Mongoose Switch Freestyle BMX Bike for Kids, 18-Inch, Black
- Kids' Bike
- 18 in
- 5-8 years
- Coaster
- More reviewed than 89%
Amazon Associate · we may earn from qualifying purchases. Prices & availability last checked Jul 8, 2026.
The Mongoose Switch R1840AZ is an 18-inch BMX bike designed for kids ages 5-7, with a steel frame and mag wheels. It features a coaster (foot) brake for safe stops and includes removable training wheels for balance learning. Ideal for urban trails and BMX terrain, it helps young riders build confidence.
- 18-inch mag wheels for durability and a sleek look
- Coaster (foot) brake for intuitive stopping
- Removable training wheels included for beginner balance
- Low stand-over steel frame for easy mounting and dismounting
| Model | R1840AZ |
| Wheel Size | 18 in |
| Age Range | 5-8 years |
| Brake Style | Coaster |
| Frame Material | Alloy Steel |
| Number of Speeds | 1 |
| Color | Black |
| Weight | 27 lbs |
This bike offers good value for the price, with a sturdy frame and smooth ride that appeals to young riders. Many buyers found it easy to assemble and appreciated the dual brake system.
- Young kids learning to ride
- First big kid bike
Assembly can be challenging due to poor instructions or incorrect part labeling, and some units arrive with missing or damaged components. Buyers without mechanical experience may struggle.
- Difficult assembly instructions
- Missing pedals or parts
- Bent front wheel or fork
- Incorrectly labeled pedals
How it ranks among the 150 kids' bikes we track
4.3★ across 2,400 Amazon reviews, weighted by review volume.
Cheaper than 21% of the kids' bikes we track.
More reviewed than 89% of the category.
Scores are computed from the 150 kids' bikes we track: Amazon rating weighted by review volume, with price and demand ranked against the category. Data-driven, not a hands-on test. Scored by Jake Torres, sports & outdoors editor.
Questions about the R1840AZ
Common buyer questions answered straight from the product spec data — no fluff, no "it depends".
Does the Mongoose Switch R1840AZ come with hand brakes?
No, it has a coaster (foot) brake only; hand brakes are not included on this model.
What is the recommended rider height for the Mongoose R1840AZ?
It fits riders 42 to 52 inches tall, appropriate for ages 5-7.
Are the training wheels removable on the Mongoose Switch?
Yes, the training wheels are removable to transition to riding without them.
What is the frame material of this Mongoose bike?
The frame is made of heavy-duty steel for strength and durability.
