MTB bike Specialized Rockhopper Expert – Performance and fun on the trails
The Specialized Rockhopper Expert is a hardtail mountain bike designed to deliver high performance on trails without compromising on price. The result of over 30 years of experience developing accessible yet capable bikes, this MTB combines a lightweight aluminum frame, reliable components, and modern geometry to ensure control, efficiency, and fun on any off-road route.
The heart of the Rockhopper Expert is the Premium A1 Aluminum frame, lightweight yet durable, designed with butted and hydroformed tubes to keep weight low without sacrificing stiffness and longevity. The updated geometry improves stability and riding confidence, while internal cable routing and compatibility with a dropper post enhance the bike’s clean look and functionality.
The RockShox Judy Solo Air fork effectively absorbs terrain bumps, while the Shimano hydraulic disc brakes provide powerful and controllable stopping power. Completing the package is the Shimano Deore 1x11 drivetrain, reliable and with a wide gear range to tackle tough climbs and fast sections.
Designed to fit every rider
To offer optimal fit and handling, Specialized matched each Rockhopper frame size with the most suitable wheel size. This ensures a balanced and responsive ride for every cyclist, regardless of height.
Reliable components for off-road
The Rockhopper Expert is designed to offer the perfect balance of strength, lightness, and durability, thanks to quality components:
RockShox Judy Solo Air fork with size-specific travel
Shimano BR-MT200 hydraulic disc brakes, powerful and controllable
Shimano Deore 1x11 drivetrain with a wide gear range
Tubeless-ready rims with 25 mm internal width, sturdy and high-performing
Specialized Ground Control 2BR tires ideal for trail riding
The result is a versatile hardtail MTB, perfect for starting out in mountain biking or for those looking for a reliable bike for rides and trails.
Technical Specifications
Frame
-
Frame: Specialized A1 Premium conical alloy, zero-stack head tube, internal cable routing, forged 135x9 mm dropouts, disc brake mounted on horizontal stay, replaceable alloy derailleur hanger, stealth rack mounts, compatible with dropper seatpost
-
Seatpost collar: Alloy, quick release, 34.9 mm
Suspension
-
Fork: RockShox Judy, Solo Air, Turnkey cartridge, 46 mm offset, quick release (QR), 80/90/100 mm travel depending on frame size, alloy steerer tube
Brakes
-
Front brake: Shimano BR-MT200, hydraulic disc brake, 160/180 mm rotor
-
Rear brake: Shimano BR-MT200, hydraulic disc brake, 160 mm rotor
Drivetrain
-
Shifters: Shimano Deore M5100, 11-speed
-
Rear derailleur: Shimano Deore M5100, SGS cage, 11-speed
-
Cassette: Shimano Deore, 11-speed, 11-51 teeth
-
Chain: Shimano CN-LG500 with Quick-Link
-
Crankset: Stout 1x, forged alloy
-
Bottom bracket: Square-taper, 73 mm, sealed bearings, 122.5 mm axle
Wheels
-
Rims: Specialized Alloy, hookless, tubeless ready, 25 mm internal width
-
Front hub: Formula DC-20, 6-bolt disc mount, 100x9 mm dropout, quick release
-
Rear hub: Formula DC-22, 6-bolt freehub body, 135x9 mm dropout, quick release
-
Spokes: Stainless steel, 14g
Tires
-
Front tire: Specialized Ground Control 2BR, 650B/29x2.35, T5 compound
-
Rear tire: Specialized Ground Control 2BR, 650B/29x2.35, T5 compound
-
Inner tubes: Presta valve 40 mm, 650B/29x1.75-2.4
Cockpit
-
Stem: Stout, 3D forged alloy, 31.8 mm diameter, 6° angle
-
Handlebar: Stout Mini Rise, alloy, 9° backsweep, 15 mm rise, 31.8 mm diameter
-
Grips: Specialized Trail Grips, lock-on
-
Saddle: Bridge Sport, steel rails, 155/143 mm
-
Seatpost: Alloy, 2-bolt clamp, 30.9 mm diameter
Accessories
-
Pedals: SBC-54 Flat pedal
Weight
-
Weight: 12.67 kg (27 lb, 14.9 oz)
-
Measured size: MD (Medium)
Note
Technical specifications may change without notice depending on component availability.
Product images are for illustrative purposes only and may not exactly reflect the described features.
The Specialized Rockhopper Expert is the perfect hardtail mountain bike for those who want to start exploring trails with a reliable, high-performance bike ready to tackle any off-road adventure.
Do you want to receive your bike ready for use? Don't forget to add the bike assembly service at the time of purchase! Discover all the details here: Francesconi bike assembly
A Complete Guide to Bike Sizes
Foreword: Not all bike sizes are the same
Each type of bike has a specific frame and often uses a different size scale. For example, a road bike with a 54cm frame might be considered a medium size by one brand, but a large by another.
Bicycle adjustment margins
Some types of bikes, like gravel bikes, offer a wide range of adjustments, adapting to different body types. Other models, however, have limitations in this regard. This is an important aspect to consider.
How to use size charts
We've created a simple guide to help you find the right bike size:
- Check out our size charts for each bike type.
- Learn more with specific tips to help you make the right choice.
Size Charts: Find Your Perfect Bike
Gravel and road bikes
Sizes are based on the length of the top tube (in cm), which determines the reach of the bike.
| Cut
|
Recommended height
|
Horizontal tube length
|
| XS |
Up to 157 cm |
48-50 cm |
| S |
157-167 cm |
50-53 cm |
| M |
168-178 cm |
53-56 cm |
| THE |
178-185 cm |
56-58 cm |
| XL |
Over 185cm |
58-62 cm |
For gravel, measurements may vary slightly due to different geometries, but remain similar.
Mountain bike
MTBs are measured in inches, based on the seat tube.
| Cut
|
Recommended height
|
Size (in inches)
|
| XS |
Up to 157 cm |
14"-16" |
| S |
157-167 cm |
15"-17" |
| M |
168-178 cm |
16"-19" |
| THE |
178-185 cm |
18"-20" |
| XL |
Over 185cm |
20"-23" |
Sizes also vary depending on the type of MTB: full-suspension , hardtail or fat bike .
Children's bikes
The size depends on the size of the wheels, often associated with age:
| Age
|
Wheel Size
|
| 1-3 years |
12" |
| 2-4 years |
14" |
| 4-6 years |
16" |
| 5-8 years |
20" |
| 8-10 years |
24" |
| Over 10 years |
26"/27.5" |
What to do with half measures?
If you are between two sizes:
-
Comfort : Choose the larger size.
-
Performance : Go for the smaller size.
Final tips for choosing
-
Consult the manufacturer's instructions : Always check the brand's guidelines.
-
Ask an expert : a specialized workshop can help you choose based on your height, ideal reach and goals.
-
Test the bike : If possible, test the model you intend to purchase.