Genesis Datum 20 W

2018 RoadGravel Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £2,399 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 11 34–50t / 11–32t
Gear range: 428%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 151–164
SM 160–172
MD 166–179

Components

17 of 20 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

24/30T Modulus Carbon Road Disc w/ Tapered Headtube & Fully Internal Cable Routing Not identified

Suspension

1 part

Fork

Full Carbon Fork w/ 1-1/2" - 1-1/8" Tapered Steerer w/ 12mm TA Not identified

Drivetrain

7 parts

Bottom bracket
- Shimano BB-RS500-PB
BB-RS500-PB
Cassette
- Shimano CS-5800 11–32t
CS-5800CS-5800-11
Chain
- KMC X11 11 speeds
Crankset
- Shimano FC-5800 34t
FC-5800
Front derailleur
- Shimano 105 FD-5801
FD-5801
Rear derailleur
- Shimano RD-5800-SS
RD-5800-SSRD-5800
Shifters
- Shimano ST-RS505
ST-RS505

Brakes

2 parts

Brake levers
- Shimano ST-RS505
ST-RS505
Brakes
- Shimano BR-RS505
BR-RS505

Wheels and tires

5 parts

Front hub
- Formula
RX-81QRX-26
Rear hub
- Formula
RX-81QRX-26
Rims
- Jalco
Spokes

Stainless steel 14g Not identified
Tires
- Clement

Cockpit and contact points

4 parts

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Reach 375mm

Stack 563mm

Wheelbase 1001mm

Head angle 72.0°

Seat angle 73.5°

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 3 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	365	375	385
Stackmm	544	563	585
Top tube lengthmm	526	542	561
Seat tube lengthmm	460	490	520
Head tube lengthmm	115	135	155
Head tube angle	72°	72°	72°
Seat tube angle	73.5°	73.5°	73.25°
Chainstay lengthmm	420	420	420
Wheelbasemm	985	1001	1017
Front centermm	576	592	607
Bottom bracket dropmm	72	72	72
Bottom bracket heightmm	277	277	277
Standover heightmm	752	777	801
Fork rakemm	50	50	50
Trailmm	59	59	59
Stack/reach ratio	1.49	1.50	1.52
Suspension and parts
Crank lengthmm	165	170	170
Handlebar widthmm	380	380	400
Stem lengthmm	80	80	90

Not published by the manufacturer: Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: womens
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 30.8 in
Highest gear: 131.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Shifting: Mechanical

Additional specifications

Bottom bracket standard: BB86/BB92
Tire width: 32c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

2 measures

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

Lowest gear

30.8 gear inches

This value is above the central range for this class.

Cohort: Road / Gravel Model year: 2018
Sample: 204 bicycles with this information
Coverage: 99.0% of the class

Highest gear

131.8 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2018
Sample: 204 bicycles with this information
Coverage: 99.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.8 km/h
Highest gear: 50.5 km/h

Total gear range 428%

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: 30.8–131.8 gear inches
Class reference (p10–p90): 24.9–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2018
Lowest gear: 204 bicycles with this information, 99.0% of the class
Highest gear: 204 bicycles with this information, 99.0% 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 2018 builds

Differences across 2018 builds
Specification	This bicycle Genesis Datum 20 W	Genesis Datum
Frame
Intended fit	womens	Unisex
Drivetrain
Front chainrings	2	1
Smallest chainring	34	42
Largest chainring	50	42
Largest sprocket	32	42
Lowest gear	30.8 in	29.0 in
Highest gear	131.8 in	110.7 in
Other specifications
Bottom bracket standard	BB86/BB92	Not informed