BMC Twostroke AL Three

Name: BMC Twostroke AL Three
Brand: BMC

2021 MountainCross-country Manufacturer page

BMC Twostroke AL Three, color Black Brushed

Last known price: $1,599

Prices shown first for United States
Wheels: 29″
Drivetrain: 1 × 12 32t / 10–51t
Gear range: 510%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM Not informed
MD 169–182
LG 180–192
XL 190+

Components

13 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

Twostroke AL Premium Aluminium, Hydroformed, Smoothwelded, • Internal Cable Routing, • BSA Threaded Bottom Bracket, • Post Mount Disc Not identified

Suspension

1 part

Fork
- RockShox Judy

Drivetrain

6 parts

Bottom bracket

BSA, 73mm, threaded Not identified
Cassette
- Shimano Deore CS-M6100-12 12 speeds 10–51t
CS-M6100-12
Chain
- Shimano Deore CN-M6100
CN-M6100
Crankset
- Shimano FC-MT510 12 speeds 32t
FC-MT510
Rear derailleur
- Shimano Deore RD-M6100 12 speeds
RD-M6100
Shifters
- Shimano Deore SL-M6100 12 speeds
SL-M6100

Brakes

1 part

Brakes
- Shimano BR-MT200
BR-MT200SM-RT10

Wheels and tires

4 parts

Front hub
- Shimano
Rear hub
- Shimano
Rims

XCD23 Not identified
Tires
- Vittoria

Cockpit and contact points

4 parts

Handlebar
- BMC
Saddle
- Selle Royal
Seatpost
- BMC
Stem

Forged 6061 Alloy Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 445mm

Stack 598mm

Wheelbase 1135mm

Head angle 67.0°

Seat angle 75.0°

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
Frame
Reachmm	422.5	445	465	485
Stackmm	588	598	608	623
Top tube lengthmm	597	618	638	658
Seat tube lengthmm	410	440	480	510
Head tube lengthmm	87	93.5	106	122.5
Head tube angle	67°	67°	67°	67°
Seat tube angle	75°	75°	75°	75°
Chainstay lengthmm	425	425	425	425
Wheelbasemm	1112.5	1135	1161	1185
Front centermm	696	715	741	767
Bottom bracket dropmm	64	64	64	64
Bottom bracket heightmm	310	310	310	310
Standover heightmm	725	730	735	750
Fork rakemm	44	44	44	44
Trailmm	109	109	109	109
Stack/reach ratio	1.39	1.34	1.31	1.29
Suspension and parts
Crank lengthmm	170	175	175	175
Handlebar widthmm	750	750	750	750
Stem lengthmm	60	60	60	70
Seatpost lengthmm	350	400	400	400

Not published by the manufacturer: Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Weight limit: 110 kg

242.5 lb

Suspension

Suspension configuration: Hardtail

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: Coil
Tire width: 2.25″
Travel: Front: Additional specification: Not available: No
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

3 measures

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

Lowest gear

18.2 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% of the class

Highest gear

92.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% of the class

Shifting

Mechanical

89 of 1,368 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,368 bicycles with this information
Coverage: 99.7% 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
Class reference (p10–p90): 17.4–100.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2021
Lowest gear: 1101 bicycles with this information, 80.3% of the class
Highest gear: 1101 bicycles with this information, 80.3% 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

Differences across 2021 builds
Specification	This bicycle BMC Twostroke AL Three	BMC Twostroke 01 Four	BMC Twostroke 01 ONE	BMC Twostroke 01 Three	BMC Twostroke 01 TWO	BMC Twostroke AL ONE
Frame
Frame material	Aluminum	Carbon	Carbon	Carbon	Carbon	Aluminum
Bicycle weight	Not informed	11.67 kg	9.52 kg	11.67 kg	9.9 kg	13.06 kg
Suspension
Front travel	Not informed	100 mm	100 mm	100 mm	100 mm	100 mm
Drivetrain
Smallest chainring	32	32	34	Not informed	34	32
Largest chainring	32	32	34	Not informed	34	32
Smallest sprocket	10	10	10	11	10	11
Largest sprocket	51	51	52	50	52	50
Lowest gear	18.2 in	18.2 in	19.0 in	Not informed	19.0 in	18.6 in
Highest gear	92.8 in	92.8 in	98.6 in	Not informed	98.6 in	84.4 in
Cockpit
Seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Not informed	Rigid seatpost	Not informed
Other specifications
Bottom bracket standard	BSA	BB86/BB92	BB86/BB92	BB86/BB92	BB86/BB92	BSA
Fork spring	Coil	Not informed	Not informed	Air	Air	Not informed