Losi Super Baja Rey 2.0

Losi Super Baja Rey 2.0

It’s Huge

The Losi SBR 2.0 is one of the larger RC cars available today (currently on sale here). But it’s also quite different to most of the other 1/7, 1/6 and 1/5 scale fare you can choose. It might be the most unique offering in this scale, now I think about it. Consider: if you want to bash hard, you buy an X-Maxx, Outcast 8S or Kraton 8S. If you want to crawl or trail drive, the SCX6 has you covered. Large scale race track nearby? Get yourself a Losi 5IVE-T 2.0 or a DBXL and have at it. HPI’s Baja 5B has you sorted for big buggy action.

But what if you want scale desert truck driving? Humungous suspension travel, the kind of cornering that only a live rear axle can deliver? Something to match the Traxxas UDR favored by so many? But… bigger and more aggressive? Losi has you covered with the Super Baja Rey 2.0. Let me show you what makes this enormous monster so special.

Losi SBR 2.0

This is a 1/6 scale desert truck. I didn’t have the original one, so I can’t give you a side-by-side comparison, but Losi says this one is built on the Super Rock Rey chassis, but with an extra inch of wheelbase length. They’ve combined it with the front of the Super Baja Rey and there you go, SBR 2.0.

It’s a four-wheel drive vehicle that is engineered to be tough – but of course, with the live rear axle, it will take the right driving approach to keep the wheels on the ground. This style of vehicle is made to soak up big bumps at high speeds. While they can slide and corner reasonably well, this will never be a basher to replace the likes of the Arrma Senton 6S or similar, with its independent front and rear suspension. I guess you could say that RC desert trucks – the SBR here, the BR2.0, Traxxas UDR and so on – are all about the scale drive.

Losi SBR 2.0 Front LHS Corner

Body Issues

I’ll start with something that was a bit of a let-down. It’s only minor, but this isn’t a cheap model and so you expect the thing to be pristine out of the box. For this design, Losi elected to use something like vinyl wrap for the livery. Mine was a little worse for wear, with cracks in the decals around folds and edges. Some sheets were even misaligned. Screws were oxidized and there’s dust under the light bar lenses.

To be fair to Losi, this is surely a challenging model to assemble. Even in a production-line style setup, I expect it would take considerable effort to get something like this together without mistakes. But to find so many minor issues with my unit does make me wonder about quality control. Is it only the body I should be concerned about here, or will there be missing grease in diffs or a critical screw not secured completely?

Still Gorgeous Tho

The issues I had with this thing are only skin deep, as far as I can tell. At time of writing, I haven’t run the car yet, so if there are underlying mechanical oversights, I’ll edit this section later to let you know. But if you’re not looking closely, those misaligned panels and livery sheet cracks are not obvious. It’s all forgivable when you step back and take the thing in. This is a machine of beauty.

Radio System

Cars rarely came with radio systems in decades past. However, relative to RTR (Ready To Run) sales, kit builds are a lot less popular than they used to be. Many hobbyists may still prefer a kit (including me), but it isn’t what sells. Instead, manufacturers are typically now releasing models with everything assembled and included. The included radios with RTR systems have been hit and miss, maybe more on the ‘miss’ side for some time.

Horizon Hobbies has several big brands under its umbrella at this point. This includes the Losi vehicle here, but notably, also Spektrum. This is why you’ll get a Spektrum radio and power system with most Horizon-brand RTR models these days (Arrma, Losi, Axial, and so on). While the common and more basic Spektrum SLT3 system is fine, the better one is the Spektrum DX3 with 6100AT AVC receiver – and that’s what comes with the Losi Super Baja Rey 2.0.

I like this system in particular because of two dials that make it so much easier to use than so many others. The first is an adjustable braking dial – turn it up for more aggressive braking. The second is a stability control dial, or steering gyro – turn that up to have the car counter-steer more responsively to keep the nose pointed forward. In a car like this, I’d suggest the former is quite important and the latter is probably best left turned mostly down. Experiment and see; it’s so easy to adjust on this radio. I’m a fan! (The marks and dust are because Metro Hobbies sent me a floor model without telling me. Disappointing, but not a big deal).

