The Losi Lasernut U4 1/10 4WD Brushless RTR Rock Racer is a scale replica of the renown Lasernut Unlimited U4 FIS (Full Independent Suspension) rock race buggy. Starting with the Losi TEN platform as a base, the Lasernut model adds items rock racers demand such as aluminum shocks, sway bars and adjustable turnbuckles. Working together with BFGoodrich Tires, the Lasernut U4 has scaled down KM3 tires that have an aggressive tread pattern that is capable of tackling a wide variety of terrain - from dirt and sand to chunky rocks and slick slabs.
The Lasernut is currently the only complete Unlimited U4 FIS racer on the market featuring all the technological advances drivers demand including the Spektrum Smart 130A Brushless ESC and Spektrum 4-Pole 1900kv 550 motor providing greater efficiency improving run times with increased power. Of course, the ESC is waterproof, completely programmable and comes pre-wired with a high-current IC5 connector. Drivers stay in control with a DX3 transmitter, a Spektrum AVC receiver with steering priority, and an officially-licensed Lasernut race-inspired scale U4RC body/roll cage with two different graphics and color variations. The Losi Lasernut Rock Racer is the ultimate U4 racer with scale looks, insane speeds and performance.
Features:
- TEN 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 Components
- 12mm race inspired 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
Approximate Assembly Time: No assembly required
Ball Bearings: Full set
Battery: Sold Separately
Body: Trimmed and painted
Brakes: Integral with ESC
Bushing Material: Metal
Charger: Sold Separately
Chassis: 0.12" (3mm) thick 6061 T-6 aluminum
Completion Level: Ready-To-Run
Differential: Sealed viscous filled
Drivetrain: 4WD
Drive Type: Forward/Brake/Reverse
Final Drive Ratio: 12.97:1
Front Track: 13.25" (336mm)
Power Type: Electric
Gear Pitch: MOD1
Ground Clearance: 1.75" (44mm)
Internal Gear Ratio: 3.89:1
Max Battery Dimensions: 5.45 x 1.83 x 1.38" (138.5 x 46.5 x 35mm)
Motor Type: Brushless
Pinion: 12T
Product Height: 8" (203 mm)
Product Length: 24.3" (617 mm)
Product Weight: Varies with equipment
Product Width: 13.25" (337 mm)
Radio: Included
Rear Track: 13.25" (336mm)
Receiver: Included
Scale: 1/10
Servos: Included
Shock Type: Oil-filled aluminum body
Speed Control: Included
Spur Gear: 40T
Suspension: Independent
Technology: Smart
Track: 13.25" (336mm)
Vehicle Type: Rock Racer
Water-Resistant: Yes
Wheelbase: 14.75" (375mm)
Includes:
- (1) Lasernut U4 4WD Brushless RTR Vehicle
- (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 Manual
- 3S or 4S Hardcase LiPo Battery with IC5/EC5 Connector
- 3S/4S Compatible LiPo Charger
- Protective LiPo Storage/Charging Case
This product was added to our catalog on March 8, 2021
Now the Good, the car is beautiful to look at, it takes great photos and they did a great job replicating the 1:1. Other than that its a car whose build quality reads more $250 than $500+. I have owned other Losi products before and was really hoping that being under the Horizon hobby banner would bring up their quality. Sorry to say that that is not the case. My Lasernut required a full rebuild after one run, on the second (just bashing around a soccer field with my daughter) the rear rear assembly pulled out and now it's pretty much a useless pile of parts.
This is definitely a "parts bin" car wrapped in very pretty packaging.
The other really big issue is with the steering assembly. Bushings instead of bearings is lame so i replaced the steering setup with Exotek aluminum and bearing instead of bushings. Even using loctite i can't keep the steering together long enough to last 1 battery pack. After the stock electronics, servo esc & motor, died they were upgraded. The stock servo was weak as expected but not terrible but the motor just couldn't handle 3s with 16t pinion and lasted about 13 battery packs. I really like this RC but it's just terribly designed and unreliable, making it very disappointing to own and also very expensive. If they made a v2 with 1/8th scale drivetrain, larger bearings etc., this would be an amazingly cool looking and fun RC. As it is, i think my lemon, along with the mini B pro roller, are the 2 worst RC cars I've ever owned and had made me make the move to Tekno RC for their durability. I wouldn't recommend this to anyone that wants to drive as intended, on the ground, flat out fun off-road buggy, for to durability issues.
I've only my buggy a short time. This would be the best out of the box RC I have ever owned. Its fast and tough. So far the only thing I have is a twin cooling fan. We are just coming out of winter with day temps only at 14-19c. The motor was getting quite hot. Haven't had a lot of time due to work. Anyone who wants a cool buggy this is it. Thats why it gets five stars, also five stars to Amain for there service.
Cheers Kiwi Pete
Down under New Zealand
The steering doest work. It turn to the left but only turns half way to the right.
All all 4 wheels need shims and wheel hex is barely holding the wheel. I haven’t even run the truck yet as I'm afraid they may all strip.
The brake needs to be changed too as ilthe truck barely stops. So will have to re calibrate.
Didn't expect this from losi. I have 2 sbr's and they great.