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Losi Rock Rey 1/10 4WD Electric Rock Racer Kit

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This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.
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Low Price: $249.99
Discontinued Online

The Losi Rock Rey 1/10 4WD Electric Rock Racer Kit is most at home in rocky terrain - the rougher the better! The Rock Rey kit includes a host of option parts right in the box, so grab a handful of trigger and let her eat! Because its a kit, you have the freedom to accessorize and build the rig how you want it right out of the gate. With a revised roll cage that resembles full-scale rock racers, combined with revised front-end geometry, aluminum rear upper links and upper rod track mount, adjustable camber links and steering turnbuckles you get the durability and tuning options necessary for competitive rock racing.

In Depth Features:
  • Build It Your Way: You call the shots and build the Rock Rey any way you want.
  • 4WD Independent Front Suspension with Solid 4 Link Rear Axle: Scale looks and amazing performance over rough terrain.
  • Option Parts Included: Kit includes aluminum rear upper links and upper rod track mount, as well as adjustable camber links and turnbuckles for steering. If you’re into U4 racing, you’ll love the diff locker for the center differential.
  • Rear-Loading Battery Door: Quick battery changes-no body clips need to be removed whatsoever.
  • Aluminum Chassis and Injection Molded Composite Roll Cage: These enhance the Rock Rey’s durability and scale appearance.
  • LED Light Bar: Drive into the night with the 12 LED light bar, which is powered by the receiver.
  • Metal Inserted Servo Horns: Three metal servo horn inserts support 23, 24 and 25 tooth spline servos so you can use any servo you want and provide excellent durability.
  • 2.2" x 5.8" Maxxis Creepy Crawler LT Tires: These enhance the scale looks and provide aggressive tread for all-terrain applications.
  • HD Metal Gear Transmission:The HD metal gear transmission provides a robust drivetrain.
  • Headlight Receptors: The kit includes headlight receptors already in place-all you need to do is add your own LEDs.
  • Preset Motor Plate: Different pinion choices offer precise and easy mesh settings.


  • Build It Your Way
  • 4WD Independent Front Suspension with Solid 4 Link Rear Axle
  • Option Parts Included
  • Rear-Loading Battery Door
  • Aluminum Chassis and Injection Molded Composite Roll Cage
  • LED Light Bar
  • Metal Inserted Servo Horns
  • 2.2" x 5.8" Maxxis Creepy Crawler LT Tires
  • HD Metal Gear Transmission
  • Headlight Receptors
  • Preset Motor Plate
  • Multiple piece polycarbonate body with detailed interior
  • Oil-filled shocks

Type: Rock Racer Kit
Scale: 1/10
Length: 20.75 in (527mm)
Width: 12.75 in (323.8mm)
Height: 8.75 in (222.3mm)
Ground Clearance: 2.2 in (55.9mm) at rear diff
Wheelbase: 15.0 in (381mm)
Weight: 6.55 lb (3.0kg)
Chassis: 3.5mm Plate, 6061-T6 Aluminum
Suspension: Independent Front/4-Link Rear
Drivetrain: 4wd (locked rear, gear diff front and rear)
Tire Type: Maxxis Creeper Crawler LT
Motor or Engine: 550 6-Pole 2800Kv Non-Sensored Brushless (Sold Separately)
Speed Control: (Sold Separately)
Radio: (Sold Separately)
Servos: (Sold Separately)
Batteries: 2S 5000mah LiPo with EC3™ Connectors (Sold Separately)
Charger: (Sold Separately)
Gear Pitch: 1.0 Module
Kit/RTR: Kit
Shock Type: Oil-Filled/Coil-Over Spring
Body: Screened, Polycarbonate
Ball Bearings: Yes
Experience Level: Intermediate
Recommended Environment: Outdoor
Assembly Time: 10-15 Hours
Is Assembly Required: Yes


  • (1) Losi® Rock Rey™ Truck Kit
  • (1) Clear Body
  • (1) 30 Weight Shock oil
  • (4) Wheels and Tires
  • (1) 10T Pinion Gear
  • (1) User Manual 

Needed To Complete:

