21-Speed or 24-Speed Mountain Bikes? Compared by Specs
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Choosing between a 21-Speed vs 24-Speed mountain bike depends on your rider and terrain. Both bikes feature carbon steel frames and disc brakes for reliable stopping power. The Glerc Skyline is a 24-inch kids bike with front suspension, designed for young riders on trails. The DEYGIA is a 700c adult hybrid with dual disc brakes, built for smooth road and gravel commuting. Your choice hinges on age, wheel size, and intended use.
Key differences
| Aspect | Glerc 24-Inch Skyline Kids Mountain Bike | DEYGIA 24-Speed 700C Hybrid Bike |
|---|---|---|
| Number of Speeds | 21-Speed | 24-Speed |
| Target Audience | Kids (ages 6-10) | Adults |
| Wheel Size | 24 inch | 700c |
| Suspension Type | Front suspension | Hardtail (not listed) |
| Brake Type | Disc brakes | Dual disc brakes |
| Frame Material | High carbon steel | Carbon steel |
Which one should you choose?
Choose Glerc 24-Inch Skyline Kids Mountain Bike if
- You need a bike for a child aged 6 to 10.
- You want front suspension for off-road trail comfort.
- You prefer smaller 24-inch wheels for easier handling.
Choose DEYGIA 24-Speed 700C Hybrid Bike if
- You are an adult rider looking for a hybrid bike.
- You want 24 speeds for versatile road and gravel riding.
- You prefer dual disc brakes for enhanced stopping power.
Verdict: The Glerc Skyline is the clear choice for young riders needing a sturdy, suspended mountain bike. The DEYGIA suits adults who want a faster, road-oriented hybrid with more gears. Pick based on rider age and terrain, not just speed count.
21-Speed vs 24-Speed Specs
Number of speeds
The DEYGIA Hybrid Bike offers a 24-speed drivetrain, configured as a 3x8 system. This setup provides a wider range of gear ratios, allowing for precise shifting on steep climbs and fast descents. The Glerc Skyline Kids Bike features a 21-speed drivetrain. While it has fewer total combinations, it still offers versatile speed options to tackle diverse terrains. The extra three speeds on the DEYGIA model give adult riders more fine-tuned control over their cadence and effort levels across varied road conditions.
Target audience
These bikes serve completely different rider demographics. The Glerc Skyline is explicitly designed for kids, boys, and girls ages 6 to 10. It is built with a 24-inch wheel size to fit children who are 53 to 66 inches tall with an inseam between 24 and 29 inches. The DEYGIA Hybrid Bike is intended for adults, including men and women. It comes in adult sizes S and M, accommodating riders from 5 feet 1 inch to 6 feet 1 inch. You must choose based on whether the rider is a child or an adult.
Suspension type
The Glerc Skyline includes a front suspension fork. This feature absorbs shock and vibration from rough terrain, which greatly improves comfort and maneuverability for young riders on trails. The DEYGIA Hybrid Bike data does not list any suspension system. It relies on its 700x32c tires and frame geometry for ride quality. If you need shock absorption for uneven ground or off-road use, the Glerc’s front suspension is a significant advantage. For smooth paved surfaces, the lack of suspension on the DEYGIA is standard.
Brake type
Both bicycles utilize disc brakes for stopping power. The Glerc Skyline features responsive disc brakes that provide precise control and maintain performance in adverse conditions. The DEYGIA Hybrid Bike is equipped with dual disc brakes on both the front and rear wheels. This dual setup offers a sensitive braking response for safer riding. While both use disc brakes, the DEYGIA explicitly highlights the dual configuration for enhanced safety and control during long-distance commuting or urban riding.
Frame material
Both bikes are constructed using carbon steel for their frames. The Glerc Skyline uses a high carbon steel frame, providing a sturdy foundation that can handle the challenges of off-road adventures. The DEYGIA Hybrid Bike also features a carbon steel frame, described as lightweight and durable for lasting stability. While both materials offer similar strength and durability characteristics, the Glerc emphasizes its sturdiness for rugged use, whereas the DEYGIA focuses on lightweight properties for efficient commuting. The core material choice is identical.
Which bike fits your needs?
Parent buying for a child ages 6 to 10
The Glerc Skyline is built for young riders. Its 24-inch wheels and front suspension absorb trail bumps. The 21-speed drivetrain handles varied terrain. High carbon steel frames offer durability. This model suits kids aged six to ten, ensuring a safe and comfortable ride on local paths.
Adult commuter seeking versatile road performance
The DEYGIA Hybrid Bike features 700c wheels for lower rolling resistance. Its 24-speed 3x8 drivetrain covers daily cycling needs. Dual disc brakes provide sensitive stopping power. The upright geometry reduces fatigue. This adult-focused bike is ideal for commuting, park rides, and flat road travel.
Rider prioritizing gear range and braking
You need precise shifting and strong stops. The DEYGIA offers 24 speeds for steep climbs. Dual disc brakes ensure safety. Its carbon steel frame provides stability. The 32c tires smooth out gravel. This setup delivers reliable performance for adults navigating mixed surfaces with confidence and control.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Glerc 24-Inch Skyline Kids Mountain Bike | Young riders needing durable steel frames | Check price of Glerc 24-Inch Skyline Kids Mountain Bike on Amazon |
| 2 | DEYGIA 24-Speed 700C Hybrid Bike | Adult commuters on paved surfaces | Check price of DEYGIA 24-Speed 700C Hybrid Bike on Amazon |
The products compared
Glerc 24-Inch Skyline Kids Mountain Bike
Best for: Young riders needing durable steel frames
- Number of Speeds
- 21-Speed (what this guide is about)
- Wheel Size
- 24"
- Suspension Type
- Front suspension
- Frame Material
- High carbon steel
- Brake Type
- Dual disc
- Target Audience
- Kids, boys and girls ages 9-15
View on Amazon: Glerc 24-Inch Skyline Kids Mountain Bike Affiliate link
This Glerc kids mountain bike features a 21-speed drivetrain and 24-inch wheels, designed for riders aged 6 to 10. It uses a high carbon steel frame and front suspension to handle rough terrain. The disc brakes offer reliable stopping power. It fits children between 53 and 66 inches tall with an inseam of 24 to 29 inches. The bike weighs 34 pounds, providing a sturdy base for young riders.