Losi SBR 2.0 Spektrum DX3 Radio

The Main Thing

This is what we’re here for: that epic, desert truck suspension and live rear axle. Check these pictures out! Look at how much range there is, especially over the rear axle. It’s plush, heavy-duty and epic. Of course, the rear suspension is mounted on trailing arms, and everything about the arms at both ends is heavy duty and well designed. There are hefty sway bars at each end and it looks great. Even just typing this, I’m wondering how I’ve managed to not drive this car yet. I’m busy, but too busy to drive this car? I’m selling myself on this thing just writing this.

The front end has plenty of travel as well and the body has a pleasing amount of roll. There’s bolstering around the chassis mounts and both ends are adjustable with alu thumb screws. Looks great, too.

Drive Line

Steel universals are found throughout the vehicle’s drive line. The rear shaft is a fibre-infused telescoping unit that attaches to the steel unis at each end. Given the crazy power this car can make (and we should talk about that in a moment, see below), you’d reasonably question if plastic will be up to the job on the rear end, in particular.

Well, there are steel drive shafts available on the after-market for this car, but having discussed this car with other owners, the consensus seems to be that it’s tough enough for the job. Certainly, there’s not a lot of flex in the parts, but rigidity is probably the more important element here. The glass element should be sufficient. We’ll see!

Losi SBR 2.0 Rear Shaft and Links

Wheels and Tires

BF Goodrich Mud Terrain T/A KM3 tires are clamped securely in Method Racing beadlock wheels on 17mm hex adapters. Side walls are firm but have some flexibility and the foams are also medium-hard. Of course, there are the two full size, functional spares on the rear of the vehicle, which is part of the magic of this interesting car.

Power System

Bigger numbers don’t necessarily mean bigger speed. With RC power systems, getting the voltage, motor kv (revolutions per volt), and gearing correct can be a balancing act. Typically, larger scale vehicles will run lower kv motors, favouring higher volts to achieve the torque and power required to move a heavy vehicle rapidly.

The SBR 2.0 runs a Spektrum Firma 160A 8S-capable ESC, powering a hefty (no, really) 5687 750kv motor. This is both a huge diameter and lengthy can – this motor is 56mm across and 87mm long.Batteries are loaded from the bottom of the vehicle, also helping to keep the weight low. It has a claimed top speed of around 50mph. Doesn’t that sound kind of uncomfortable! Fun, though!

Losi Super Baja Rey 2.0

How does it drive? Well, I can’t give you that quite yet. I’m looking forward to it, but I’ve been waiting to drive with a Traxxas UDR so we can compare them a bit. I might try to throw in an Arrma Mojave 6S as well, and then we can see which might be the best to get for your purposes. I’ll put that video here, when I make it. I can’t wait!

Read more here and buy your own Losi Super Baja Rey 2.0 here.

Losi SBR 2.0 Front LHS

Don’t Miss

Meanwhile, you might be interested in reading about the 10-car roundup we’re doing at the end of 2023 and into early 2024. There are ten short course and desert trucks in 1/10 and 1/8 scale from all the big names and some of the smaller ones. The list includes the new Tekno SCT410 2.0, the Losi Baja Rey 2.0, Arrma Mojave 4S as well as the Senton 3S BLX, and more. Check out the channel for more.

Craig Veness

Craig Veness

RC-TNT

Craig has been into radio control since the 90s and into RC crawling since about 2010, when a Losi MRC started the obsession! Now it's all rocks this and crawl that and upgrade all the things! ...You know how it is, right? Welcome home 🙂

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Losi Promoto-MX: the Ultimate RC Motocross Experience

Losi Promoto-MX: the Ultimate RC Motocross Experience

New on Two Wheels

The world of RC vehicles is vast and varied, with models designed to replicate every type of real-world vehicle, from cars and trucks to planes and boats. But there’s one type of vehicle that’s been largely overlooked in the RC world until now: the motocross bike. Enter the Losi Promoto-MX, a groundbreaking RC motocross model that’s set to create a new niche in off-road RC.

