Bianchi IMPULSO RC GRX825 DI2 2x12S

The Bianchi Impulso RC is the flagship gravel racing bike from Bianchi, designed for high-speed competition on dirt, white roads, and fast mixed terrain. It is a bicycle born for those who want to race in modern gravel, with a racing setup, total integration, and race-level components, as demonstrated by the specifications also used in UCI Gravel events.

This version is equipped with Shimano GRX Di2 2x12 electronic shifting, the ideal solution for those seeking precise shifting, a wide gear range, and maximum reliability even on rough terrain.

The high-modulus carbon frame is developed to combine torsional stiffness, lightness, and control at high speeds. The geometry is performance-oriented: an efficient riding position, stable front end, and immediate response when accelerating on compact gravel and fast sections.

The fully integrated cable routing via the Acros ICR headset improves aerodynamics, protects the cabling, and enhances aesthetic cleanliness. The full carbon fork contributes to steering precision and vibration damping, maintaining great front-end stability even on the most technical sections.

The Shimano GRX Di2 RD-RX825 2x12 drivetrain offers fast and precise electronic shifting, with a 48/31T crankset paired with an 11-36T cassette: a perfect combination for alternating between fast sections and steep climbs on mixed terrain. The integrated 4iiii power meter allows for accurate power data monitoring, ideal for training and racing.

The Reparto Corse RC43 high-modulus carbon wheels are designed for fast gravel: an aerodynamic profile, high lateral stiffness, and tubeless-ready compatibility. Mounted with Pirelli Cinturato Gravel RC 40 mm tires, they ensure smooth rolling on compact surfaces and secure grip in variable conditions.

The Reparto Corse AeroFlare carbon cockpit with 16° flare offers superior control on descents and stability on technical sections, while maintaining an effective position when pushing hard.

It is the ideal choice for those seeking a carbon gravel race bike that is fast, responsive, and ready for competitions, gravel marathon events, and high-intensity rides on mixed routes.

Technical specifications:

Frame

Frame: Impulso RC carbon, flat mount disc brakes 140/160, PressFit 86.5x41 bottom bracket, 12x142 mm rear thru-axle, braze-on front derailleur, SRAM UDH-type derailleur hanger

Fork: Bianchi Impulso full carbon, flat mount 140/160, thru-axle 12x100 mm, wheel clearance up to 700x42c

Headset: Bianchi Custom Acros ICR with integrated cable routing

Drivetrain

Shifters: Shimano GRX Di2 ST-RX825

Rear derailleur: Shimano GRX Di2 RD-RX825 12-speed

Front derailleur: Shimano GRX Di2 FD-RX825

Crankset: Shimano GRX FC-RX820 48/31T with 4iiii Precision 3 power meter (single side)

Crank lengths: 170 mm (XS/SM), 172.5 mm (MD/LG), 175 mm (XL)

Bottom bracket: Shimano SM-BB72-41B PressFit

Chain: Shimano CN-M7100

Cassette: Shimano CS-HG710 12-speed 11-36T (HG freehub body)

Brakes

Brakes: Shimano GRX hydraulic BR-RX820

Rotors: Shimano RT-CL800 IceTech, centerlock, 160 mm front / rear

Wheels and tires

Wheels: Reparto Corse RC43, high-modulus carbon rims, sealed bearings with ceramic balls, compatible with HG and XDR, tubeless ready

Tires: Pirelli Cinturato Gravel RC 700x40c TLR, 60 TPI, tan sidewall

Cockpit

Integrated handlebar: Reparto Corse AeroFlare carbon, 16° flare, 120 mm drop, 80 mm reach

Stem/handlebar measurements:
90/400 (XS) – 100/400 (SM) – 110/420 (MD/LG) – 120/440 (XL)

Handlebar tape: Bianchi Arrow 2.5 mm, black

Saddle and seatpost

Seatpost: Bianchi Custom D-Shape carbon, 20 mm offset
Saddle: Bianchi RC139 Carbon with PWR gel inserts, carbon rails, 250x139 mm, weight 145 g

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

Suggestion: to receive the bike ready to ride, you can add the “Bike assembled and adjusted by Cicli Drigani technicians” option to your cart for 59€. With this service, the bike will arrive assembled, adjusted, and ready to be ridden. Without this option, the bike will be delivered in the manufacturer's original packaging and will require some technical operations before it can be used safely.