BMC Roadmachine Four

Name: BMC Roadmachine Four
Brand: BMC

2021 RoadEndurance Manufacturer page

Last known price: $2,799

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 11 34–50t / 11–32t
Gear range: 428%
Weight: 8.5 kg 18.7 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

47cm Not informed
51cm 165–174
54cm 172–180
56cm 178–186
58cm 184–192
61cm 190+

Components

14 of 18 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

Roadmachine Premium Carbon with Tuned Compliance Concept Endurance, • ICS Technology, stealth cable routing, • TCC Endurance compliance level, • Internal Cable Routing • PF86 bottom bracket, • 12x142mm thru-axle Not identified

Suspension

1 part

Fork

Roadmachine 01 Premium Carbon with Tuned Compliance Concept Endurance, • ICS Technology, • TCC Endurance compliance level, • Internal Cable Routing, • 12x100mm thru-axle, • 50mm offset (Size 47-51), 45mm offset (Size 54-61) Not identified

Drivetrain

7 parts

Bottom bracket

BB86/BB92, press-fit Not identified
Cassette
- Shimano 105 11–32t
Chain
- Shimano 105
Crankset
- Shimano 105 34t
Front derailleur
- Shimano 105
Rear derailleur
- Shimano 105
Shifters
- Shimano 105

Brakes

1 part

Brakes
- Shimano 105
SM-RT70

Wheels and tires

4 parts

Front hub
- Formula CL-712
CL-712RXC-1425
Rear hub
- Formula CL-712
CL-712RXC-1425
Rims
- Mavic
Tires
- Vittoria

Cockpit and contact points

4 parts

Handlebar
- BMC
Saddle
- Fizik
Seatpost

01 Premium Carbon D-Shape Seatpost 15mm offset Not identified
Stem
- BMC

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 54cm

Table

Reach 386mm

Stack 562mm

Wheelbase 997mm

Head angle 72.0°

Seat angle 74.2°

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 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	374	382	386	390	394	398
Stackmm	516	541	562	586	610	644
Top tube lengthmm	522	532	546	556	568	583
Seat tube lengthmm	420	457	500	522	539	573
Head tube lengthmm	112	139	156	181	206	242
Head tube angle	71.2°	71.2°	72°	72°	72°	72°
Seat tube angle	74.2°	74.2°	74.2°	74.2°	74.2°	74.2°
Chainstay lengthmm	410	410	410	410	410	410
Wheelbasemm	982	999	997	1008	1020	1035
Front centermm	583	599	597	609	621	635
Bottom bracket dropmm	71	71	71	71	71	71
Bottom bracket heightmm	265	265	265	265	265	265
Fork rakemm	50	50	45	45	45	45
Trailmm	63	63	63	63	63	63
Stack/reach ratio	1.38	1.42	1.46	1.50	1.55	1.62
Suspension and parts
Crank lengthmm	170	170	172.5	172.5	175	175
Handlebar widthmm	400	420	420	420	420	440
Stem lengthmm	90	90	100	110	110	120
Stem angle	8°	8°	8°	8°	8°	8°
Seatpost lengthmm	330	380	380	380	380	430

Not published by the manufacturer: Standover height, Front travel, Rear travel and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon
Bicycle weight: 8.5 kg

18.7 lb
Weight limit: 110 kg

242.5 lb

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

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BB86/BB92
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

30.8 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2021
Sample: 465 bicycles with this information
Coverage: 90.4% of the class

Highest gear

131.8 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2021
Sample: 465 bicycles with this information
Coverage: 90.4% of the class

Shifting

Mechanical

130 of 513 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2021
Sample: 513 bicycles with this information
Coverage: 99.8% 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): 29.0–137.1 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2021
Lowest gear: 465 bicycles with this information, 90.4% of the class
Highest gear: 465 bicycles with this information, 90.4% 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 2021 builds
Specification	This bicycle BMC Roadmachine Four	BMC Roadmachine 01 Five	BMC Roadmachine 01 Four	BMC Roadmachine 01 ONE	BMC Roadmachine 01 Three	BMC Roadmachine 01 TWO
Frame
Bicycle weight	8.5 kg	Not informed	7.85 kg	7.55 kg	7.85 kg	7.24 kg
Frame weight	Not informed	1 kg	Not informed	Not informed	Not informed	Not informed
Drivetrain
Smallest chainring	34	34	34	33	33	34
Largest chainring	50	50	50	46	46	50
Rear sprockets	11	12	11	12	12	11
Smallest sprocket	11	11	11	10	10	11
Largest sprocket	32	34	32	33	36	30
Lowest gear	30.8 in	29.0 in	30.8 in	29.0 in	26.6 in	32.9 in
Highest gear	131.8 in	131.8 in	131.8 in	133.4 in	133.4 in	131.8 in
Cockpit
Shifting	Mechanical	Electronic	Electronic	Electronic	Electronic	Electronic
Other specifications
Wheel material	Aluminum	Carbon	Carbon	Carbon	Carbon	Carbon
Tire clearance	Not informed	Maximum tire width: 33c	Not informed	Not informed	Not informed	Not informed