Number of Speeds Explained: What It Means for Mountain Bikes

Number of speeds explained guide

The number of speeds explained refers to the total gear combinations available on your bike. This figure comes from multiplying the number of chainrings at the front by the number of cogs in the rear cassette. More speeds mean more options for matching your effort to the terrain. You can find values like 7-Speed, 12-Speed, or 21-Speed listed in product specs. A single-speed bike has only one gear ratio. This setup is simple and light but requires more physical effort on steep climbs.

How it works involves the derailleur system. The front derailleur moves the chain between chainrings. The rear derailleur shifts the chain across the cassette cogs. Each combination creates a unique gear ratio. Lower ratios make pedaling easier on hills. Higher ratios allow for faster speeds on flat ground or descents. A 14-Speed or 18-Speed bike offers a moderate range. A 24-Speed model provides a wide variety of choices for varied trails.

You will see these numbers labeled clearly on listing pages. Look for terms like "gears" or "speeds" in the specifications section. Some brands may list the number of chainrings and cogs separately. Multiply these two numbers to get the total. For example, two front chainrings and twelve rear cogs equal twenty-four speeds. This standard labeling helps you compare models quickly.

Why you care about this spec is comfort and control. Right gear selection reduces fatigue. It keeps your cadence steady on technical sections. If you ride steep trails, a wider range helps. A 7-Speed might suffice for flat parks. But a 12-Speed or 21-Speed offers better adaptability. Single-speed bikes appeal to riders who prefer simplicity. They have fewer parts to maintain. However, they lack the versatility for challenging terrain. Understanding this spec helps you choose the right bike for your riding style.

Speed Options Compared

21-Speed

This configuration offers a wide range of gear combinations, typically using a triple chainring setup. It allows you to climb steep hills with ease and maintain speed on flats. The Glerc 24-Inch Skyline Kids Mountain Bike uses this setup to help young riders navigate varied terrain. It suits beginners who need versatility without complex shifting patterns. The trade-off is added weight and mechanical complexity. More parts mean more maintenance. However, the wide range covers most casual trail needs effectively for growing riders.

7-Speed

A 7-speed bike provides basic gearing for gentle trails and flat paths. It is simple to operate and maintain. The Mongoose Flatrock 26-Inch Mountain Bike exemplifies this approach with its straightforward drivetrain. It suits casual riders who prioritize durability over performance. You get fewer gear options, which limits your ability to tackle steep climbs or high-speed descents efficiently. This setup is ideal for beginners learning to ride or those using the bike for light exercise on paved surfaces rather than technical off-road trails.

12-Speed

Twelve speeds offer tight gear spacing and a broad range, ideal for serious trail riding. The SAVADECK Full Suspension Carbon Mountain Bike uses this setup for precise shifting on rough terrain. It suits riders who need to adjust cadence quickly on technical climbs and descents. The trade-off is higher cost and delicate components. Modern 12-speed systems are lightweight but require careful maintenance. This spec is best for enduro or trail enthusiasts who demand reliable performance in challenging conditions without sacrificing weight.

18-Speed

Eighteen speeds provide a balanced range for moderate off-road use. The WEIZE 26-Inch Dual Suspension Mountain Bike features this count to help riders manage varied gradients. It suits beginners seeking comfort on rough trails with full suspension support. The gearing allows for easier climbing and faster descending than lower-speed bikes. However, the steel frame adds weight, offsetting some benefits. This setup is practical for riders who want more versatility than a 7-speed but do not need the complexity of high-end 12-speed systems.

24-Speed

Twenty-four speeds typically indicate a triple chainring and multi-cassette setup, offering extensive gearing options. The DEYGIA 24-Speed Hybrid Bike uses this for paved commuting and light gravel. It suits riders who prioritize speed and efficiency on hard surfaces. This spec is not ideal for technical mountain biking due to frame geometry and tire width. The trade-off is limited off-road capability. You get excellent range for flats and gentle hills, but the bike lacks the stability and suspension needed for serious trail riding or rocky paths.

