
Velopedia Bicycle Archive
2024 Bianchi Arcadex PRO GRX 820
Original manufacturer specifications including 700c wheels, geometry for 5 published sizes.
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What Velopedia knows
- Model year
- 2024
- Category
- Gravel & Cyclocross
- Original MSRP
- $4,483.00
- Sizes
- XS, S, M, L, XL
- Colors
- AF - CK16 / Green Water, AW - Forest Green / Graphite
- Geometry
- 5 manufacturer sizes · Geometry context
- Record coverage
- 20 preserved details · 2 archived images · original MSRP · preserved geometry
- Archive ID
- 900001540
Frameset
| Frame Construction | Arcadex PRO 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:Non Compatible Rear Derailleur: SRAM UDH Hanger type Max Chainring Compatibility: |
|---|---|
| Fork | Bianchi Arcadex 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: Epoxy – SM Carbon Fiber Composite |
| Fork Material | Carbon Fiber |
Drivetrain
| Shifters | Shimano GRX 820 ST/BL-RX820 |
|---|---|
| Rear Derailleur | Shimano GRX 822 RD-RX822, SGS Maximum Cassette Sprocket 51T |
| Crankset | Shimano GRX 820 FC-RX820-1, 40T Crank Length: 170mm-XS(47)-SM(51), 172.5mm-MD(55)-LG(58), 175mm-XL(61) |
| Bottom Bracket | Shimano SM-BB72-41B, press fit |
| Cassette | Shimano CS-M7100-12 speed, 11-51T Driver body Interface: MicroSpline |
| Chain | Shimano CN-M7100 |
Brakes
| Brakes | Shimano Hydraulic Brake, BR-RX820; Rotors: Shimano SM-RT70 IceTech Hub Interface: Centerlock Rotor Diameter: 160 mm (front&Rear) |
|---|
Cockpit & Contact Points
| Headset | Bianchi Custom Acros ICR (Internal Cable Rounting) Spacers:5 mm x1, 10mm x3 Headtube Cover: Bianchi Costum Compresion Ring: 1.125 Inch Top Bearing: Angular contact Bearing 42x52x7 + seal Bottom Bearing: Angular contact Bearing 40x52x7 + seal |
|---|---|
| Handlebar | Velomann Gravel ICR Alloy Flare: 16° Drop: 130mm Reach 70mm Interface Diameter: 1 1/4″” (31.8mm) HandleBar Widths: 400 – SX(47) SM(51), 420 – MD(55) LG(58), 440 -XL(61) |
| Handlebar Extensions | Bianchi Hexagon tape 2.5mm thickness, Full black |
| 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) (SM-51), 90mm(MD-55), 100mm(LG-58),110mm(XL-61) |
| Saddle | Velomann MITORA 149 H1 cover: soft touch, padding: foam, shell: nylon carbon rails: Aisi Steel lenght: 250mm width: 149mm weight: 230g ± 2 |
| Seatpost | Velomann Carbon UD SeatPost O.D: Ø27.2 mm Seatpost lengths: 300mm-SX(47), 350mm- SM(51) MD(55), LG(58) XL(61) |
Wheels & Tires
| Wheels | Velomann Terbium clincher and tubeless ready Rim Diameter: 700C Material: Carbon Rim Height: 30 mm Inner Wigth Channel: 25 mm |
|---|---|
| Front Tire | Pirelli Cinturato™ GRAVEL M Classic, 45-622 tan sidewall |
| Rear Tire | Pirelli Cinturato™ GRAVEL M Classic, 45-622 tan sidewall |
| Wheel Size | 700c |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Seat tube | 410 mm | 448 mm | 485 mm | 515 mm | 550 mm |
| Effective top tube | 527 mm | 545 mm | 564 mm | 583 mm | 605 mm |
| Head tube | 90 mm | 110 mm | 130 mm | 155 mm | 185 mm |
| Head-tube angle | 70.5° | 70.5° | 71° | 71.5° | 71.5° |
| Seat-tube angle | 74.5° | 74° | 73.5° | 73.5° | 73° |
| Chainstay / rear center | 430 mm | 430 mm | 430 mm | 430 mm | 432 mm |
| Wheelbase | 1020 mm | 1034 mm | 1044 mm | 1059 mm | 1077 mm |
| Bottom-bracket drop | 75 mm | 75 mm | 75 mm | 75 mm | 75 mm |
| Reach | 376 mm | 383 mm | 391 mm | 402 mm | 410 mm |
| Stack | 544 mm | 563 mm | 584 mm | 610 mm | 638 mm |
| Fork offset / rake | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm |
| Front center | 601 mm | 615 mm | 625 mm | 639 mm | 656 mm |
| Fork length / axle-to-crown | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm |
Geometry source: Bianchi first-party coded geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
XS geometry
Archive context: The head angle of 70.5° sits somewhat steeper than typical. The seat angle of 74.5° sits somewhat steeper than typical. Its reach of 376 mm sits close to the middle of the group.
