2025 Bianchi Impulso PRO GRX 820

The bike will ship in 2-3 days.

Frame

• Disc Brake Specification: Flat Mount 140/160
• Bottom Bracket Standard: PressFit 86.5 X diam.41
• Rear Axle: Thru12 OLD (Over-Locknut-Dimension): 142 mm
• Max Chainring Compatibility: 46T-52T

Fork

• Model: Bianchi Impulso Integrated 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: Carbon Fiber Composite

Headset

• Model: Bianchi Custom Acros ICR (Internal Cable Routing)

Drivetrain

Shifters

• Shimano GRX 820 ST-RX820

Rear Derailleur

• Shimano GRX 820 RD-RX820
• Maximum Cassette Sprocket: 36T

Front Derailleur

• Shimano GRX 820 FD-RX820

Crankset

• Shimano GRX 820 FC-RX820 48-31T
• Crank Lengths:
  • 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-HG710-12 speed, 11-36T
• Driver Body Interface: HG11

Brakes

Brakes

• Shimano Hydraulic Brake, BR-RX820

Rotor

• Shimano SM-RT70 IceTech
• Hub Interface: Centerlock
• Rotor Diameter: 160 mm (front & rear)

Wheels

Wheels

• Velomann Terbium clincher and tubeless ready
• Rim Diameter: 700C
• Material: Carbon
• Rim Height: 30 mm
• Inner Width Channel: 25 mm

Tire

• Pirelli Cinturato™ GRAVEL H Classic, 40-622
• Sidewall: Tan

Cockpit

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:
  • 400mm - XS(47), SM(51)
  • 420mm - MD(55), LG(58)
  • 440mm - XL(61)

Grips / Extensions

• La Spirale Ribbon Cork

Saddle

Seatpost

• Bianchi Custom D-Shape
• Offset: 20mm Back
• Seatpost Lengths:
  • 300mm - XS(47)
  • 350mm - SM(51), MD(55)
  • 380mm - LG(58), XL(61)
• Material: Epoxy - HM-HS Carbon Fiber Composite

Saddle

• Velomann MITORA 149 Hyper
• Shell: Nylon Carbon, Open Shell
• Rails: Carbon
• Length: 250mm
• Width: 149mm
• Weight: 190g ± 2