Dynacraft Magna Major Damage Kids Bike
- 20 inch wheels, single speed
- Ages 6 to 10, minimum rider height 48 inches
- Coaster brake, rigid frame
- 25.08 lb, alloy steel frame
- Assembly required, kickstand included
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A single speed BMX style bike for young riders in the listed age range. The frame is alloy steel, so expect a heavier bike than lightweight kids models.
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ASIN: B09V8XSR9JCategory: Kids' Bikes
More from this brandAll Dynacraft kids' bikesOverview
A parent shopping for a first real bike gets a BMX build with a coaster brake, a rigid frame and an adjustable seat. The red finish and the kickstand add to a simple single speed layout.
The reason to consider it is the plain single speed setup with a coaster brake, so a young rider has nothing to shift or squeeze. The limitation is the weight of the alloy steel frame and the fact that it ships unassembled.
Who it's for
Kids in the listed age range who ride on pavement and driveways can use it with a coaster brake. Taller or younger riders should check the minimum height first, and anyone wanting hand brakes or gears should look elsewhere.
Pros and cons
- Single speed, nothing to shift
- Coaster brake stops by pedaling back
- Alloy steel frame and wheels
- Assembly is required
- Heavier steel frame
- No hand brakes listed
- Assembly tools not listed
Performance notes
A coaster brake engages when the rider pedals backward, so there are no brake levers to learn. The rigid frame has no suspension, and the single speed drivetrain makes pedaling simple on flat ground. Steel construction adds weight that a small rider feels on hills.
Specifications
| Brand | Dynacraft |
|---|---|
| Dimensions & fit | |
| Wheel Size | 20 incheshigher than 62% of 142 kids' bikes |
| Weight | 25.08 poundshigher than 63% of 49 kids' bikes |
| Minimum user height | 48 inches |
| Capacity & performance | |
| Age Range | 6 to 10 |
| Number of Speeds | 1 |
| Construction & materials | |
| Color | Red |
| Frame Material Type | Alloy steel |
| Included components | |
| Included components | Kickstand |
| Warranty & support | |
| Warranty description | Limited 1 year |
| Other details | |
| Brake Style | Coaster |
| Bike type | BMX bike |
| Suspension type | Rigid |
| Is Assembly Required | Yes |
Closest rivals on specs
Frequently asked questions
Does the Dynacraft Magna Major Damage arrive assembled?
No. The listing says assembly is required, and it does not list the tools or the steps.
What age is the Dynacraft Magna Major Damage for?
The age range is 6 to 10, with a minimum user height of 48 inches.
Does it have gears?
No. It is a single speed bike with one gear.