BH RS1 4.5

Name: BH RS1 4.5
Brand: BH

2022 RoadRace Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £5,299 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 36–52t / 11–34t
Gear range: 446%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 158–167
SM 165–173
MD 169–180
LG 177–186
XL 183–191
XXL 186–194

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

RS1 Disc ACR Monocoque, PC Layup Not identified

Suspension

1 part

Fork

RS1 Disc Full Integrated Tapeder, Full Carbon 1.5 Not identified

Drivetrain

6 parts

Brakes

1 part

Brakes
- Shimano Ultegra

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Handlebar

EVO Monocoque ACR Not identified
Headset
- FSA
Saddle
- Prologo
Seatpost

RS1 Aero Not identified
Stem

EVO Monocoque ACR Not identified

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Geometry diagram unavailable

The drawing needs wheelbase, reach, stack and bottom bracket drop / Bottom bracket height, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	516	531	545	561	576	591
Seat tube lengthmm	460	480	500	520	540	560
Head tube lengthmm	120	135	150	175	190	215
Head tube angle	71°	72°	72.5°	73°	73.5°	73.5°
Seat tube angle	74.5°	74°	73.5°	73.5°	73°	72.75°
Chainstay lengthmm	412	412	415	415	418	418

Not published by the manufacturer: Reach, Stack, Wheelbase, Front center, Bottom bracket drop, Bottom bracket height, Standover height, Fork rake, Trail, Stack/reach ratio, 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: 12
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 30.7 in
Highest gear: 137.1 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Tire width: 28c
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

30.7 gear inches

This value is below the central range for this class.

Cohort: Road / Race Model year: 2022
Sample: 676 bicycles with this information
Coverage: 77.4% of the class

Highest gear

137.1 gear inches

This value is within the central range for this class.

Cohort: Road / Race Model year: 2022
Sample: 676 bicycles with this information
Coverage: 77.4% of the class

Shifting

Electronic

439 of 873 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2022
Sample: 873 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.8 km/h
Highest gear: 52.5 km/h

Total gear range 446%

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: 30.7–137.1 gear inches
Class reference (p10–p90): 29.0–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Race Model year: 2022
Lowest gear: 676 bicycles with this information, 77.4% of the class
Highest gear: 676 bicycles with this information, 77.4% 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 2022 builds

Differences across 2022 builds
Specification	This bicycle BH RS1 4.5	BH RS1 3.0	BH RS1 3.5	BH RS1 4.0	BH RS1 5.0
Drivetrain
Smallest chainring	36	36	36	35	36
Largest chainring	52	52	52	48	52
Rear sprockets	12	Not informed	12	12	12
Smallest sprocket	11	11	11	10	11
Largest sprocket	34	34	34	36	34
Lowest gear	30.7 in	30.7 in	30.7 in	28.2 in	30.7 in
Highest gear	137.1 in	137.1 in	137.1 in	139.2 in	137.1 in
Cockpit
Shifting	Electronic	Mechanical	Electronic	Electronic	Electronic
Other specifications
Wheel material	Aluminum	Aluminum	Aluminum	Aluminum	Carbon