OBERSON BUYING GUIDE
How to Choose a Mountain Bike
Riding style, suspension, wheel size, frame material, and fit: Oberson’s experts break down the key factors in choosing the right mountain bike.
AT A GLANCE
How to Choose a Mountain Bike
To choose the right mountain bike, start by identifying your riding style: cross-country, trail, or enduro. This determines the type of bike best suited to your terrain. Then consider suspension, wheel size, frame material, and fit to refine your choice.
Which Type of Mountain Bike Should You Choose?
Choosing the right mountain bike starts by identifying your riding style. Cross-country, trail, enduro, and downhill bikes are designed for different terrain and riding preferences. Once you know how and where you ride, you can quickly narrow down the type of bike that best suits your needs.
| Type of mountain bike | Key features | Designed for |
|---|---|---|
| Cross-country (XC) | Lightweight, pedalling efficiency, short-travel suspension (100–120 mm) front or dual suspension, steeper geometry | Climbing, tight corners, speed, less technical trails, racing |
| Trail | Balanced geometry, moderate suspension (120–160 mm), versatile, capable performance | Riders who enjoy both climbs and descents |
| Enduro | Long travel (150–180 mm), slack geometry, stable at speed | Technical descents, steep terrain, jumps |
| Electric (e-MTB) | Pedal-assist motor, added weight, similar geometry and features to trail/enduro | Covering more distance, maximizing descent |
| Downhill | Very long travel (180–200 mm), built for descending only | Bike parks, lift-access terrain, steep technical descents |
Cross-Country (XC)
Choose a cross-country mountain bike if you prioritize climbing efficiency, speed, and long-distance riding on smoother trails. These bikes are lightweight, with steeper geometry for nimble handling and either front suspension (hardtail) or short-travel dual suspension for efficient power transfer.
Many modern cross-country bikes have become more capable on descents and technical sections. More progressive geometry and increased suspension travel make them more stable and confident on technical terrain than older XC models.
• Lightweight and efficient for climbing and acceleration
• Steeper geometry for precise handling
• Front suspension or short-travel dual suspension (100–120 mm)
• Ideal for smoother trails, racing, and long-distance riding
Trail
Opt for a trail bike if you want a versatile option that performs well on both climbs and descents.Trail bikes are a popular choice for fun everyday riding. They have moderate suspension travel (typically 120 mm to 160 mm) and balanced geometry that’s both maneuverable and up for some tough downhills. They offer comfort, stability, and responsiveness.
• Good for both climbing and descending
• Moderate suspension travel (120–160 mm)
• Stable yet responsive geometry
• Ideal for mixed terrain and recreational riding
Enduro
Go with an enduro mountain bike if you love descending on steep, technical terrain while still being
able to climb under your own power. These bikes are built for control and stability at speed.
They feature long suspension travel (typically 150 mm to 180 mm), slack geometry, and a longer wheelbase to handle rough trails, jump lines, and demanding descents. You won’t set any Strava KOMs, but low gearing lets you comfortably grind your way to the top.
• Long suspension travel (150–180 mm) for rough terrain
• Slack head tube angle and long wheelbase for stability
• Excellent control on steep, technical descents
• Ideal for aggressive riding, jumping, and challenging trails
Electric Mountain Bikes (e-MTB)
Choose an electric mountain bike if you want to cover more distance, go faster, climb more easily, or maximize your time on descents. These bikes combine trail or enduro geometry with a pedal-assist motor and battery.
• Pedal-assist motor for easier climbing
• Heavier but highly capable
• Available in trail and enduro configurations
• Ideal for longer rides and more vertical
Want to learn more? Our electric bike buying guide explains how pedal-assist systems, batteries, and motors work.
Downhill
Choose a downhill bike if you primarily ride lift-accessed bike parks and you’re all about bombing down the mountain. These bikes are not designed for climbing. With very long suspension travel and extremely slack geometry, they offer maximum stability and control at high speeds on steep, technical trails.
• Very long suspension travel (180–200 mm) for maximum impact absorption
• Extremely stable at high speeds
• Built for descending only
• Designed for lift-accessed bike parks
Should You Choose a Hardtail or Full-Suspension Mountain Bike?
Your choice between a hardtail and full-suspension mountain bike depends on your terrain, riding style, comfort preferences, and budget.
