BH Expert 4.0

Name: BH Expert 4.0
Brand: BH

2026 MountainCross-country Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £899 Last known price
Fork travel: 100 mm
Wheels: 29″
Drivetrain: 1 × 12 32t / 10–51t
Gear range: 510%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 151–164
SM 159–170
MD 165–177
LG 171–184

Components

16 of 17 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

Expert Alloy 29", 148x12, Integrated Headset 42ACB Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

6 parts

Bottom bracket
- Shimano SM-BB52
SM-BB52
Cassette
- Shimano Deore CS-M6100 12 speeds
CS-M6100
Chain
- Shimano Deore CN-M6100
CN-M6100
Crankset
- Shimano FC-MT510-1 12 speeds 32t
FC-MT510
Rear derailleur
- Shimano Deore RD-M6100 12 speeds
RD-M6100
Shifters
- Shimano Deore

Brakes

1 part

Brakes
- Shimano BL-MT201
BL-MT201

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Grips
- BH
Handlebar
- BH
Headset
- BH
Saddle
- BH
Seatpost
- BH
Stem
- BH

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Reach 397mm

Stack 619mm

Wheelbase 1091mm

Head angle 68.5°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	380	397	423	435
Stackmm	600.6	619.2	619.2	628
Top tube lengthmm	552.2	580	607	622
Seat tube lengthmm	350	400	440	480
Head tube lengthmm	90	110	110	120
Head tube angle	68.5°	68.5°	68.5°	68.5°
Seat tube angle	74°	73.5°	73.5°	73.5°
Chainstay lengthmm	435	435	435	435
Wheelbasemm	1069.7	1091	1121	1136
Front centermm	636.7	688.3	686	701
Bottom bracket dropmm	60	60	60	60
Bottom bracket heightmm	314	314	314	314
Fork rakemm	43	40	44	43
Trailmm	101	105	100	101
Stack/reach ratio	1.58	1.56	1.46	1.44

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: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 18.2 in
Highest gear: 92.8 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: BSA
Fork spring: Air
Tire width: 2.2″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

2 measures

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

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2026
Sample: 1,209 bicycles with this information
Coverage: 90.0% of the class

Shifting

Mechanical

156 of 1,318 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2026
Sample: 1,318 bicycles with this information
Coverage: 98.2% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 35.5 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: 18.2–92.8 gear inches

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
Specification	This bicycle BH Expert 4.0	BH Expert 4.5	BH Expert 5.0	BH Expert 5.5	BH Expert Junior 20	BH Expert Junior 20 Susp
Suspension
Suspension configuration	Hardtail	Hardtail	Hardtail	Hardtail	Rigid	Hardtail
Front travel	100 mm	100 mm	100 mm	100 mm	Not informed	Not informed
Drivetrain
Front chainrings	1	1	1	1	Not informed	1
Smallest chainring	32	32	32	32	Not informed	32
Largest chainring	32	32	32	32	Not informed	32
Rear sprockets	12	12	12	12	7	7
Smallest sprocket	10	10	10	10	14	14
Largest sprocket	51	51	51	51	34	34
Lowest gear	18.2 in	18.2 in	18.2 in	18.2 in	Not informed	18.8 in
Highest gear	92.8 in	92.8 in	92.8 in	92.8 in	Not informed	45.7 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Rim brake	Rim brake
Other specifications
Bottom bracket standard	BSA	BSA	BSA	BSA	Not informed	Not informed
Fork spring	Air	Coil	Not informed	Air	Not informed	Coil
Suspension	Hardtail	Hardtail	Hardtail	Hardtail	Rigid	Hardtail
Tire width	2.2″	2.2″	2.2″	2.2″	Not informed	Not informed
Wheel size	29″	29″	29″	29″	20″	20″