14-Speed

Fourteen speeds offer a moderate range suitable for urban commuting and paved roads. The HH Hiland 700c Aluminum Road Bike uses this setup for city riding. It suits commuters who need efficiency on hard surfaces. The gearing is sufficient for moderate inclines but not for steep mountain climbs. This spec is not built for technical off-road riding. The trade-off is limited versatility on rough terrain. You gain speed and efficiency on pavement but lose the ability to handle trails, rocks, or uneven ground effectively.

Is More Speed Always Better?

Who needs it

You should prioritize a higher number of speeds if you tackle varied terrain regularly. Riders who switch between steep climbs, flat trails, and technical descents benefit from the granular adjustments that multiple gear combinations provide. A setup with twenty-one or twenty-four speeds offers a broad range, allowing you to maintain an efficient cadence without overexerting yourself on inclines or spinning out on downhills. This versatility is crucial for mountain bikers who encounter diverse elevation changes in a single ride. The ability to fine-tune your effort helps conserve energy and improves control. If your riding style involves long distances or unpredictable trails, having more options ensures you can match your output to the conditions precisely, making the ride smoother and less fatiguing over time.

Who can skip it

You can ignore high speed counts if you ride on consistent, flat terrain or prefer simplicity. A single-speed bike eliminates mechanical complexity, reducing maintenance needs and weight. For urban commuters or casual trail riders who do not face significant elevation changes, fewer gears are sufficient. The added weight and potential for mechanical issues with complex drivetrains may outweigh the benefits in these scenarios. Prioritize frame durability, tire quality, and suspension performance instead. These factors directly impact comfort and control more than gear variety. If you value low upkeep and straightforward operation, a simpler drivetrain is a practical choice. Focus on components that enhance stability and ride quality, rather than chasing a higher number of theoretical gear combinations that you may rarely use.

Key Speed Terms

Chainring

The toothed gear attached to your crank arm. Front chainrings work with rear cogs to determine your overall gear ratio and pedaling effort.

Cassette

The cluster of sprockets mounted on your rear wheel hub. The number of cogs in the cassette directly influences your total available speed combinations.

Gear Ratio

The relationship between front chainring teeth and rear cog teeth. This ratio dictates how many wheel rotations occur per single pedal stroke.

Triple Setup

A front drivetrain configuration using three chainrings. This setup typically generates higher total speed counts, such as twenty-one speeds, for varied terrain.

Drivetrain

The collection of components that transfer power from your pedals to the rear wheel. This includes chainrings, the chain, shifters, and the rear cassette.

Pedal Stroke

One complete rotation of your cranks. Your gear selection determines how far the bike travels forward during each individual pedal stroke.

Quick picks

Our 6 picks

1

Glerc 24-Inch Skyline Kids Mountain Bike

Best for: young riders needing durable off-road gear

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 mountain bike features a 21-speed drivetrain and front suspension, designed for kids aged 6 to 10. The high carbon steel frame provides durability for off-road use, while disc brakes offer reliable stopping power. It suits children between 53 and 66 inches tall. The 21-speed setup allows you to adjust gear ratios for varied terrain, making it a versatile option for young riders exploring trails or parks.

Pros

• 21-speed drivetrain for versatile gear options
• Front suspension absorbs trail shock
• Responsive disc brakes for precise control
• High carbon steel frame for durability

Cons

• Heavy 34 lb weight due to steel frame
• Limited to front suspension only
• Smaller 24-inch wheel size for younger riders

Good fit if

• You need a bike for a child aged 6 to 10
• You want reliable disc brakes for safety
• You prefer a durable steel frame for rough use

Skip if

• You need a lightweight aluminum frame for speed
• You require a full-suspension bike for technical trails
• You are looking for a bike for an adult rider

Verdict: Glerc 24-Inch Kids Mountain Bike offers a sturdy build and 21-speed versatility for young riders. It fits children aged 6 to 10 who need durable equipment for off-road exploration.

