2027 Bianchi Impulso RC GRX 825 Di2 2x12sp - 4iiii Power Meter

The new Impulso family is Bianchi's answer to gravel riders seeking speed on any type of terrain, from dirt to gravel, from mud to asphalt. Bianchi's Reparto Corse designed the new Impulso platform to meet the needs of the most competitive gravel riders, those who demand aerodynamic performance, lightweight performance, and off-road versatility from their bikes. Impulso RC is the pinnacle of Bianchi's racing spirit applied to gravel.

In gravel racing, speed and riding technique are pushed to the extreme.

The Racing Department has optimized the Impulso RC in detail to face the challenges of this discipline, treating every aspect as part of a holistic system aimed at maximum performance.

The Impulso frame features a progressive geometry, inspired by the stability and performance of cross-country racing MTBs. Compared to the Specialissima RC, the Impulso features a shorter stem and a longer reach. The long 1,025mm wheelbase ensures safety and stability even on the roughest sections. Additionally, we evaluated various options for the bottom bracket drop of the new Impulso family, ultimately opting for a 70mm drop: the goal is to offer the cyclist maximum control and a more aggressive feel in the saddle.

• The Impulso frame can fit tires up to 42mm wide, but the use of thin tires helps expel mud and debris when conditions and the route require it.
• The Impulso RC is assembled with a pair of Reparto Corse gravel wheels, designed specifically for it. The 43mm profile combines with a 25mm internal channel, setting the minimum tire width at 30mm. The construction is high-modulus carbon with a 3K finish and high-performance sealed ceramic bearings in the hubs. The wheelset weighs 1,570g (±5%).The RC43 wheels offer superior stiffness and a sleek profile that significantly impacts the overall speed of the bike. The hubs are Ceramitech with ceramic ball bearings.The 25mm internal channel also allows you to ride with lower pressures, reducing the risk of punctures in the heat of racing. This also means greater control on the more technical sections of a gravel course.
• UCI Gravel World Tour Championship-level performance. With its aggressive design, the RC139 Carbon saddle is engineered to provide the best aerodynamic position and maximum power transmission while pedaling.

Specifications

• Frame: Bianchi Impulso RC, Flat mount caliper 140/160, PressFit 86.5×41 mm, Thru axle, OLD: 142 mm, Sram UDH, Max chainrings: 46-52T Shimano, 43-48T Sram, Wheel clearance: ETRTO 622-42, Material: Carbon Fiber, Sizes: XS-SM-MD-LG-XL
• Fork: Bianchi Impulso, Flat mount caliper 140/160, Thru axle, OLD: 100 mm, Wheel clearance: ETRTO 622-42 mm, Head tube diameter: 1″ 1/8, Material: Carbon fiber
• Steering Series: Acros for internal cable passage

Drivetrain

• Commands: Shimano GRX, shifter lever ST-RX825 Di2, caliper BR-RX820
• Crankset: Shimano GRX, FC-RX820, 48x31T Crank length: 170 mm (XS-SM); 172.5 mm (MD-LG); 175 mm (XL)
• Cassette: Shimano 105, CS-R7101 11-36T, 11-12-13-14-15-17-19-21-24-28-32-36T
• Rear Derailleur: Shimano GRX Di2, RD-RX825, 12sp
• Bottom Bracket: Shimano SM-BB72-41B, press fit type for road
• Front Derailleur: Shimano GRX Di2, FD-RX8
• Chain: Shimano 105, CN-M7100

Brakes

• Brakes: Shimano BR-RX820 Hydraulic disc brakes
• Rotors: Shimano RT-CL800 Center Lock with Ice Tech, 160 mm
• Light brake: Included in the commands

Handlebar

• Handlebar Stem: Bianchi Reparto Corse integrated handlebar, carbon, for Acros headset, integrated cables, 120 mm drop, 80 mm reach, 16° flare, sizes: 90/400 mm (XS-MD); 100/400 mm (LG); 110/420 mm (XL)
• Fold: Included in the handlebar stem
• Handlebar tape: Bianchi Hexagon tape, 2.5 mm thick, black

Wheels

• Wheels: Bianchi Reparto Corse RC43, Carbon rim, 43mm profile height, 700x24.5C, HG11 body
• Tires: Pirelli Cinturato Gravel RC, 700×40, 60 TPI, TLR

Saddle

• Seatpost: Bianchi Impulso, full carbon, aero, Offset 20 mm, Lunghezza: 300 mm (XS); 350 mm (SM-MD); 380 mm (LG-XL)
• Saddle: Bianchi Reparto Corse RC139 Carbon, 139×250 mm, full carbon
• Seatpost Clamp: Bianchi Custom

Subject to component availability, Bianchi reserves the right to make changes to specifications without notice.

Geometry