  • Motor
  • Electronic Speed Control
  • Servo
  • Radio System
  • Battery
  • Charger
  • Paint
  • Tools
  • Glue

This product was added to our catalog on November 22, 2017

Wednesday, Nov 14 2018 (8 months ago)
Losi Rock Rey 1/10 4WD Electric Rock Racer Kit
I was excited about building this kit. Bought it from Amain through Ebay. The first step is to assemble the front gear box (differential), and I never made it past this step. Why ? Because the ring and pinion are warped. When you turn the pinion, it goes part way around, and then gets tight.
I tried it with the plastic housing, and a Hot Racing aluminum one, as well as with no shims, and got the same result.
Contacted Amain and Losi, and they would do nothing without me jumping through all kinds of hoops. Not the way to take care of your customers. I have spent thousands with Amain.
I haven't bought anything from Amain since, and will never buy another Losi. And I'm sure as hell not spending another $40 for new ring and pinion !!! Is nobody accountable for this over-priced junk anymore ?
Verified Owner
Monday, Jul 30 2018 (12 months ago)
Losi Rock Rey 1/10 4WD Electric Rock Racer Kit
I've recently been roped back into RC, first finishing an original AE SC10 build I started 7 yrs ago, which got derailed by a couple of babies since then . Now, those babies are 5 and 4, and having a blast with it since I finished it off to run with my brother in law.. newfound common childhood loves ftw .

I loved my original Kyosho Outlaw Ultima, which is why I went with the SC10 when I first came back to RC, but a 4x4 has always been on my wishlist... enter the $250 Losi Rock Rey kit! The price alone to me was CRAZY, but the size (nearly 1/8 scale, Mod1 pitch gears) and aluminum hop-ups (rear link mount, front adj. camber/steering links/rods, metal servo horn inserts to avoid the RTR stripping problem), $40-$50 value thrown in vs the RTR plastic parts they replace, make this the best value i could find by a mile.

I loved the challenge in the build and very different capabilities and style. Yes, servicing can be a pain, so just make sure you're completely set with the internals i.e. steering servo alignment, ESC mount, receiver, etc, and you'll be able to reduce that. Then again, because I miffed a few things up-front and have had to take it apart, i've gotten the process down to about 12-14 screws, and don't need to remove the lexan body panels, just the cage.

Also - regarding any cornering issues (still better in the turns than the competition), be sure to tape your stock tires to lessen ballooning and tire roll. Also, i decided to use the alternative shock mounting holes yesterday, allowing the rear to squat a bit more, lowering the center of gravity a bit and really making a difference. If you plan to do some serious rock crawling, i'd move it back to the stock geometry, which is an easy adjustment.

Highly recommended, extremely versatile beast of a truck!

PS I went with the Castle Mamba Monster X ESC + 1406-2850KV Brushless/Sensored Crawler combo, and it just flies. tons of torque, great low-end crawling and top-end speed. Next installs will be Hot Racing's front sway bars and front shock tower brace. Speaking of the shocks, i know some balk at the plastic/nylon bodies and feel they don't provide ample dampening. Perhaps this will be the case with lower profile / sidewall tires, but for now, they seem to work very well with the stock tires.
Saturday, Oct 6 2018 (9 months ago)
Losi Rock Rey 1/10 4WD Electric Rock Racer Kit
Great build,awesome platform. I build all my kits,no rtr's. In hobby for 10+ years. This kit come with a easy to read manual and quality parts. I have two built two yeti's and i like this platform more. The price makes this the best rock racer out right now!
Friday, Mar 9 2018 (about a year ago)
Losi Rock Rey 1/10 4WD Electric Rock Racer Kit
Easily the ****iest kit I've put together in the last 20 years. I've never gotten a full pack through without it breaking, and thats on 2s. Did research on the weak points so I upgraded the carrier, ssd front diff housing, aluminum bell crank/servo horn, MIP driveshaft when I originally built it. Now I can't keep the diff cups from exploding, or screws from failing in front or rear diffs, diffs need an upgrade option badly and not just twin hammer diff cups/protek needs something made for this truck specifically to fix that. Wouldn't recommend to anyone that wants to U4RC with it, would probably stay together as a crawler, but its a rock racer so....