Bianchi Impulso Pro GRX 820 Gravel Bike – Performance, Speed, and Control on Every Terrain
The Bianchi Impulso Pro GRX 820 is a carbon gravel bike designed to offer high performance, versatility, and comfort on road and off-road. Equipped with the Shimano GRX 820 12-speed groupset, it is the ideal choice for riders seeking speed, precision, and reliability on every type of terrain.
Technical Specifications
Carbon Frame and Gravel Racing Geometry
- Frame Bianchi Impulso Pro designed for high performance
- Disc Brake Compatibility flat mount 140/160 mm
- Bottom Bracket PressFit 86.5 x diam. 41
- Rear Thru Axle 12x142 mm
- Derailleur with SRAM UDH hanger mount
- Chainring Compatibility:
- 46T–52T (Shimano)
- 43T–48T (Sram)
Fork and Full Integration
- Fork Bianchi Impulso integrated carbon fiber
- Disc Brakes flat mount 140/160 mm
- Front Thru Axle 12x100 mm
- Tire Clearance: ETRTO 622-42 mm
- Steerer Tube: 1 1/8”
- Headset: Bianchi Custom Acros ICR with integrated cable routing
Shimano GRX 820 12-speed drivetrain
- Shifters: Shimano GRX ST-RX820
- Rear Derailleur: Shimano GRX RD-RX820 (max 36T)
- Front Derailleur: Shimano GRX FD-RX820
- Crankset: Shimano GRX FC-RX820 48-31T
- Crank Arm Lengths:
- 170 mm: XS (47), SM (51)
- 172.5 mm: MD (55), LG (58)
- 175 mm: XL (61)
- Bottom Bracket: Shimano SM-BB72-41B Press Fit
- Chain: Shimano CN-M7100
- Cassette: Shimano CS-HG710 12v 11-36T (HG11)
Hydraulic Disc Brakes
- Brakes: Shimano BR-RX820 hydraulic
- Rotors: Shimano SM-RT70 IceTech
- Mount: Centerlock
- Diameter: 160 mm front and rear
Carbon Wheels and Gravel Tires
- Wheels: Velomann Terbium
- Tubeless ready
- Diameter: 700C
- Material: carbon
- Profile height: 30 mm
- Internal channel: 25 mm
- Tires: Pirelli Cinturato™ Gravel H Classic 40-622 tan sidewall
Gravel Cockpit
- Stem: Velomann aluminum AICR
- Angle: -2°
- Steerer diameter: 1-1/8" (28.6 mm)
- Bend diameter: 31.8 mm
- Lengths:
- 80 mm: XS (47), SM (51)
- 90 mm: MD (55)
- 100 mm: LG (58)
- 110 mm: XL (61)
- Handlebar bend: Velomann Gravel ICR aluminum
- Flare: 16°
- Drop: 130 mm
- Reach: 70 mm
- Diameter: 31.8 mm
- Widths:
- 400 mm: XS (47), SM (51)
- 420 mm: MD (55), LG (58)
- 440 mm: XL (61)
- Tape: La Spirale Ribbon cork
Saddle and Seatpost
- Seatpost: Bianchi Custom D-Shape
- Offset: 20 mm
- Lengths:
- 300 mm: XS (47)
- 350 mm: SM (51), MD (55)
- 380 mm: LG (58), XL (61)
- Material: HM-HS carbon fiber composite
- Saddle: Velomann MITORA 149 Hyper
- Technical cover
- Foam padding
- Reinforced carbon fiber shell
- Through axle
- Carbon rails
- Dimensions: 250 x 149 mm
- Weight: 190 g ± 2
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.
Why choose the Bianchi Impulso Pro GRX 820?
The Bianchi Impulso Pro GRX 820 is a premium carbon gravel bike, perfect for those looking for speed on asphalt and off-road performance, with high-end components, full integration, and geometry designed for long distances and gravel races.
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.
