Obed Boundary Carbon Shimano GRX 820 1x12 spd

2026 RoadGravel Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 12 40t / 10–51t
Gear range: 510%
Frame: Carbon
Brakes: Hydraulic disc

Not published by the manufacturer

Sizes and geometry

Components

10 of 16 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.

Suspension

1 part

Fork

Select in Builder Not identified

Drivetrain

6 parts

Bottom bracket

BB86 Press-Fit Not identified
Cassette
- Shimano Deore XT CS-M8100-12 12 speeds
CS-M8100-12
Chain
- Shimano Deore XT CN-M8100
CN-M8100
Crankset
- Shimano GRX FC-RX820 12 speeds 40t
FC-RX820
Rear derailleur
- Shimano GRX RD-RX822 12 speeds
RD-RX822
Shifters
- Shimano GRX ST-RX820
ST-RX820

Brakes

2 parts

Wheels and tires

2 parts

Rims

Select in Builder Not identified
Tires

Select in Builder Not identified

Cockpit and contact points

5 parts

Handlebar
- FSA A-WING AGX ALLOY
Headset
- Cane Creek
Saddle

Select in Builder Not identified
Seatpost

Select in Builder Not identified
Stem
- FSA Energy

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 22.8 in
Highest gear: 116.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BB86/BB92
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

22.8 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,452 bicycles with this information
Coverage: 73.2% of the class

Highest gear

116.0 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,452 bicycles with this information
Coverage: 73.2% of the class

Shifting

Mechanical

706 of 1,977 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2026
Sample: 1,977 bicycles with this information
Coverage: 99.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.7 km/h
Highest gear: 44.4 km/h

Total gear range 510%

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: 22.8–116.0 gear inches
Class reference (p10–p90): 22.8–127.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2026
Lowest gear: 1452 bicycles with this information, 73.2% of the class
Highest gear: 1452 bicycles with this information, 73.2% 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

Differences across 2026 builds
Specification	This bicycle Obed Boundary Carbon Shimano GRX 820 1x12 spd	Obed Boundary Carbon Shimano GRX 810 2x	Obed Boundary Carbon Shimano GRX 820 2x12 spd	Obed Boundary Carbon Shimano GRX 825 Di2 12 spd	Obed Boundary Carbon SRAM Apex XPLR	Obed Boundary GRX 600 Shimano GRX 810 2x
Frame
Frame material	Carbon	Carbon	Carbon	Carbon	Carbon	Not informed
Drivetrain
Front chainrings	1	2	2	2	1	2
Smallest chainring	40	30	31	31	40	31
Largest chainring	40	46	48	48	40	48
Rear sprockets	12	11	12	12	12	11
Smallest sprocket	10	11	11	11	11	11
Largest sprocket	51	34	34	34	44	34
Lowest gear	22.8 in	25.6 in	26.4 in	26.4 in	26.4 in	26.4 in
Highest gear	116.0 in	121.3 in	126.6 in	126.6 in	105.5 in	126.6 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Electronic	Mechanical	Mechanical