GT Bicycles eGrade Bolt Bike: Innovation and Performance for Electric Gravel
The GT Bicycles eGrade Bolt is the electric gravel bike designed to take on any challenge, ensuring comfort, safety and performance on any type of terrain. Equipped with the MAHLE ebikemotion X35 250W electric assistance system and the exclusive Triple Triangle frame design, this bicycle represents the perfect combination of advanced technology and reliability.
Why Choose the GT Bicycles eGrade Bolt?
This electric gravel bike is the ideal solution for those looking for high performance without sacrificing comfort and reliability. Whether you're tackling dirt roads, challenging trails or simply exploring new routes, the eGrade Bolt offers everything you need: pedal assistance, premium components and a cutting-edge design.
Technical specifications:
Chassis
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Frame : GT Grade Alloy Triple Triangle, exclusive design for Ebikemotion system, internal battery, tapered head tube for greater stiffness.
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Available sizes : SM, MD, LG.
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Fork : GT Grade E-Carbon, 1.5" tapered carbon stem, 12x100mm thru axle.
Wheels
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Rims : Shining, 32 spokes, resistant and light.
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Front hub : Formula, 12x100mm, 32 spokes.
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Rear hub : MAHLE Ebikemotion X35+, 32 spokes, integrated for optimal electric performance.
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Tires : WTB Nano Comp 700 x 40, ideal for gravel and mixed terrain.
Transmission
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Rear derailleur : Shimano GRX, designed for gravel.
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Controls : Shimano GRX400, 10 speed, ergonomic and reliable.
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Sprockets : Shimano HG500, 11-34T, for a versatile gear range.
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Chain : KMC X10, 10 speed, strong and durable.
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Crankset : Shimano GRX, 46/30, perfect for tackling climbs and descents.
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Bottom bracket : Shimano BSA RS500, robust and high-performance.
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Chain Guide : Included to ensure stability.
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Pedals : Not included.
Cockpit
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Handlebar : GT Butted 6061 Alloy, 16° Flare Drop, for a comfortable and stable position.
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Stem : GT All Terra 3D Forged Alloy, 31.8mm, lightweight and durable.
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Grips : GT Grip Bar Tape w/Gel, 3.5 mm, for a comfortable grip even over long distances.
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Headset : Tapered (1.5" lower - 1-1/8" upper) with 25mm aluminum top cap.
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Seatpost : GT All Terra Two Bolt Alloy, adjustable and reliable.
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Saddle : Fabric Scoop Shallow/Sport with steel rails, designed for maximum comfort.
Brakes
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Brakes : Shimano GRX 400 Hydro Disc, RT56 160 mm rotors (front and rear), for powerful, modulable braking.
E-Bike System
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Engine : MAHLE ebikemotion X35 250W, perfectly integrated into the frame design.
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Battery : MAHLE ebikemotion X35, 250Wh, for long days of adventure.
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Charger : X35 Charger included, for fast and safe charging.
Please note
Technical specifications are subject to change without notice based on component availability.
Product images are purely indicative and may not exactly reflect the characteristics described.
Don't miss your chance to own the GT Bicycles eGrade Bolt . Start your two-wheeled adventure today!
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:
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Comfort : Choose the larger size.
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Performance : Go for the smaller size.
Final tips for choosing
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Consult the manufacturer's instructions : Always check the brand's guidelines.
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Ask an expert : a specialized workshop can help you choose based on your height, ideal reach and goals.
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Test the bike : If possible, test the model you intend to purchase.