Hardtail
Opt for a hardtail mountain bike if you enjoy uphills and you’re seeking pedalling efficiency for smoother trails and doubletrack. With suspension in the front only and a rigid rear triangle, hardtails deliver direct power transfer and a more responsive feel. They’re usually the more budget-friendly choice.
• Lighter and more efficient for climbing
• Lower maintenance and generally more affordable
• Direct power transfer with no pedal bob
• Ideal for cross-country riding and less technical trails
Full Suspension
Choose a full-suspension mountain bike if you ride technical terrain or want more comfort and control on descents. With both front and rear suspension, these bikes absorb impacts and maintain better traction on uneven ground.
• Greater comfort and control on rough terrain
• Improved traction on climbs and descents
• More forgiving on rocks, roots, and technical sections
• Many cross-country and all trail, enduro, and downhill bikes are dual suspension
What Wheel Size and Tire Width Should You Choose for a Mountain Bike?
Wheel size and tire width affect how your bike rolls, handles obstacles, and feels on the trail. Today, 29-inch wheels come standard on most mountain bikes and are the best choice for most riders. Smaller 27.5-inch wheels are mainly used in specific cases, such as smaller frame sizes or for a more playful ride feel.
Wheel Size
29-Inch Wheels (Best for Most Riders)
Choose 29-inch wheels for the most efficient, stable, and confidence-inspiring ride. This is now the standard for adult cross-country, trail, and enduro bikes.
• Roll more easily over rocks and roots
• More stable at speed and on descents
• Better traction thanks to a larger contact patch
• More efficient for longer rides and varied terrain
27.5-Inch Wheels
Choose 27.5-inch wheels if you prioritize manoeuvrability, acceleration, or are riding a small or extra small frame size. They can feel more responsive and easier to handle in tight terrain. That said, these advantages have lessened with the improvement of 29ers’ geometry.
• Quicker acceleration and more responsive handling
• Nimble in tight turns
• Often used on smaller frame sizes (S, XS)
• Offers a playful ride feel
Mullet Setups (29″ Front/27.5″ Rear)
Some bikes combine a 29-inch front wheel with a 27.5-inch rear wheel to balance stability and agility, particularly on more aggressive trail and enduro bikes.
• Stability and control from the front wheel
• Increased manoeuvrability at the rear
• Available on some trail and enduro models
Tire Width
Choose your tire width based on how technical your terrain is and how much grip you want. Wider tires provide more traction and comfort, while narrower tires roll faster on smoother trails.
• 2.2″ to 2.4″ — Choose this for speed and efficiency (common on cross-country bikes)
• 2.4″ to 2.6″ — Best all-around option for most trail riders
• 2.6″ and above — Choose this for maximum grip and confidence on technical descents
Should You Choose an Aluminum or Carbon Mountain Bike Frame?
Choosing between aluminum and carbon comes down to your budget, weight priorities, and ride feel. Aluminum frames are durable and affordable, while carbon frames are lighter and better at absorbing vibrations.
Aluminum
Choose an aluminum frame if you want a durable, reliable, more affordable option. Aluminum bikes offer excellent performance for most riders and are widely used across all categories, from cross-country to enduro.
• More affordable than carbon
• Durable and resistant to impacts
• Slightly heavier than carbon
• Great value for most riders
Carbon
Choose a carbon frame if you prioritize weight savings, vibration damping, and a more refined ride feel. Carbon is lighter and can be engineered to offer specific performance characteristics.
• Lighter weight for improved efficiency
• Better vibration absorption for added comfort
• More expensive than aluminum
How Do You Choose the Right Size and Fit for a Mountain Bike?
Choosing the right size and fit is essential for comfort, control, and confidence on the trail. Even the best mountain bike won’t perform well if it doesn’t fit properly. Frame size, reach, and overall geometry all influence how a bike feels, so it’s important to choose a size that matches your height and riding preferences.
Frame Size
Choose your frame size based on your height and the manufacturer’s sizing chart. Most brands offer sizes such as XL, S, M, and L, but the exact fit can vary depending on the bike’s geometry.
• Follow the brand’s size chart as a starting point
• If you’re between sizes, consider your riding style:
o Smaller size for a more playful, maneuverable feel
o Larger size for more stability at speed
• Geometry differences between models can affect fit
Fit and Comfort
Choose a mountain bike that feels comfortable and natural.
