The Bianchi Impulso is a dedicated aero gravel race platform designed for high-speed efficiency and pack dynamics rather than backcountry adventure. Developed by Bianchi’s Reparto Corse, the current generation borrows aerodynamic cues from the brand's top-tier road bikes, resulting in a highly integrated chassis focused on power transfer and forward momentum. Moving away from the aluminum Allroad lineage, this carbon frameset utilizes a progressive geometry tailored for fast, rolling terrain and competitive events. The platform is built around an integrated fork-to-head-tube design, fully internal cable routing, and a proprietary D-shaped seatpost to minimize drag. With tire clearance capped at 42mm, the Impulso clearly signals its intentions: it prioritizes speed on groomed gravel and dirt roads over technical singletrack capability. It suits the aggressive gravel racer or fast-paced group rider looking for a sharp, road-adjacent feel off the pavement.
| Stack | 554mm |
| Reach | 391mm |
| Top tube | 550mm |
| Headtube length | 135mm |
| Seat tube length | 490mm |
The Impulso utilizes an aggressive, race-oriented geometry that places the rider in a low, aerodynamic posture. A relatively steep 71.5-degree head tube angle and 74-degree seat tube angle keep the handling quick and the rider’s weight forward for optimal power delivery. Paired with a 70mm bottom bracket drop, the bike maintains high-speed stability without sacrificing the agility needed to navigate tight pack dynamics.
Fit and cockpit integration vary significantly across the sizing and build tiers. The flagship RC models feature Bianchi’s Reparto Corse AeroFlare one-piece carbon cockpit, which dictates a fixed stem length and bar width per frame size, emphasizing aerodynamic gains but limiting fit adjustments. The Pro and Comp builds utilize a more traditional two-piece Velomann alloy stem and handlebar setup, offering easier customization for reach and drop. Across all builds, the proprietary D-shaped carbon seatpost features a 20mm offset, pushing the rider slightly rearward to balance the steep seat tube angle.
Frameset
Frame
Bianchi Impulso RC Disc (Flat Mount 140/160; PressFit 86.5 x Ø41; rear axle 12x142; brazed-on front derailleur; SRAM UDH rear derailleur hanger)
Fork
Bianchi Impulso Integrated Fork (Flat Mount 140/160; front axle 12x100; tire clearance ETRTO 622-42mm; 1 1/8" steerer; HM-HS carbon composite)
Groupset
Shift levers
Shimano GRX ST-RX825 (Di2)
Front derailleur
Shimano GRX FD-RX825
Rear derailleur
Shimano GRX RD-RX825
Cassette
Shimano CS-HG710 12-speed, 11-36T (HG11 freehub interface)
Chain
Shimano CN-M7100
Crankset
Shimano GRX 820 FC-RX820 48-31T w/ 4iiii Precision 3 (single-side) power meter; crank length: 170mm (XS/47, SM/51), 172.5mm (MD/55, LG/58), 175mm (XL/61)
Bottom bracket
Shimano SM-BB72-41B, PressFit
Front brake
Shimano hydraulic disc brake, BR-RX820
Rear brake
Shimano hydraulic disc brake, BR-RX820
Front rotor
Shimano RT-CL800 IceTech, Center Lock, 160mm
Rear rotor
Shimano RT-CL800 IceTech, Center Lock, 160mm
Wheelset
Front wheel
Reparto Corse RC43 carbon (43mm profile; tubeless ready/clincher; ceramic-bearing hubs)
Rear wheel
Reparto Corse RC43 carbon (43mm profile; tubeless ready/clincher; ceramic-bearing hubs; HG/XDR-compatible depending on build)
Front tire
Pirelli Cinturato Gravel RC, 700x40c, 60TPI, TLR, folding, tan sidewall
Rear tire
Pirelli Cinturato Gravel RC, 700x40c, 60TPI, TLR, folding, tan sidewall
Cockpit
Stem
Integrated (Reparto Corse AeroFlare one-piece cockpit; size-dependent: 90/400 (XS/47-SM/51-MD/55), 100/400 (LG/58), 110/420 (XL/61))
Handlebars
Reparto Corse AeroFlare (flare 16°; drop 120mm; reach 80mm; 1 1/8" steerer interface; sizes: 90/400 (XS/47-SM/51-MD/55), 100/400 (LG/58), 110/420 (XL/61); HM-HS carbon composite)
Saddle
Bianchi RC139 Carbon (microfiber cover; PWR gel inserts; carbon shell; carbon rails; 250x139mm; 145g)
Seatpost
Bianchi Custom D-Shape carbon seatpost (20mm offset; length: 300mm XS/47, 350mm SM/51 & MD/55, 380mm LG/58 & XL/61)
Grips
Bianchi Arrow bar tape, 2.5mm thickness, black
The Impulso lineup spans three distinct tiers—Comp, Pro, and RC—all sharing the same core carbon frame shape, 42mm tire clearance, and SRAM UDH compatibility. The entry-level Comp builds utilize mechanical Shimano GRX 610 12-speed drivetrains paired with heavy-duty Fulcrum RapidRed alloy wheels. These models offer a strong value foundation for privateer racers, though the heavier rolling stock adds noticeable weight.
Stepping up to the Pro tier introduces a full Shimano GRX 820 mechanical groupset and upgrades the rolling stock to Velomann Terbium carbon wheels, significantly reducing rotational weight for better climbing response.
The flagship RC models represent the fully integrated race spec. These builds move to electronic shifting with either Shimano GRX 825 Di2 or the 13-speed SRAM RED XPLR AXS. The RC tier also introduces the one-piece AeroFlare carbon cockpit, Reparto Corse 43mm deep-section carbon wheels with ceramic bearings, and factory-installed power meters—a single-sided 4iiii unit on the Shimano build and a SRAM RED power meter crankset on the XPLR model.
Comp GRX 610 Disc 2x12sp
Price TBD
Comp GRX 610 Disc 2x12sp (YTB86)
Price TBD
Pro GRX 820 Disc 2x12sp
Price TBD
RC GRX 825 Di2 2x12sp
Price TBD
RC Red XPLR Disc 1x13sp
Price TBD
Reviewers characterize the Impulso as a highly efficient, purpose-built race machine that excels on fast, rolling courses. The chassis delivers immediate power transfer, with testers noting the "super stiff frame" feels "really responsive when you put the power down" (YouTube). This rigidity translates to excellent straight-line speed and pack-riding efficiency, though it comes with a tradeoff in overall comfort. On rougher terrain, the ride "felt a little harsher than some other bikes" that engineer more compliance into their carbon layups (YouTube).
Handling is generally described as stable and predictable at speed. Despite the firm ride quality, testers felt secure on descents, noting the bike remained "planted" and they were "not limited by the frame at all" when navigating downhill sections (YouTube).
The primary critique centers on the weight of the entry-level builds. While the frame itself is praised as a high-quality foundation, the stock alloy wheels on the Comp models make the bike feel somewhat "sluggish going uphill" (YouTube). Reviewers consistently suggest that upgrading the rolling stock reveals the frame's true climbing potential, transforming it into a sharper competitive tool.
