10 design and includes products rock racers require such as aluminum shocks, sway bars and adjustable turnbuckles. Plus, it includes a full metric hardware bundle for around the world compatibility. The Lasernut is presently the only total Unlimited U4 FIS (Complete Independent Suspension) racer on the market including all the technological advances chauffeurs require consisting of the Spektrum Smart 130A Brushless ESC and Spektrum 4-Pole 1900kv 550 motor providing higher performance improving run times with increased power. Obviously, the ESC is water resistant, completely programmable and comes pre-wired with a high-current IC5™ adapter. Chauffeurs remain in control with a DX3™ transmitter, a Spektrum AVC® receiver with steering top priority, and an officially-licensed Lasernut race-inspired scale U4RC body/roll cage with 2 different graphics and color variations. Collaborating with BFGoodrich Tires, the Lasernut U4 has scaled down KM3 tires that have an aggressive tread pattern efficient in dealing with any surface. The Losi Lasernut Rock Racer is the ultimate U4 racer with scale looks, insane speeds and efficiency, and Spektrum Smart Technology.





Needed to Complete

3S or 4S Hardcase LiPo Battery with IC5/EC5 Port

3S/4S Suitable LiPo Battery Charger

Protective LiPo Storage/Charging Case

What remains in the Box?

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

(1) Spektrum™ Firma 130A Brushless SMART ESC (set up)

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

(1) Spektrum™ SR6100AT Receiver with AVC

(1) Spektrum DX3™ 2.4GHz Radio Transitter

(1) Item Handbook







 



Famous 10 Platform

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

Spektrum SMART ESC

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





Officially Accredited Scale Body and Roll Cage

Officially Accredited Scale Body and Roll Cage

Officially Licensed Scale Body and Roll Cage
A Lasernut Licensed race motivated scale U4RC body/roll cage with amazing graphics provided in 2 different color variations with a flip up cage for simple access to the battery.





Officially Accredited Wheels and Tires

Officially Licensed Wheels and Tires
The consisted of scale accredited Raceline 2.2 racing wheels and BFGoodrich KM3 tires include an aggressive tread pattern that deals with any surface and excellent appearances while out on any course.
 

Water resistant Electronics

Waterproof Electronics
The Lasernut U4 is filled with water resistant electronic devices consisting of the receiver, servo and ESC. Whatever is sealed versus the elements allowing you to splash in the rain, spin in the mud and make tracks in the snow. It's full-throttle freedom to run anytime, rain or shine
 





Coil-Over Oil Filled Shocks with Pre-Load Change

Coil-Over Oil Filled Shocks with Pre-Load Adjustment
Adjustable oil filled coil-over shocks on all four corners absorb the gnarliest surface. The aluminum threaded 12mm shocks are fully-adjustable and allow you to tune the handling of the Lasernut U4 to take full advantage of efficiency and dominate anywhere.
 

Aluminum Chassis

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





LED Light Bar and Pod Lights

LED Light Bar and Pod Lights
The enjoyable doesn't stop even when the sun goes down with the Lasernut U4. A dazzling LED lights on the incorporated light bar cast more than enough illumination for performing 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 help you press the Lasernut U4 to its limitations.
 

Adjustable Shock Towers

Adjustable Shock Towers
4mm 6061-T6 Aluminum shock towers are built difficult to withstand the penalty 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 amazing managing with a constant feel and the ability to absorb bumps. All of it amounts to a buggy that's dialed in for take full advantage of efficiency right out of the box.
 

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 likewise be tuned for different conditions.
 





Metric Hardware

Metric Hardware
Complete metric hardware is featured throughout the Lasernut U4, consisting of bearings, screws and nuts.
 

50+ Miles Per Hour Firma Motor

50+ MPH Firma Motor
The brushless Spektrum Firma 4-Pole 1900kv 550 Motor will offer exceptional power (50+ Miles Per Hour) 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 offers advanced features like AVC control, a 3-position throttle limiting switch and travel change.





The Full-Throttle Flexibility of AVC Technology

The Full-Throttle Freedom of AVC Technology

The Full-Throttle Freedom of AVC® Technology
The receiver's integrated AVC® (Active Vehicle Control®) traction control system works behind the scenes, making numerous throttle and steering modifications per 2nd, so more of the motor's power is translated into ballistic speed and acceleration rather of simply flying dirt. The patent-pending AVC system includes a level of efficiency that merely cannot be found with any car from any manufacturer aside from Horizon Hobby. Like traction control in your full-scale car, you can trigger or shut down the system on the fly and change the level of stability based upon driving conditions. Any RC car can go quick and with AVC you can go much faster while maintaining maximum stability in all driving conditions.



Specifications

Approximate Assembly Time: No assembly needed

Batteries: 3S-4S LiPo, sold individually

Battery Dimensions: t

Body: Cut and painted

Brakes: Integral with ESC

Bushing Material: Metal

Chassis: 3mm, 6061 T-6 Aluminum

Completion Level: Ready-To-Run

Differential: Sealed thick filled equipment type

Drivetrain: 4WD

Ground Clearance: 1.75 in (44.4mm)

Height: 8 in (203.2mm)

Internal Gear 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

Technology : Smart Technology

Tire Diameter: 5.75 in (146mm)

Tire Tread: BFG Mud Surface

Track: Front and Rear 13.25 in (336.5mm)

Weight: Differs with equipment

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
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

Total Price: $612.08

Add Both To Cart

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