2

Mongoose Flatrock 26-Inch Mountain Bike

Best for: beginners on gentle to moderate trails

Number of Speeds

7-Speed (what this guide is about)

Wheel Size

26 inch

Suspension Type

Front suspension

Frame Material

Aluminum

Brake Type

Linear pull brakes

Target Audience

Adult and teen, men and women

View on Amazon: Mongoose Flatrock 26-Inch Mountain Bike Affiliate link

The Mongoose Flatrock is a hardtail mountain bike with 26-inch wheels and a 7-speed drivetrain. It features an aluminum frame and front suspension for trail comfort. Linear pull brakes provide stopping power. This model suits riders between 5'4" and 6'2". It is a practical entry-level option for off-road exploration and casual trail riding.

Pros

• Aluminum frame keeps weight manageable at 42.2 pounds
• 7-speed twist shifters offer gear variety for terrain
• Front suspension absorbs bumps on uneven ground
• 26-inch wheels fit riders from 5'4" to 6'2"

Cons

• Linear pull brakes lack the stopping power of disc brakes
• Front suspension only, lacking rear shock absorption
• 7-speed drivetrain has fewer gear options than modern 12-speed bikes

Good fit if

• You are a beginner looking for a simple, durable trail bike
• You prefer the stability of 26-inch wheels
• You want a lightweight aluminum frame for easier handling

Skip if

• You need high-performance disc brakes for steep descents
• You require a full-suspension setup for rough terrain
• You want a wide-range 12-speed drivetrain for technical climbs

Verdict: Mongoose Flatrock 26-Inch 7-Speed is a solid, no-frills mountain bike for casual riders who value simplicity and durability over high-end components.

3

SAVADECK Full Suspension Carbon Mountain Bike

Best for: Technical trail riding and enduro style

Number of Speeds

12-Speed (what this guide is about)

Wheel Size

27.5"

Suspension Type

Full suspension

Frame Material

Carbon fiber

Brake Type

Four-piston hydraulic disc

Tire Width

2.4"

View on Amazon: SAVADECK Full Suspension Carbon Mountain Bike Affiliate link

This SAVADECK mountain bike features a carbon fiber full-suspension frame with a dual-link rear triangle. It uses a Shimano DEORE M6100 12-speed groupset for reliable shifting on technical trails. The bike includes a DNM air shock with hydraulic lockout and four-piston hydraulic disc brakes. It rolls on 27.5-inch wheels with 2.4-inch Continental tires. This setup suits riders seeking stability and precise control on rough terrain.

Pros

• Carbon fiber frame reduces overall weight
• Shimano DEORE M6100 12-speed shifting
• DNM air shock with three-stage lockout
• Four-piston hydraulic disc brakes for stopping power
• 2.4-inch Continental all-terrain tires

Cons

• Carbon frame requires careful handling to avoid damage
• No mention of integrated dropper post compatibility
• 27.5-inch wheels may feel less stable at high speeds than 29-inch options

Good fit if

• You ride technical trails with roots and rocks
• You prefer lightweight carbon frames for climbing
• You want precise shifting with a 12-speed groupset

Skip if

• You need a budget-friendly aluminum frame
• You prefer 29-inch wheels for rollover capability
• You ride primarily on paved roads or smooth paths

Verdict: SAVADECK Carbon Full-Suspension MTB is a capable trail bike for riders who value lightweight carbon construction and advanced suspension tuning. It fits those who tackle rough terrain and want reliable 12-speed shifting performance.

4

WEIZE 26-Inch Dual Suspension Mountain Bike

Best for: beginners seeking comfort on rough trails

Number of Speeds

18-Speed (what this guide is about)

Wheel Size

26 Inch

Suspension Type

Dual suspension

Frame Material

High-carbon steel

Brake Type

Front and rear V-brakes

Target Audience

Adults

View on Amazon: WEIZE 26-Inch Dual Suspension Mountain Bike Affiliate link

This WEIZE mountain bike offers 18 speeds via twist shifters and dual derailleurs, letting you adjust cadence for varied terrain. The high-carbon steel frame pairs with front and rear suspension to smooth out bumps. Linear pull brakes provide stopping power. It fits riders 5'2" to 6'2". The 26-inch tires handle outdoor paths well. This setup suits adults seeking a durable, full-suspension ride.

