BH Gravelx R 4.5

Name: BH Gravelx R 4.5
Brand: BH

2024 RoadGravel Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £3,399 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 12 40t / 11–44t
Gear range: 400%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

Components

13 of 15 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

Gravel X Carbon MonocoqueRacing Not identified

Suspension

1 part

Fork

Gravel X Evo Carbon 1.5 Racing Not identified

Drivetrain

5 parts

Brakes

1 part

Brakes
- SRAM Apex Disc

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 377mm

Stack 556mm

Wheelbase 1019mm

Head angle 71.0°

Seat angle 73.0°

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	366	370	377	387	398
Stackmm	510	540	556	577	598
Top tube lengthmm	503	527	548	567	587
Seat tube lengthmm	478	500	520	540	560
Head tube lengthmm	100	120	140	160	180
Head tube angle	69.5°	70.5°	71°	71.5°	72°
Seat tube angle	75°	73.75°	73°	72.75°	72.5°
Chainstay lengthmm	426	426	426	426	426
Wheelbasemm	1000	1009	1019	1031	1044
Front centermm	584	591	602	614	626
Bottom bracket dropmm	67	75	73	73	71
Bottom bracket heightmm	282	274	276	276	278
Fork rakemm	45	52	53	53	52
Trailmm	82	68	64	61	59
Stack/reach ratio	1.39	1.46	1.48	1.49	1.50

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: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 44
Lowest gear: 26.4 in
Highest gear: 105.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Tire width: 40c
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

26.4 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2024
Sample: 1,716 bicycles with this information
Coverage: 76.6% of the class

Highest gear

105.5 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2024
Sample: 1,716 bicycles with this information
Coverage: 76.6% of the class

Shifting

Electronic

771 of 2,238 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2024
Sample: 2,238 bicycles with this information
Coverage: 99.9% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.1 km/h
Highest gear: 40.4 km/h

Total gear range 400%

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: 26.4–105.5 gear inches
Class reference (p10–p90): 23.2–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2024
Lowest gear: 1716 bicycles with this information, 76.6% of the class
Highest gear: 1716 bicycles with this information, 76.6% 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 2024 builds

Differences across 2024 builds
Specification	This bicycle BH Gravelx R 4.5	BH Gravelx 1.0	BH Gravelx 2.0	BH Gravelx 2.5	BH Gravelx ALU 1.0	BH Gravelx ALU 2.0
Frame
Frame material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Drivetrain
Front chainrings	1	2	Not informed	2	2	2
Smallest chainring	40	Not informed	Not informed	30	Not informed	34
Largest chainring	40	Not informed	Not informed	46	Not informed	50
Rear sprockets	12	Not informed	Not informed	Not informed	Not informed	11
Largest sprocket	44	36	36	34	36	34
Lowest gear	26.4 in	Not informed	Not informed	25.6 in	Not informed	29.0 in
Highest gear	105.5 in	Not informed	Not informed	121.3 in	Not informed	131.8 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Mechanical disc	Hydraulic disc
Cockpit
Shifting	Electronic	Mechanical	Mechanical	Mechanical	Mechanical	Mechanical
Other specifications
Tire width	40c	38c	38c	40c	38c	38c
Bottom bracket standard	Not informed	Not informed	Not informed	Not informed	Not informed	386 EVO