Specialized Rockhopper Expert Bicycle
The Specialized Rockhopper Expert represents the perfect balance between high performance and affordable price. With 30 years of innovation, this MTB offers a superior riding experience on any type of terrain. The A1 Premium aluminum frame with modern geometry ensures efficiency and safety, while the RockShox Judy SoloAir fork and SRAM NX 1x12 drivetrain make it ready to tackle any challenge.
Main features:
Frame in A1 Premium lightweight alloy, sturdy and lightweight, with internal cable routing and compatibility with a dropper seat post.
Available in two wheel sizes to ensure optimal handling for all riders.
Shimano hydraulic disc brakes for powerful and reliable braking.
Transmission 1x12 SRAM NX Eagle, simple and intuitive.
Hookless rims Specialized Stout with an internal diameter of 25mm for greater strength and reliability.
Technical specifications
Chassis
Frame: Specialized A1 premium butted alloy, zero-stack head tube, internal cable routing, forged dropouts 135x9mm, disc brake chainstay-mounted, replaceable derailleur hanger in alloy, provision for rack and dropper seatpost.
Saddle Clamp: In alloy with quick release, 34.9mm
Suspensions
Fork: RockShox Judy SoloAir, Turnkey damper, offset 46mm, QR, specific travel for size 80/90/100mm, alloy steerer tube
Brakes
Front brake: Shimano BR-MT200, hydraulic disc brake, 180mm
Rear brake: Shimano BR-MT200, hydraulic disc brake, 180mm
Transmission
Shift commands: SRAM SX Eagle, trigger, 12 speeds
Rear derailleur: SRAM NX Eagle, 12 speed
Gear Cassette: SRAM PG-1210 Eagle, 11-50t
Chain: SRAM SX Eagle, 12 speed
Crankset: Stylo Cranks
Central Movement: SRAM Powerspline
Wheels
Wheels: Specialized Alloy, hookless, Tubeless ready, internal width 25mm
Front hub: Formula DC-20, 6-Bolt, disc, spacing 100x9mm, quick-release
Rear hub: Formula DC-22, 6-Bolt freehub, disc, spacing 135x9mm, quick-release
Front tire: Ground Control 2BR 27.5/29x2.35
Rear tire: Ground Control 2BR 27.5/29x2.35
Inner tubes: Standard, Presta valve
Rings: In stainless steel, 14g
Cockpit
Handlebar: Alloy Mini Rise, backsweep 9°, rise 15mm, diameter 31.8mm
Grips: Specialized Trail Grips, lock-on
Handlebar Clamp: Made of 3D-forged alloy, 31.8mm, rise 7°
Seat post: In alloy, clamp with 2 bolts, diameter 30.9mm
Saddle: Bridge Sport, steel guide, width 155/143mm
Accessories
Identifier
Weight
Please note
Technical specifications may change without notice based on component availability.
The product images are purely indicative and may not exactly reflect the described features.
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.
