BIANCHI ARCADEX PRO GRX 820 12SP

The Bianchi Arcadex Pro GRX 820 12v is a carbon gravel bike designed for real adventure: long distances, bikepacking, white roads, technical dirt tracks, and trips where reliability, comfort, and load capacity matter just as much as performance.

This is the Bianchi model dedicated to adventure gravel, different from pure gravel racing: here the goal is to explore, ride for hours and days, tackle varied terrain with stability and control, while still maintaining a modern and responsive ride.

The Arcadex Pro carbon frame features an endurance geometry designed to offer a comfortable position over long distances without making the ride slow or imprecise. It remains stable under full load, yet responsive when you push the pace on compact dirt or asphalt.

Fully integrated cable routing through the Acros ICR headset keeps the lines clean and protects the cables from dirt and external elements — a key aspect for travel and extended off-road use.

One of the key highlights is the generous tire clearance: compatible with tires up to 700x50 mm, it lets you adapt the bike to very rough terrain, coarse gravel, or mixed routes, boosting comfort, grip, and safety. With 45 mm tires, you can also fit clip-on fenders, making it perfect for every season.

Arcadex is truly built for adventure thanks to the Internal Frame Storage (IFS) system, which lets you store tools and small items inside the frame using a dedicated pouch: fewer external bags, a lower center of gravity, and a more stable bike.

The Shimano GRX 820/822 1x12-speed drivetrain is gravel-specific: precise shifting even on rough surfaces, with a wide gear range (11-51T) to tackle steep climbs under full load and fast flat sections.

The Velomann Terbium 30 carbon wheels with a wide internal channel improve tire stability, traction, and comfort, making the bike more controllable on uneven terrain.

It is the perfect choice for anyone looking for a solid, modern carbon gravel bike ready for bikepacking, capable of moving from asphalt to the most demanding dirt trails without limits.

Technical specifications:

Frame and fork

Frame: Arcadex PRO carbon
Brake standard: Flat mount 140/160
Bottom bracket: PressFit 86.5 x Ø41
Rear axle: thru-axle 12x142 mm
Front derailleur: not supported (1x drivetrain)
Derailleur hanger: SRAM UDH type
Fork: Bianchi Arcadex full carbon
Brake standard: flat mount 140/160
Front axle: thru-axle 12x100 mm
Tire clearance: up to ETRTO 622-50 mm
Headset: Bianchi Custom Acros ICR, integrated cable routing

Drivetrain

Shifters: Shimano GRX ST/BL-RX820
Rear derailleur: Shimano GRX RD-RX822 SGS (cassette up to 51T)
Crankset: Shimano GRX FC-RX820-1, 40T
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-M7100 12v, 11-51T, MicroSpline freehub body

Brakes

Calipers: Shimano BR-RX820 hydraulic
Rotors: Shimano SM-RT70 IceTech, Centerlock, 160 mm front and rear

Wheels and tires

Wheels: Velomann Terbium 30, carbon, 700C, tubeless ready
Rim depth: 30 mm
Internal width: 25 mm
Tires: Pirelli Cinturato Gravel M Classic 45-622, tan sidewall

Cockpit

Stem: Velomann aluminum AICR, -2°
Lengths: 80 mm (47), 90 mm (51), 100 mm (55), 110 mm (58), 120 mm (61)
Handlebar: Velomann Gravel ICR, aluminum
Flare: 16°
Drop: 130 mm
Reach: 70 mm
Widths: 400 mm (47/51), 420 mm (55/58), 440 mm (61)
Handlebar tape: Bianchi Hexagon, 2.5 mm thick, black

Saddle and seatpost

Seatpost: Velomann Carbon UD Ø27.2 mm
Lengths: 300 mm (47), 350 mm (51/55), 400 mm (58/61)
Saddle: Velomann Mitora 149 H1, central cutout, AISI rails, 250x149 mm, 230 g ±2 

Bianchi reserves the right to change specifications and components based on availability, without notice.

Tip: to receive the bike ready to ride, you can add the “Bici montata e regolata dai tecnici Cicli Drigani” option to your cart for €59. With this service, the bike will arrive assembled, adjusted, and ready to pedal. Without this option, the bike will be delivered in the manufacturer's original packaging and will require some technical work before it can be used safely.