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Losi 1/10 Lasernut U4 4WD Brushless RTR with Smart ESC, Blue (Losi 03028T1 | LOS03028T1)

Model: Losi 03028T1
Dist. #: LOS03028T1   SKU: LOS03028T1

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List Price:  $609.99
Price:  $539.99
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Updated on Feb 3, 2023 11:07:12 AM

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

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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 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 Gear Differentials

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 constructs on the 10 style and includes items rock racers demand such as aluminum shocks, sway bars and adjustable turnbuckles. Plus, it includes a full metric hardware package for worldwide compatibility. The Lasernut is presently the only complete Unlimited U4 FIS (Complete Independent Suspension) racer on the market including all the technological advances chauffeurs demand consisting of the Spektrum Smart 130A Brushless ESC and Spektrum 4-Pole 1900kv 550 motor offering greater effectiveness improving run times with increased power. Obviously, the ESC is water resistant, totally 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 concern, and an officially-licensed Lasernut race-inspired scale U4RC body/roll cage with two various graphics and color variations. Collaborating with BFGoodrich Tires, the Lasernut U4 has actually scaled down KM3 tires that have an aggressive tread pattern efficient in handling any terrain. The Losi Lasernut Rock Racer is the supreme U4 racer with scale looks, outrageous speeds and efficiency, and Spektrum Smart Technology.

Needed to Total

THREE or FOUR Hardcase LiPo Battery with IC5/EC5 Port

3S/4S Suitable LiPo Charger

Protective LiPo Storage/Charging Case

What remains in the Box?

(1) Lasernut U4 4WD Brushless RTR Lorry 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 Manual


Legendary 10 Platform

Legendary TEN Platform
The legendary, high-performance 10 platform includes a super-tough aluminum chassis and the ability to adjust 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 adapter. The ESC will deal with many sensorless brushless motors and is 3S-4S Li-Po compatible.

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 influenced scale U4RC body/roll cage with amazing graphics provided in two various color variations with a flip up cage for simple access to the battery.

Officially Accredited Wheels and Tires

Officially Licensed Wheels and Tires
The included scale licensed Raceline 2.2 racing wheels and BFGoodrich KM3 tires feature an aggressive tread pattern that deals with any terrain and good looks while out on any course.

Water resistant Electronic devices

Waterproof Electronics
The Lasernut U4 is packed with water resistant electronic devices consisting of the receiver, servo and ESC. Everything is sealed versus the components allowing you to sprinkle 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 Modification

Coil-Over Oil Filled Shocks with Pre-Load Adjustment
Adjustable oil filled coil-over shocks on all four corners soak up the gnarliest terrain. The aluminum threaded 12mm shocks are fully-adjustable and permit you to tune the handling of the Lasernut U4 to optimize efficiency and dominate 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 wide open, the 3mm chassis just keeps asking for more!

LED Light Bar and Pod Lights

LED Light Bar and Pod Lights
The fun doesn't stop even when the sun goes down with the Lasernut U4. A dazzling LED lights on the integrated light bar cast ample illumination for running at night. The pod lights are amber.

Adjustable Turnbuckles

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

Adjustable Sway Bars

Adjustable Sway Bars
The included sway bars are fully adjustable and assist you press the Lasernut U4 to its limitations.

Adjustable Shock Towers

Adjustable Shock Towers
4mm 6061-T6 Aluminum shock towers are built tough to stand up to the punishment the font end of the Lasernut U4 will receive

Independent Front and Rear Suspension

Independent Front and Rear Suspension
The front and rear suspension supply fantastic managing with a constant feel and the ability to soak up bumps. It all amounts to a buggy that's called in for optimize efficiency right out of the box.

4x4 Driveline with Adjustable Differentials

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

Metric Hardware

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

50+ MPH Firma Motor

50+ MPH Firma Motor
The brushless Spektrum Firma 4-Pole 1900kv 550 Motor will supply outstanding power (50+ MPH) with a 4 cell Lipo (not included).

Spektrum DX3 Radio System

Spektrum DX3 Radio System

Spektrum™ DX3™ Radio System
The Spektrum™ DX3™ radio system offers advanced functions like AVC control, a 3-position throttle limiting switch and travel adjust.

The Full-Throttle Freedom of AVC Technology

The Full-Throttle Freedom of AVC Technology

The Full-Throttle Freedom of AVC® Technology
The receiver's built-in AVC® (Active Lorry Control®) traction control system works behind the scenes, making numerous throttle and steering adjustments per 2nd, so more of the motor's power is equated into ballistic speed and acceleration instead of just flying dirt. The patent-pending AVC system includes a level of efficiency that simply cannot be discovered with any automobile from any manufacturer aside from Horizon Pastime. Like traction control in your full-scale automobile, you can activate or shut off the system on the fly and adjust the level of stability based upon driving conditions. Any RC automobile can go quick and with AVC you can go quicker while preserving optimum stability in all driving conditions.


Approximate Assembly Time: No assembly required

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

Conclusion Level: Ready-To-Run

Differential: Sealed thick filled gear 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 Size: 5.75 in (146mm)

Tire Tread: BFG Mud Terrain

Track: Front and Rear 13.25 in (336.5mm)

Weight: Differs with devices

Wheel Width: 1.63 in (41.4mm)

Wheelbase: 14.75 in (374.6mm)

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