Pros

• 18-speed twist shifter system for gear adjustment
• Dual suspension with front fork and rear coil shock
• High-carbon steel frame for durability
• Linear pull brakes on both wheels

Cons

• Linear pull brakes offer less stopping power than disc brakes
• Steel frame is heavier than aluminum or carbon options
• No remote lockout mentioned for the front suspension fork

Good fit if

• You want full suspension for comfort on bumpy trails
• You prefer the durability of a steel frame
• You are between 5'2" and 6'2" tall

Skip if

• You need lightweight aluminum or carbon construction
• You require hydraulic disc brakes for wet conditions
• You are under 5'2" or over 6'2" tall

Verdict: WEIZE 26 Inch 18-Speed Steel MTB fits riders who prioritize comfort and durability over weight savings. It is a solid choice for beginners navigating rough paths who value full suspension.

5

DEYGIA 24-Speed 700C Hybrid Bike

Best for: paved road commuting and light gravel

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

This DEYGIA hybrid bike offers 24 speeds via a 3x8 drivetrain, giving you a wide range for varied terrain. It features 700c wheels with 32c tires to reduce rolling resistance on flats and gravel. The carbon steel frame provides stability, while dual disc brakes ensure reliable stopping power. Internal wiring keeps the design clean. It suits adults seeking a versatile commuter for city streets and light outdoor paths.

Pros

• 24-speed 3x8 drivetrain for precise shifting
• 700c wheels reduce rolling resistance
• Dual disc brakes for sensitive stopping
• Internal wiring reduces wind resistance

Cons

• Carbon steel frame is heavier than aluminum
• 700c wheels are less stable on rough trails
• No suspension for absorbing bumps

Good fit if

• You commute on paved roads
• You ride on gravel paths
• You want low maintenance internal wiring

Skip if

• You ride on technical mountain trails
• You need a lightweight aluminum frame
• You require front suspension for comfort

Verdict: DEYGIA 24-Speed Hybrid Bike is a stable option for riders who prioritize gearing range and braking power over off-road capability. It fits those who stick to pavement and smooth gravel.

6

HH Hiland 700c Aluminum Road Bike

Best for: city commuting and paved road riding

Number of Speeds

14-Speed (what this guide is about)

Wheel Size

700c

Frame Material

aluminium

Brake Type

dual caliper brakes

Target Audience

Men Women

Size

Medium

View on Amazon: HH Hiland 700c Aluminum Road Bike Affiliate link

This HH Hiland road bike features a 14-speed drivetrain and 700c wheels. The aluminum frame keeps the weight at 26.4 pounds. Dual caliper brakes provide stopping power. The 700c wheels offer low rolling resistance and better rollover for city streets or gravel. It suits riders between 5'6" and 6'4" who want efficient commuting.

Pros

• 14-speed derailleur drivetrain for varied terrain control
• 700c wheels reduce rolling resistance and improve efficiency
• Dual caliper brakes offer stable and powerful stopping force
• Lightweight aluminum frame enhances speed and durability

Cons

• Caliper brakes are heavier and less powerful than disc brakes in wet conditions
• 700c wheels are not suitable for off-road mountain biking trails
• Requires assembly as it is 85% pre-assembled

Good fit if

• You commute on paved city streets or smooth gravel paths
• You prefer the efficiency of larger 700c wheels over smaller mountain bike sizes
• You want a lightweight aluminum frame for faster acceleration

Skip if

• You need heavy-duty suspension for rough mountain trails
• You require hydraulic disc brakes for maximum wet-weather stopping power
• You are outside the 5'6" to 6'4" height range for the Medium size

Verdict: HH Hiland 14-Speed 700c Road Bike fits urban commuters who prioritize speed and efficiency on hard surfaces. It is not built for technical off-road riding.

Specifications side by side

Frequently asked questions

See also

• 21-Speed vs 7-Speed mountain bike
• 21-Speed vs 18-Speed mountain bike
• sewing speed explained
• number of sounds explained