Compared with 37 distinct cyclocross/gravel geometries in the XS-equivalent size cohort from model years 2022–2026 in the Velopedia archive.SM geometry
Archive context: Its reach of 383 mm sits somewhat longer than typical. The seat angle of 74° sits somewhat more relaxed than typical. Its stack of 563 mm sits somewhat taller than typical.
Compared with 93 distinct cyclocross/gravel geometries in the Small-equivalent size cohort from model years 2022–2026 in the Velopedia archive.MD geometry
Archive context: Its reach of 391 mm sits somewhat longer than typical. The seat angle of 73.5° sits somewhat more relaxed than typical. Its wheelbase of 1044 mm sits close to the middle of the group.
Compared with 102 distinct cyclocross/gravel geometries in the Medium-equivalent size cohort from model years 2022–2026 in the Velopedia archive.LG geometry
Archive context: Its reach of 402 mm sits somewhat longer than typical. The head angle of 71.5° sits somewhat steeper than typical. The seat angle of 73.5° sits close to the middle of the group.
Compared with 75 distinct cyclocross/gravel geometries in the Large-equivalent size cohort from model years 2022–2026 in the Velopedia archive.XL geometry
Archive context: The head angle of 71.5° sits somewhat steeper than typical. The seat angle of 73° sits somewhat more relaxed than typical. Its stack of 638 mm sits somewhat taller than typical.
Compared with 79 distinct cyclocross/gravel geometries in the XL-equivalent size cohort from model years 2022–2026 in the Velopedia archive.Parts & serviceability
Find replacement parts
More qualified parts (5)
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameInspect the complete frame and fork in bright light for cracks, dents, distortion, corrosion, impact marks, suspicious paint differences or signs of repair. Check the head tube, bottom-bracket area, dropouts, joints and clamped surfaces especially closely.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 12-speed system.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads. If it is set up tubeless, confirm both tires hold pressure and ask when the sealant was last refreshed.Check wheels and tires →
- Bottom bracketTurn the cranks slowly, feel for rough bearings and check for side-to-side play. Creaking under load deserves investigation but does not identify the source by itself.Inspect the bottom bracket and shell →
Bike-specific inspection checklist 20 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2024 Bianchi Arcadex PRO GRX 820 · Cyclocross/Gravel · Published sizes: XS, S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Arcadex PRO 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:Non Compatible Rear Derailleur: SRAM UDH Hanger type Max Chainring Compatibility: · Fork: Bianchi Arcadex 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: Epoxy – SM Carbon Fiber Composite · Carbon Fiber
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano GRX 820 ST/BL-RX820 · Rear derailleur: Shimano GRX 822 RD-RX822, SGS Maximum Cassette Sprocket 51T · Crankset: Shimano GRX 820 FC-RX820-1, 40T Crank Length: 170mm-XS(47)-SM(51), 172.5mm-MD(55)-LG(58), 175mm-XL(61) · Bottom bracket: Shimano SM-BB72-41B, press fit · Cassette: Shimano CS-M7100-12 speed, 11-51T Driver body Interface: MicroSpline · Chain: Shimano CN-M7100
Brakes
Inspect the brakes →Archived: Brakes: Shimano Hydraulic Brake, BR-RX820; Rotors: Shimano SM-RT70 IceTech Hub Interface: Centerlock Rotor Diameter: 160 mm (front&Rear)
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700c · Wheels: Velomann Terbium clincher and tubeless ready Rim Diameter: 700C Material: Carbon Rim Height: 30 mm Inner Wigth Channel: 25 mm · Front tire: Pirelli Cinturato™ GRAVEL M Classic, 45-622 tan sidewall · Rear tire: Pirelli Cinturato™ GRAVEL M Classic, 45-622 tan sidewall
Controls and contact points
Archived: Handlebar: Velomann Gravel ICR Alloy Flare: 16° Drop: 130mm Reach 70mm Interface Diameter: 1 1/4″” (31.8mm) HandleBar Widths: 400 – SX(47) SM(51), 420 – MD(55) LG(58), 440 -XL(61) · Seatpost: Velomann Carbon UD SeatPost O.D: Ø27.2 mm Seatpost lengths: 300mm-SX(47), 350mm- SM(51) MD(55), LG(58) XL(61) · Saddle: Velomann MITORA 149 H1 cover: soft touch, padding: foam, shell: nylon carbon rails: Aisi Steel lenght: 250mm width: 149mm weight: 230g ± 2
Before and during the test ride
Follow the full used-bike inspection order →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.