• You should be able to stand over the bike comfortably
• Your position should feel stable without being stretched or cramped
• The bike should feel easy to handle in both seated and standing positions
Try Before You Ride
Trying different models is often the best way to find the right fit. Small differences in geometry, suspension, and sizing can significantly affect how a bike feels on the trail.
Test multiple sizes if possible
Pay attention to comfort, control, and confidence
Don’t rely on sizing alone—fit can vary between brands
Mountain Biking Gear and Essentials
Once you’ve chosen a mountain bike, the right gear can improve comfort, safety, and performance on the trail.
• Mountain bike helmet — Essential protection on all types of trails
• Gloves — Improve grip and protect your hands from impacts and abrasion
• Protective gear — Knee and elbow pads for added confidence on technical terrain
• Clothing — Breathable, durable apparel that allows freedom of movement; mountain bike shorts are typically worn with a liner that includes a chamois, which is an essential for comfort
• Hydration and tools — A hydration pack or bottle, along with basic repair tools for longer rides
FAQ — How to Choose a Mountain Bike
Find the answers to the most frequently asked questions about choosing a mountain bike.
What type of mountain bike should you choose?
Choose your mountain bike based on your riding style. Cross-country bikes are best for climbing and speed over rolling terrain, trail bikes are strong on both climbs and descents, and enduro bikes are designed for steep, technical descents and big jumps. For most riders, a trail bike is the best all-around option.
Can you use a mountain bike as a gravel bike?
Yes, you can use a mountain bike as a gravel bike. Cross-country mountain bikes excel on forest roads due to their stiff frame and short-travel suspension, which often can be locked out. However, they’re generally slightly slower than gravel bikes on smoother surfaces due to wider tires and suspension.
What is the best mountain bike for beginners?
The best mountain bike for beginners is usually a trail bike or a cross-country hardtail. Trail bikes offer the most versatility and are easy to handle on a wide range of terrain. Hardtail bikes are simpler, more affordable, and efficient for climbing. For most new riders, choosing a comfortable, well-fitting bike is more important than focusing on advanced features.
Should you choose flat or clipless pedals for mountain biking?
Flat pedals are the best choice for most beginners because they are easier to use and allow you to quickly put a foot down on technical terrain. They’re equipped with pins for a better grip on your shoes’ outsoles, so it’s easy to stay on them and transfer power to the cranks. Flat pedals are also popular among experienced riders, particularly in enduro riding.
Clipless pedals attach to a cleat under the shoe and offer a more direct connection to the bike. Opt for clipless pedals if you want improved pedalling efficiency and better control on technical terrain. However, keep in mind that they require an adjustment period and can take time to get used to. Many riders start with flat pedals and transition to clipless as they gain experience.
How much suspension travel should you choose for a mountain bike?
The right amount of suspension travel depends on the type of trails you ride and your riding style. Shorter travel (around 100 to 120 mm) is best for cross-country riding, where efficiency and climbing performance are priorities. Mid-range travel (120 to 160 mm) works well for trail riding, which focuses equally on uphill speed and downhill comfort and control. Longer travel (150 to 180 mm or more) is designed for enduro and downhill riding. It provides the impact absorption needed for steep, technical terrain and jumps.
Are mountain bikes good for long-distance rides?
Yes, they can be great for epic rides, depending on the type of mountain bike and the terrain. Cross-country bikes are the best option for long distances, especially modern models with around 120 mm of suspension front and rear. They’re designed for efficiency, speed, and climbing performance, making them well suited to racking up the kilometres.
Many trail bikes also work well for big outings if you want more comfort and capability on technical trails. Choose a lighter trail bike with moderate suspension travel and a geometry closer to a cross-country model to maintain efficiency while adding control and confidence on rougher sections.
Mountain Bikes at Oberson
Find the right mountain bike for your riding style
Whether you love flowy singletrack, technical trails, jump lines, or steep descents, the right mountain bike transforms your riding experience. Oberson offers a wide selection of mountain bikes from top brands for a broad range of riding styles, terrain, and skill levels. Need help choosing? Our specialists are here to guide you in-store and online so you can find a bike that fits your needs. Shop online or visit our Laval or Brossard stores to take a few bikes on some
test rides.
