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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
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Description
Losi Hammer Rey U4 1/10 4WD Brushless RC Rock Racer Green LOS03030T2The Losi Hammer Rey U4 Rock Racer is a 1 10 scale ready to run 4WD brushless truck built for high performance off road racing. Featuring a licensed Currie U4 Racer body, Spektrum Smart brushless power system, AVC stability control and detailed scale accessories, it delivers speed, control and realistic rock racing style. Features Licensed Currie U4 Racer Body: Provides authentic scale rock racing style with detailed green graphics Spektrum Brushless
The Losi Hammer Rey U4 Rock Racer is a 1/10 scale ready-to-run 4WD brushless truck built for high-performance off-road racing. Featuring a licensed Currie U4 Racer body, Spektrum Smart brushless power system, AVC stability control and detailed scale accessories, it delivers speed, control and realistic rock racing style.
Features
- Licensed Currie U4 Racer Body: Provides authentic scale rock racing style with detailed green graphics
- Spektrum Brushless Power: 3150Kv brushless motor and Smart 130A ESC deliver strong acceleration and high-speed performance
- AVC Stability Control: Active Vehicle Control helps improve traction, acceleration and handling across changing terrain
- Spektrum DX3 Radio System: Included 2.4GHz transmitter features a 3-position throttle limiting switch for adjustable control
- 4WD Drivetrain: Single-speed transmission with sealed front and centre differentials is built for rugged off-road use
- Independent Front Suspension: Combines with a solid rear axle for realistic handling and rock racing capability
- Licensed Wheels and Tyres: KMC Machete wheels and Nitto Trail Grappler M/T tyres add scale detail and dependable grip
- Waterproof Electronics: Receiver, servo and ESC are designed for driving in wet and muddy conditions as detailed in the manual
- Functional Lighting: LED light bars and headlights improve scale realism and visibility
- Scale Details: Includes interior, driver figures, fire extinguishers, side mirrors, faux sway bar, brake calipers and rotors
- Updated Components: Features an updated steering system and updated rear axle housing for improved durability and control
Specifications
- Brand: Losi
- Model: Hammer Rey U4 Rock Racer
- Part Number: LOS03030T2
- Scale: 1/10
- Completion Level: Ready-to-run
- Vehicle Type: Rock racer truck
- Drive System: 4WD
- Motor Type: Brushless
- Motor: Spektrum 3150Kv brushless motor
- ESC: Spektrum Smart 130A brushless ESC
- Radio System: Spektrum DX3 2.4GHz transmitter
- Receiver: Spektrum SR6200A DSMR 6-channel AVC telemetry receiver
- Input Voltage: 2S to 4S LiPo
- Recommended Battery: 2S to 3S LiPo with EC5 or IC5 connector
- Top Speed: Up to 40 mph with suitable battery and conditions
- Transmission: Single-speed
- Gearing: MOD 1 gears
- Suspension: Independent front suspension with solid rear axle
- Wheels: Licensed KMC Machete wheels
- Tyres: Licensed Nitto Trail Grappler M/T tyres
- Length: 26.45 inch or 672mm
- Width: 12.37 inch or 314mm
- Height: 11.11 inch or 282mm
- Wheelbase: 17.22 inch or 437mm
- Colour: Green
Includes
- 1 x Losi Hammer Rey U4 1/10 4WD brushless rock racer
- 1 x Spektrum DX3 radio system
- 1 x Product instruction manual
- 4 x AA batteries
Needed To Complete
- 1 x 2S to 3S LiPo battery with EC5 or IC5 connector
- 1 x Compatible LiPo battery charger
Important Notes
- Drive battery and charger are not included
- Refer to the instruction manual for waterproof electronics guidelines and maintenance requirements
- LiPo batteries require safe charging, handling and storage practices
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Foam Mattress NEEDs Foam Pillows
Color: Blue-ice Plus, Size: King(Pack of 2), Color: Blue-ice Plus, Size: King(Pack of 2)
10 stars!! Quality foam, structure & price. Best bang for my buck.
HRV, readiness & total sleep score metrics increased drastically this week. See screenshot :)
Support:
Molds and cushions every crevice under my neck and above shoulders. So comfy
Size:
Adjustable loft but king length is perfect to hug and rest your head. Love love love. The 1st 2 nights were uncomfortable with pillow as is, first night I was up at 3am half asleep pulling foam out but wasn't enough. The second night at 2am I pulled out more stuffing. I was getting frustrated.. my Oura ring showed both nights I was awake every hour. Not good. Before the 3rd night I pulled enough to fill the bag the 2 pillows arrived in. Boom -8hrs sleep and for the first time ii years I achieved 17% Deep sleep. Huge.
Weight:
Perfect weight with adjustment. Squishy and molds to b the contour of my neck and shoulders
Softness:
Like the baby bear.. just right.
Comfort:
Very comfortable after removing 30% foam in both pillows. I actually now have enough to make a 3rd pillow, replace old foam, or adjust OGs, Still to early to measure.
If you have a foam mattress that contours your body but not your head you'll end up with neck and/or back pain from head being elevated- not sinking/molding the body into a foam mattress.
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Reviewed in the United States on July 1, 2025
★★★★★ 3
These are not sized correctly - beware
Color: Blue-ice Plus, Size: King(Pack of 2), Color: Blue-ice Plus, Size: King(Pack of 2)
Edit: I was going to return these pillows but the seller contacted me and offered a full refund due to the size issue without having to send the pillows back.
I am happy with this and happy to keep them on a spare queen size bed as they really are nice pillows. Just the wrong size.
pros: they are a nice pillow and the cooling feature is really great, and you can adjust to your liking
cons: absolutely wrong size. Ordered King, tag says king, all measurements on listing and tag say 20x36, in reality they are more like 20x30. Definitely Queen pillows being sold as King.
I did not see any reviews at first about size issues but after I got these and did a search it does look like others have had the same problem.
A shame, would have given them a great review if they were the correct size
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Cool and comfy
Color: Blue-ice Plus, Size: King(Pack of 1)
Great pillow. Keeps you cool.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Really Good Cooling Pillows for Sleeping
Color: Blue-ice Plus, Size: Queen(Pack of 2), Color: Blue-ice Plus, Size: Queen(Pack of 2)
These cooling pillows are very soft and provide excellent support for your head and neck. They are adjustable by taking our the stuffing if you need them to be more flat or less firm. The look great and comes in a pack of two which is a great value. During use, I did notice they have great shape retention and it does not take them long to return to their fluffy full shape. I am a hot sleeper and these do keep your head cool - just be aware using a pillow cover does reduce the cool ability but this allows you to adjust for weather like during winters to add a pillow case for extra warmth. Very happy with this purchase and got a second set to replace my old pillows.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Soft and smooth cover
Color: Grey, Size: Body（20"X 54"）
This is a nice pillow cover overall. The fabric feels good and it's comfortable to sleep on, especially compared to a more basic cotton cover. It is maybe a little thinner than I expected, so if you want something thick and heavy this probably isn't that. But for a soft smooth cover that fits and feels decent, I think it's worth it. No major complaints from me after using it.
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Reviewed in the United States on May 16, 2026