Bianchi Arcadex Pro GRX 820 1×12 Gravel Bike

Ride Deeper Into the Wilds

The 2025 Bianchi Arcadex Pro GRX 820 features Shimano’s rugged and reliable 1x gravel groupset paired with 45mm Pirelli Cinturato Gravel M tires to ensure this bike will make you the master of any dirt road or trail you set your sights on.

Features:

• FRAME: Arcadex PRO Disc Brake Specification: Flat Mount 140/160, Bottom Bracket Standard: PressFit 86.5 X ∅41, Rear Axle: thru12 OLD (Over-Locknut-Dimension): 142 mm, Front Derailleur: Non Compatible, Rear Derailleur: SRAM UDH Hanger type, Max Chainring Compatibility
• FORK: Bianchi Arcadex Fork, Disc Brake Specification: Flat Mount 140/160, Front Axle: thru12 OLD (Over-Locknut-Dimension): 100 mm, Tire Clearance: ETRTO 622-42mm, Steer tube Diameter: 1 1/8″, Material: Epoxy – SM Carbon Fiber Composite
• HEADSET: Bianchi Custom Acros ICR (Internal Cable Routing), Spacers: 5 mm x1, 10mm x3, Headtube Cover: Bianchi Custom, Compression Ring: 1.125 Inch, Top Bearing: Angular contact Bearing 42x52x7 + seal, Bottom Bearing: Angular contact Bearing 40x52x7 + seal
• SHIFTERS: Shimano GRX 820 ST/BL-RX820
• REAR DERAILLEUR: Shimano GRX 822 RD-RX822, SGS Maximum Cassette Sprocket 51T
• CRANKSET: Shimano GRX 820 FC-RX820-1, 40T, Crank Length: 170mm-XS(47)-SM(51), 172.5mm-MD(55)-LG(58), 175mm-XL(61)
• BOTTOM BRACKET: Shimano SM-BB72-41B, press fit
• CHAIN: Shimano CN-M7100
• CASSETTE: Shimano CS-M7100-12 speed, 11-51T, Driver body Interface: MicroSpline
• BRAKES: Shimano Hydraulic Brake, BR-RX820
• ROTOR: Shimano SM-RT70 IceTech, Hub Interface: Centerlock, Rotor Diameter: 160 mm (front & rear)
• WHEELS: Shimano SM-RT70 IceTech, Hub Interface: Centerlock, Rotor Diameter: 160 mm (front & rear)
• TIRE: Pirelli Cinturato™ GRAVEL M Classic, 45-622 tan sidewall
• STEM: Velomann AICR Alloy, Rise: -2°, Steerer Diameter: 1-1/8″ (28.6mm), HB interface Diameter: 1-1/4″ (31.8mm), Stem Lengths: 80mm – XS(47), 90mm – SM(51), 100mm-MD(55), 110mm-LG(58), 120mm – XL(61)
• HANDLEBAR: Velomann Gravel ICR Alloy, Flare: 16°, Drop: 130mm, Reach: 70mm, Interface Diameter: 1-1/4″ (31.8mm), Handlebar Widths: 400 – SX(47) SM(51), 420 – MD(55) LG(58), 440 – XL(61)
• GRIPS: Bianchi Hexagon tape, 2.5mm thickness, Full black
• SEATPOST: Velomann Carbon UD SeatPost, O.D: ∅27.2 mm, Seatpost lengths: 300mm-SX(47), 350mm- SM(51) MD(55), 400mm-LG(58) XL(61)
• SADDLE: Velomann MITORA 149 H1, cover: soft touch, padding: foam, shell: nylon carbon, rails: Aisi Steel, length: 250mm, width: 149mm, weight: 230g ± 2