Horizon Hobby launched this bike under the Losi brand at the start of July 2023. It caused quite a stir, as while bikes have been around for some years now, durability or performance or realism or size have all been challenges to the existing models from other manufacturers. To see one that is apparently stable off-road, with a realistic and bendy rider, whilst looking great and pulling stunts – well, that’s something new! Then consider the size of the thing and you have a compelling new toy to seriously consider!

Losi Promoto-MX Green Stand

Unprecedented Realism

The Losi Promoto-MX isn’t just another RC motorcycle. There are some good models around already, though they’re mainly on-road. The Losi is something different. It’s a meticulously designed, ultra-realistic 1/4 scale motocross bike that captures the thrill of riding a full-size bike with unprecedented accuracy – even if the rider’s rear doesn’t ever leave the saddle!

It’s clear the Losi team has gone above and beyond to reproduce true dirt bike performance. The realism of the Promoto-MX runs deeper than its faithfully detailed looks, too. Consider the narrow frame, the rider with authentic riding gear, and the officially licensed graphics. More important is the accurate performance, accomplished through a unique hybrid of mechanical and electronic technology that appears to let you run an RC bike like never before. More on that below; it is really quite impressive and it’s exciting to share if you’re new to this model!

Losi Promoto-MX Options

Cutting-Edge Technology

Losi teamed up with the engineers at Spektrum RC to reinvent stabilization technologies for a surface vehicle that requires balance to work. The Spektrum MS6X continuously calculates the bike’s positioning relative to gravity, taking into account the inputs from the transmitter. There’s a 2700kv motor driving a 22,000rpm gyroscopic wheel as part of this system. The MS6X feeds outputs to gyro, throttle and steering that give realistic and predictable handling to the ‘driver’ at the radio. The more I think about what they’ve done here, the more impressed I am – this thing is a marvel of modern technology.

But then, it gets better: stopping distance was cut in half by complimenting the traditional rear-wheel braking (ESC+motor) with a cable-driven front disc & caliper system. Just as on a real bike, stopping with both wheels is far superior to just the rear wheel, and marginally better than just using the front. (Of course, you can get lost in the techincal side of motorcycle handling and which brake to use when, but in an RC model, we don’t have to get so sidetracked!) This new technology works behind the scenes to give the Promoto-MX performance superior to any previous RC motorcycle.

Durability and Protection

Knowing the Promoto-MX would exceed eight pounds, the Losi team over-engineered critical areas to give the bike the extra support needed to withstand hard-hitting dirt bike action. The innovative front crash structure is rigid during normal running, but absorbs front impacts by compressing until the front tire bottoms into the chassis frame. That protects the front fork tubes from bending, keeping them safe and true. Included skid plates guard critical components from rocks and debris, and a twin aluminum plate chassis shields all of the bike’s electronics.

Losi Promoto-MX Disc Brake

Suspension Like No Other

No other RC product on the market has a suspension package like the Promoto-MX. Losi studied the suspension geometry and technology of full-size motorcycles to give it the same handling characteristics. The front suspension takes a unique approach to RC shocks with a front fork and internal dampener and spring. It’s adjustable, rebuildable, and looks like the real deal. The Promoto-MX also has a rising rate rear suspension, just like a real motorcycle. It starts soft around ride height but stiffens as the shock goes deeper into its travel, keeping the bike from bottoming out on flat landings.

Losi Promoto-MX Red Air

Losi Promoto-MX Powertrain

The heart of the Promoto-MX powertrain is a robust Spektrum Smart Brushless System, featuring a 3800Kv 4-pole brushless motor and 85A Smart ESC. This is a sensored system that will get you moving out of the gate hot, with enough torque to clear large triples and hit 40+ mph top speeds on a 2S LiPo battery. The durable drivetrain is true to scale, with chain drive that lets your rear tire rip whenever you’re ready to send it!

Losi Promoto-MX Green Tank

Realism in a Motorcycle

The Losi Promoto-MX RC motorcycle sets itself apart from every other remote control motorcycle and dirt bike with its scale details, authentic control, and realistic powertrain with disc brakes and chain drive. The gyroscopic force of the flywheel partnered with the new MS6X stabilizing technology from Spektrum deliver the stability of anything on two wheels, all in a 1:4 scale RC dirt bike package.