Pros
- 21-speed drivetrain for versatile terrain handling
- Responsive disc brakes for precise control
- Front suspension absorbs shock from rough trails
- High carbon steel frame offers durability
Cons
- High carbon steel frame adds weight compared to aluminum
- Only front suspension, lacking rear shock absorption
- Limited to 24-inch wheel size for this model
Good fit if
- You need a bike for a child aged 6 to 10
- Your child is between 53 and 66 inches tall
- You want disc brakes for better stopping power
Skip if
- You are buying for an adult rider
- You prefer a lightweight aluminum frame
- You need full suspension for extreme trails
Verdict: Glerc 24-Inch 21-Speed Kids Bike suits young riders needing durable steel construction and reliable braking. It is ideal for beginners mastering off-road skills on varied terrain.
DEYGIA 24-Speed 700C Hybrid Bike
Best for: Adult commuters on paved surfaces
- Number of Speeds
- 24-Speed (what this guide is about)
- Wheel Size
- 700c
- Frame Material
- Carbon steel
- Brake Type
- Dual disc brakes
- Tire Width
- 32c
- Target Audience
- Adults (men, women)
View on Amazon: DEYGIA 24-Speed 700C Hybrid Bike Affiliate link
The DEYGIA 24-Speed Hybrid Bike uses a carbon steel frame and 700c wheels for stable commuting. It features a 3x8 drivetrain for precise shifting on varied terrain. Dual disc brakes offer reliable stopping power. Internal wiring keeps the look clean. This adult bicycle suits riders between 5'1" and 6'1" who want a versatile ride for parks or flat roads.
Pros
- 24-speed 3x8 drivetrain for versatile gearing
- Dual disc brakes for sensitive response
- 700c x 32c tires reduce rolling resistance
- Internal wiring for a clean aesthetic
- Carbon steel frame for lasting stability
Cons
- Carbon steel frame is heavier than aluminum
- 700c wheels limit suitability for small riders
- Hybrid geometry is not for technical trails
Good fit if
- You want a 24-speed bike for paved roads
- You prefer internal cable routing for maintenance
- You need dual disc brakes for safety
Skip if
- You ride on rough mountain trails
- You are under 5'1" tall
- You want a lightweight aluminum frame
Verdict: The DEYGIA 24-Speed Hybrid Bike is a solid option for adults seeking a durable, versatile commuter. It fits riders who prioritize braking power and clean aesthetics over off-road capability.
Specifications side by side
| Spec | Glerc 24-Inch Skyline Kids Mountain Bike | DEYGIA 24-Speed 700C Hybrid Bike |
|---|---|---|
| Wheel Size | 24" | 700c |
| Suspension Type | Front suspension | not stated |
| Frame Material | High carbon steel | Carbon steel |
| Brake Type | Dual disc | Dual disc brakes |
| Number of Speeds | 21-speed | 24-speed |
| Tire Width | not stated | 32c |
| Target Audience | Kids, boys and girls ages 9-15 | Adults (men, women) |
| Size | 24 Inch | Size S (50cm) |
| Color | Blue | Light Blue |
| Model | BG1033A24blu | not stated |
Frequently asked questions
Is 21 or 24 speeds better for kids?
A 21-speed setup is often sufficient for young riders. The Glerc Skyline Kids Bike uses a 21-speed drivetrain to handle varied terrain. This range allows beginners to manage climbs and flat trails without overwhelming complexity. The focus remains on durable steel construction and reliable braking for safe learning.
Does more speed mean faster riding?
More speeds do not automatically mean faster riding. They provide a wider range of gear ratios. The DEYGIA bike offers 24 speeds for precise shifting on steep climbs. This helps maintain optimal cadence. However, top speed depends on rider strength and terrain, not just the number of gears available.
Can a 24-speed bike be used off-road?
It depends on the frame and tires. The DEYGIA bike is a hybrid designed for paved surfaces. Its 24-speed system prioritizes commuting efficiency over off-road capability. For trails, a mountain bike with suspension, like the Glerc Skyline, offers better control. Choose based on your primary riding surface.
What is the difference in gear range?
A 24-speed bike typically uses a 3x8 configuration. This provides more gear combinations than a 21-speed setup. The DEYGIA hybrid benefits from this wider range for varied pavement. The Glerc kids bike uses 21 speeds. This simpler range is adequate for young riders mastering basic off-road skills on gentle trails.
Is a 21-speed drivetrain too simple?
No, 21 speeds are not too simple for many riders. The Glerc Skyline Kids Bike proves this. Its 21-speed system handles varied terrain effectively. It offers enough options for climbing and coasting. For adults on pavement, 24 speeds offer finer adjustments. For children, 21 speeds provide durability and ease of use.
Do I need 24 speeds for commuting?
You do not strictly need 24 speeds, but they help. The DEYGIA hybrid bike uses 24 speeds for versatile commuting. This allows precise gear changes on hills. If your route is flat, fewer speeds may suffice. The 24-speed setup ensures you can maintain a steady pace across different road conditions.