Bianchi Impulso RC GRX 825 Di2

Name: Bianchi Impulso RC GRX 825 Di2
Brand: Bianchi

2026 RoadEndurance Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £5,850 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 31–48t / 11–36t
Gear range: 507%
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

Components

16 of 18 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

IMPULSO RC Disc Brake Specification: Flat Mount 140/160 Bottom Braket Standard: PressFit 86.5 X Ø41 Rear Axle: thru12 OLD (Over-Locknut-Dimension): 142 mm Front Derailleur: Brazed-on Type Rear Derailleur: SRAM UDH Hanger type Max Chainring Compatibility: Not identified

Suspension

1 part

Fork
- Bianchi

Drivetrain

8 parts

Bottom bracket
- Shimano SM-BB72-41B
SM-BB72-41B
Cassette
- Shimano CS-HG710-12 12 speeds 11–36t
CS-HG710-12
Chain
- Shimano SLX CN-M7100
CN-M7100
Crankset
- Shimano GRX FC-RX820 12 speeds 31t
FC-RX820
Front derailleur
- Shimano GRX FD-RX825 2 speeds
FD-RX825
Power meter
- Shimano GRX FC-RX820 12 speeds
FC-RX820
Rear derailleur
- Shimano GRX RD-RX825 12 speeds
RD-RX825
Shifters
- Shimano GRX ST-RX825
ST-RX825

Brakes

2 parts

Wheels and tires

2 parts

Rims
- Shimano
RT-CL800
Tires

Cinturato Gravel RC, 700 x 40c, 60TPI- TLR, Folding, Tan sidewall Not identified

Cockpit and contact points

4 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 391mm

Stack 554mm

Wheelbase 1025mm

Head angle 71.5°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	376	378	391	401	414
Stackmm	517	534	554	580	608
Top tube lengthmm	515	526	550	572	600
Seat tube lengthmm	410	450	490	520	550
Head tube lengthmm	100	118	135	162	190
Head tube angle	70.5°	70.5°	71.5°	71.5°	72°
Seat tube angle	75°	74.5°	74°	73.5°	73°
Chainstay lengthmm	425	425	425	426	428
Wheelbasemm	1007	1015	1025	1044	1063
Front centermm	592	600	610	628	645
Bottom bracket dropmm	70	70	70	70	70
Bottom bracket heightmm	266	266	266	266	266
Fork rakemm	50	50	50	49	49
Trailmm	67	67	61	62	59
Stack/reach ratio	1.38	1.41	1.42	1.45	1.47

Not published by the manufacturer: Standover height, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 31
Largest chainring: 48
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 25.0 in
Highest gear: 126.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BB86/BB92
Power meter: Shimano GRX 820 FC-RX820 48-31T. 4iiii Precision 3, single side powermeter Crank Length: 170mm-XS(47)-SM(51), 172.5mm-MD(55)-LG(58), 175mm-XL(61)
Additional specification: Model display: Precision
Additional specification: Model id: precision
Tire width: 40c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

25.0 gear inches

This value is below the central range for this class.

Cohort: Road / Endurance Model year: 2026
Sample: 479 bicycles with this information
Coverage: 79.3% of the class

Highest gear

126.6 gear inches

This value is below the central range for this class.

Cohort: Road / Endurance Model year: 2026
Sample: 479 bicycles with this information
Coverage: 79.3% of the class

Shifting

Electronic

327 of 604 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2026
Sample: 604 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.6 km/h
Highest gear: 48.5 km/h

Total gear range 507%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 25.0–126.6 gear inches
Class reference (p10–p90): 26.6–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2026
Lowest gear: 479 bicycles with this information, 79.3% of the class
Highest gear: 479 bicycles with this information, 79.3% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2026 builds
Specification	This bicycle Bianchi Impulso RC GRX 825 Di2	Bianchi Impulso Comp	Bianchi Impulso Comp disc GRX 610	Bianchi Impulso PRO	Bianchi Impulso PRO disc GRX 820	Bianchi Impulso RC
Frame
Frame material	Not informed	Carbon	Not informed	Carbon	Not informed	Carbon
Drivetrain
Front chainrings	2	2	2	1	2	2
Smallest chainring	31	30	30	40	31	31
Largest chainring	48	46	46	40	48	48
Rear sprockets	12	8	12	13	12	8
Smallest sprocket	11	11	11	10	11	11
Largest sprocket	36	36	36	46	36	36
Lowest gear	25.0 in	24.2 in	24.2 in	25.2 in	25.0 in	25.0 in
Highest gear	126.6 in	121.3 in	121.3 in	116.0 in	126.6 in	126.6 in
Cockpit
Shifting	Electronic	Mechanical	Mechanical	Electronic	Mechanical	Electronic
Other specifications
Power meter	Shimano GRX 820 FC-RX820 48-31T. 4iiii Precision 3, single side powermeter Crank Length: 170mm-XS(47)-SM(51), 172.5mm-MD(55)-LG(58), 175mm-XL(61)Additional specification: Model display: PrecisionAdditional specification: Model id: precision	Not informed	Not informed	Not informed	Not informed	Not informed
Wheel material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon