Can the motor be replaced or upgraded?

Thank you for the inquiry. Yes, the motor can be replaced or upgraded to brushless but you need a brushless ESC. We suggest using the factory version motor.

Whats the biggest wheel size i can go up to with the 903a model?

I wouldn’t go much taller because it puts more drag on the motor and makes it hot

Is it possible to get a replacement motor or upgrade it to a different one?

Thank you for the question. Yes, the replacement motor should be a brushed 390 motor or brushless motor which is not larger than the original motor.

What's the battery size compartment? Or what are the dimensions of the batteries that come with 903a?

The battery size is 2S, 1600 mAh 30C 7.4 volts. Battery dimensions are about 1-1/4" x 2-3/4", or about 34 mm x 70 mm, and the compartment is about 1-1/2" x 2-3/4", or 38 mm x 70 mm, with a lot of over-head space (where the cab lines up).

Haiboxing 1 12 Scale Rc Cars 903 Rc Monster Truck

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🚀 Dominate Every Terrain with Speed, Power & Precision!

PRECISION 4 WD CONTROL - Full proportional steering & throttle with 2.4GHz interference-free radio for razor-sharp handling.
RACE READY 38 KM H SPEED - Unleash adrenaline with a powerful 390 motor hitting thrilling top speeds.
EXTENDED PLAYTIME POWERHOUSE - Dual 7.4V 1500mAh Li-ion batteries deliver over 40 minutes of non-stop off-road action.
SPLASH PROOF BUILT TO LAST - IPX4 splash resistance and reinforced PA materials keep your truck conquering mud and gravel with confidence.
RUGGED METAL DRIVETRAIN SUSPENSION - Durable cast metal gears, aluminum oil-filled shocks, and independent suspension for ultimate stability.

The HAIBOXING 1:12 Scale 903 RC Monster Truck is a high-performance, hobby-grade remote control vehicle designed for both kids and adults. Featuring a robust 390 motor, it reaches speeds up to 38 km/h and offers over 40 minutes of playtime powered by dual Li-ion batteries. Its metal drivetrain, aluminum oil-filled shocks, and independent suspension ensure superior durability and off-road stability. Equipped with a 2.4GHz radio system for interference-free control up to 280 feet, this splash-resistant truck is perfect for outdoor adventures on gravel, sand, and grass. Ready to run out of the box, it’s an ideal gift for enthusiasts seeking thrilling, precision driving experiences.

Specifications

ASIN	B0BCGR253J
Additional Features	Portable
Age Range Description	Kid
Are Batteries Required	Yes
Batteries are Included	Yes
Battery Description	Lithium-Ion
Best Sellers Rank	#34,019 in Toys & Games ( See Top 100 in Toys & Games ) #70 in Hobby RC Trucks
Brand Name	HAIBOXING
Color	903
Customer Package Type	Box
Customer Reviews	4.5 out of 5 stars 831 Reviews
Included Components	Battery, Charger, Product Manual, Remote, Screwdriver
Indoor Outdoor Usage	Outdoor
Is Assembly Required	No
Item Dimensions	13.4 x 11 x 6.7 inches
Item Type Name	RC Trucks
Item Weight	4.5 Pounds
Manufacturer	Shantou Haiboxing Technology&Education Model Co., Ltd.
Manufacturer Maximum Age (MONTHS)	1188
Manufacturer Minimum Age (MONTHS)	96
Manufacturer Part Number	903
Manufacturer Warranty Description	30 Day Warranty Against Manufacturer Defects
Material Type	Aluminum, Metal, Plastic
Maximum Speed	38 Kilometers per Hour
Model Name	903
Model Number	903
Model Year	2022
Number of Batteries	1 Lithium Ion batteries required. (included)
Number of Items	1
Number of Players	Multiple
Operation Mode	manual
Power Source	Battery Powered
Scale	1:12 Scale
Size	11 x 13.4 x 6.7 inches
Subject Character	Monster
Theme	car, off-road, train, truck
Toy Vehicle Form	Truck
Unit Count	1.0 Count

Reviews

J**.

26.10.2022

S**E

22.08.2024

G**T

2.01.2026

A**Z

6.10.2024

D**R

9.01.2023

D**.

20.01.2024

T**E

21.07.2025

C**M

28.02.2026

R**B

1.02.2023

R**H

8.08.2023

M**Z

30.01.2026

B**S

9.02.2024

C**R

8.03.2023

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$332.57

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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HAIBOXING 1:12 Scale RC Cars 903 RC Monster Truck, 38 km/h Speed Hobby Fast RC Cars for Kids and Adults Toy Gifts, 2.4 GHz 4WD Electric Powered Remote Control Trucks Ready to Run 40+ Min Playtime

Description

Specifications

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Common Questions