Dynacraft Magna Major Damage 20" BMX Kids Bike, Single-Speed with Coaster Brake
- Kids' Bike
- 20 in
- 6-10 years
- Coaster
- Better rated than 64%
- More reviewed than 93%
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The Dynacraft Magna Major Damage (model 8114-99) is a single-speed BMX-style bike designed for children aged 5-9 with a 20-inch wheel size. It features a durable steel frame, coaster brake for easy stopping, and an adjustable seat to grow with your child. Ideal for riding on gravel, road, or trail as they learn and gain confidence.
- Single-speed drivetrain with coaster brake for simple, intuitive stopping
- 20-inch wheels with rigid suspension suited for gravel, road, and trail
- Adjustable seat accommodates growing riders for extended use
- Sturdy steel frame with a bold red finish and BMX styling
| Brand | Dynacraft |
| Model | 8114-99 |
| Wheel Size | 20 in |
| Age Range | 6-10 years |
| Brake Style | Coaster |
| Frame Material | Alloy Steel |
| Number of Speeds | 1 |
| Color | Red |
| Weight | 25.08 lbs |
Easy to assemble and sturdy, this bike is a great value for young riders learning to balance. Bright colors and coaster brakes receive praise from grandparents and parents alike.
- Children learning to ride
- Quick assembly by grandparents
- Durable beginner bike
Some units arrive with front wheel fitting issues, and training wheels may wear out quickly. Customer service responsiveness is a concern.
- Front wheel fitting issue
- Training wheels wear quickly
- Poor customer service
How it ranks among the 150 kids' bikes we track
4.5★ across 3,100 Amazon reviews, weighted by review volume.
Cheaper than 50% of the kids' bikes we track.
More reviewed than 93% 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 Dynacraft 8114-99
Common buyer questions answered straight from the product spec data — no fluff, no "it depends".
Does the Dynacraft Magna Major Damage 8114-99 come partially assembled?
Yes, it requires some assembly; most components are pre-assembled, and a tool is included for basic setup.
What is the recommended age for this bike?
The 20-inch wheel size is typically for children ages 5-9, depending on height.
Does it have hand brakes or a coaster brake?
It uses a coaster brake (pedal backward to stop) for simplicity and safety for young riders.
Is the Dynacraft Magna Major Damage suitable for off-road use?
Yes, it is designed for gravel and trail riding, but the rigid suspension and knobby tires handle light off-road conditions.