Something that maybe wasn’t practical to produce at scale until recent years, the Promoto-MX features a firm but flexible model human rider. The head jiggles over the bumps, there’s a bum on the saddle and the protective gear matches the smart livery of the bike, in all three colorful designs. The only thing you’ll miss seeing is the rider standing on the pegs when the going gets rough or the air gets big. Perhaps that’s one area modders can work on as this niche becomes more established. Today more than ever before, the potential for such a mod is there. We have the technology! …Probably!

Losi Promoto-MX Red Bike Stand

Mastering RC Motocross

Maneuvering a motorcross bike around obstacles, carving precise turns on the dirt or popping wheelies over berms are challenging enough on a real bike. When you consider that many RC cars are basically just suspension, steering and motor in a chassis, and then what is involved when you cut the number of wheels in half, making a stable and drivable model seems like a tall order. We know that keeping balance is easy enough for a bike, as long as that rear wheel is spinning. But what about stability in turns and in the air? The Losi Promoto-MX RC motorcycle has the stability you need to perform those stunts and tackle the tight turns thanks to an onboard gyro – but it doesn’t do everything, and has been designed in a way to be complimentary to the drive whilst still leaving enough challenge on the table for it to stay interesting! Working to improve your control and adding new skills to your repertoire should keep you coming back to the bike for more!

Losi Promoto-MX Top-down

Losi Promoto MX Specs

Dimensions

  • Model Scale: 1/4
  • Ground Clearance: 2.9 in (73mm)
  • Product Length: 20.2″ (513 mm)
  • Product Width: 10.8″ (274 mm)
  • Product Height: 17.3″ (439 mm)
  • Product Weight: 123.5oz (3500g)

 

Power

  • Battery: Sold Separately (or in bundle)
  • Connector Type: IC5

 

Motor & Gears

  • Drivetrain: 1WD
  • Motor Size: 540
  • Motor Type: 3800kv ‘Smart Brushless’ System
  • Final Drive Ratio: 12.0:1
  • Internal Gear Ratio: 4.8:1
  • Spur Gear: 50T
  • Pinion: 20T
  • Ball Bearings: Full Ball Bearings
  • Gear Pitch: 32P

 

Wheels & Suspension

  • Suspension: Front Fork, Rising Rate Rear Suspension
  • Shock Type: 16mm Big Bore Aluminum Shock
  • Wheel Width: Front – 1.1 in (28mm), Rear – 1.4 in (36.3mm)
  • Tire Compound: 65S
  • Front Brakes: Cable-Driven Piston/Caliper/Rotor
  • Rear Brakes: Motor Braking
  • Tire Tread: Dunlop Geomax MX53

 

Chassis & Tech

  • Chassis: 3mm Aluminum Plate
  • Body: Color Molded Panels with Wrap Graphics
  • Speed Control: Included
  • Charger: Sold Separately
  • Receiver: Included
  • Radio: Included
  • Technology: AVC and SMART, MS6X
  • Power Type: Electric
  • Servos: Included
Losi Promoto-MX Red Rider

Coming Soon!

The Losi Promoto-MX will be a game-changer in the world of off-road RC. It seems like one of those products that creates its own niche of vehicle upon release, in the same way the Axial SCX6 did, or the Traxxas TRX6, for example. Its unique design, innovative features, and high-performance capabilities make it a must-have for any RC enthusiast. I understand this model will be broadly available for sale at the end of August 2023. Whether you’re a seasoned pro or a beginner, the Promoto-MX is sure to provide hours of thrilling off-road racing action. Snap one up when they’re out – I know I will!

 

Buy here: https://www.horizonhobby.com/losi-promoto-mx-rc-motorcycle/

Photo credit: HorizonHobby.com

Losi Promoto-MX Red & Helmet
Craig Veness

Craig Veness

RC-TNT

Craig has been into radio control since the 90s and into RC crawling since about 2010, when a Losi MRC started the obsession! Now it's all rocks this and crawl that and upgrade all the things! ...You know how it is, right? Welcome home 🙂