Ridley Dean Fast Dura-Ace Di2

Name: Ridley Dean Fast Dura-Ace Di2
Brand: Ridley

2017 RoadTriathlon Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 11 36–52t / 12–25t
Gear range: 301%
Frame: Carbon
Brakes: Rim brake

Rider height by size (cm)

Size guide

XS 151–164
SM 160–172
MD 166–179

Components

11 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.

Frame and fork

1 part

Frame

Dean Fast, 30T-24T HM Unidirectional Carbon, FAST technology, Internal Cablerouting Not identified

Suspension

1 part

Fork

Dean Fast, F-Split Fork Technology, Integrated F-Brake with centerpull technology Not identified

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

4 parts

Handlebar

Dean Fast full carbon integrated cockpit, adjustable stack and reach Not identified
Saddle
- 4ZA
Seatpost

Dean Fast Aero carbon Not identified
Stem

Dean Fast full carbon integrated cockpit, adjustable stack and reach Not identified

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Reach 410mm

Stack 518mm

Wheelbase 982mm

Head angle 73.0°

Seat angle 77.0°

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 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	395	410	425
Stackmm	503	518	533
Top tube lengthmm	511	530	548
Seat tube lengthmm	516	532	547
Head tube lengthmm	97	111	127
Head tube angle	72.5°	73°	73°
Seat tube angle	77°	77°	77°
Chainstay lengthmm	395	395	395
Wheelbasemm	966	982	1001
Front centermm	581	597	616
Bottom bracket dropmm	70	70	70
Bottom bracket heightmm	266	266	266
Fork rakemm	44	44	44
Trailmm	60	57	57
Stack/reach ratio	1.27	1.26	1.25

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
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 36
Largest chainring: 52
Rear sprockets: 11
Smallest sprocket: 12
Largest sprocket: 25
Lowest gear: 41.8 in
Highest gear: 125.7 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Tire width: 25c
Wheel material: Carbon
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

41.8 gear inches

This value is within the central range for this class.

Cohort: Road / Triathlon Model year: 2017
Sample: 65 bicycles with this information
Coverage: 98.4% of the class

Highest gear

125.7 gear inches

This value is below the central range for this class.

Cohort: Road / Triathlon Model year: 2017
Sample: 65 bicycles with this information
Coverage: 98.4% of the class

Shifting

Electronic

32 of 66 bicycles with this information use electronic shifting.

Cohort: Road / Triathlon Model year: 2017
Sample: 66 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 16.0 km/h
Highest gear: 48.1 km/h

Total gear range 301%

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: 41.8–125.7 gear inches
Class reference (p10–p90): 37.3–139.7 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Triathlon Model year: 2017
Lowest gear: 65 bicycles with this information, 98.4% of the class
Highest gear: 65 bicycles with this information, 98.4% 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 2017 builds

Differences across 2017 builds
Specification	This bicycle Ridley Dean Fast Dura-Ace Di2	Ridley Dean 105	Ridley Dean Fast Ultegra Di2	Ridley Dean Ultegra	Ridley Dean Ultegra Di2
Drivetrain
Smallest sprocket	12	11	11	11	11
Largest sprocket	25	28	28	28	28
Lowest gear	41.8 in	37.3 in	37.3 in	37.3 in	37.3 in
Highest gear	125.7 in	137.1 in	137.1 in	137.1 in	137.1 in
Cockpit
Shifting	Electronic	Mechanical	Electronic	Mechanical	Electronic
Other specifications
Tire width	25c	Not informed	23c	Not informed	Not informed
Wheel material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum