Ready to hear the exhilarating crunch of off-road trail rocks, brush, or gravel under your tires? You’ll have to pedal your way to the best-kept sights on a properly fitting mountain bike.
In our complete guide, we'll walk you through the ins and outs of finding the perfect size mountain bike. From understanding the impact of your riding style and torso length on the fit to exploring key considerations, we've got you covered!
Shopping for a mountain bike and don’t know where to start? Knowing your height is essential when determining the proper mountain bike size for you.
Locate your height on our unisex/men’s mountain bike size chart below. This will give you a great starting point whether you’re shopping online or in person.
Rider Height (in) | Rider Height (cm) | Frame Size | Frame Size (in) | Frame Size (cm) |
4'10" - 5'2" | 148 - 158 | XS | 13" - 14" | 33-37 |
5'2" - 5'6" | 158 - 168 | S | 15" - 16" | 38-42 |
5'6" - 5' 10" | 168 - 178 | M | 17" - 18" | 43-47 |
5'10" - 6'1" | 178 - 185 | L | 19" - 20" | 48-52 |
6'1" - 6'4" | 185 - 193 | XL | 21" - 22" | 53-57 |
6'4" - 6'6" | 193 - 198 | XXL | 23" - 24" | 58-61 |
Women’s mountain bikes typically feature smaller frames and narrower handlebars tailored to fit the needs of shorter riders. Use our mountain bike size chart for women below. But don’t forget to check the manufacturer’s sizing specifications for more clarity.
Rider Height (in) | Rider Height (cm) | Frame Size | Frame Size (in) | Frame Size (cm) |
4'10" - 5'2" | 148 - 158 | XS | 13" - 14" | 33-37 |
5'2" - 5'6" | 158 - 168 | S | 15" - 16" | 38-42 |
5'6" - 5' 10" | 168 - 178 | M | 17" - 18" | 43-47 |
5'10" - 6'1" | 178 - 185 | L | 19" - 20" | 48-52 |
When it comes to mountain bikes, most manufacturers offer frame sizes categorized as small, medium, and large. These sizes can be adjusted further by modifying the seat height or angle to ensure a better fit. You’ll find they also come in various shapes.
You can test-ride different sizes in-store. That way you can personally experience any variations and determine the most suitable option for your needs with confidence.
Each brand typically has its own sizing charts that you should consult before making a purchase.
If you find yourself in-between sizes, opting for the smaller size is generally recommended.
Understanding the geometry of a mountain bike and the various measurements can provide valuable insights to help you find the perfect fit for your riding style and body proportions. Explore these factors so you can make the best call when shopping for a mountain bike.
Reach helps to determine the overall feel of a mountain bike. This measurement represents the horizontal distance from the center of the bottom bracket to the center of the head tube.
The effective top tube measurement of a mountain bike refers to the horizontal distance between the center of the head tube and the center of the seat post.
The standover height refers to the measurement from the ground to the top tube of the bike when you're standing in front of the seat.
Your seat height on a mountain bike should accommodate comfort and performance. To get the perfect seat height, follow our recommendations:
On steep descents, choose to lower the saddle. This adjustment enhances control and allows for better weight distribution. It also lowers your center of gravity. Both improve your overall stability and maneuverability on challenging terrains.
Mountain bike wheel sizes play a significant role in the overall performance and characteristics of the bike. The 26-inch wheel size is standard; however, 27.5 inches and 29 inches are both gaining popularity.
27.5 vs. 29 Mountain Bike Wheel Size | |||||
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Wheel Size | Best Suited For | Strengths | Weaknesses | ||
27.5 in. | Beginners |
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29 in. | Those who like a stable and planted feel |
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The head tube angle refers to the angle between the front fork of the bike and the ground. Most mountain bikes have a head tube angle ranging from 66-68 degrees. Evaluate the head tube angle based on your riding preferences and the type of terrain you'll be tackling.
The chainstay length of a mountain bike refers to the distance between the center of the bottom bracket and the center of the rear axle. The choice between shorter and longer chainstays ultimately comes down to personal preference and riding style:
Riders who prioritize agility and playful maneuvering may prefer shorter chainstays, while those seeking enhanced stability and confidence might opt for longer chainstays.
The bottom bracket height of a mountain bike is determined by the distance from the ground to the center of the bottom cranks. Riders should consider the specific terrain they'll be riding on and their skill level to determine the ideal bottom bracket height for their mountain bike.
The wheelbase of a mountain bike refers to the measurement between the front and rear axles.
Ready to take on those challenging mountain trails? Shop our selection of men's mountain bikes and women's mountain bike — available in a range of brands, price points, and styles. Conquer jumps, rough terrain, and steep inclines. Have the adventure of a lifetime on your mountain bike!