BMC Fourstroke LT

2023 MountainTrail Manufacturer page

BMC Fourstroke LT, color Deep Purple / Black

Last known price: $12,499

Prices shown first for United States
Travel: 120 / 120 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 32t / 10–52t
Gear range: 520%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM Not informed
MD 171–182
LG 180–189
XL 187+

Components

16 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

Fourstroke LT Carbon, APS Suspension System 120mm Travel, Fully Guided Internal Cable Routing, PF92 Bottom Bracket, Post Mount Disc, 12x148mm Boost Thru-Axle Not identified

Suspension

2 parts

Drivetrain

6 parts

Bottom bracket

BB86/BB92, press-fit Not identified
Cassette
- SRAM XG-1295 Eagle 12 speeds 10–52t
XG-1295
Chain
- SRAM X01 Eagle 12 speeds
Crankset
- SRAM X01 Eagle 11 speeds 32t
Rear derailleur
- SRAM X01 Eagle AXS 12 speeds
Shifters
- SRAM

Brakes

1 part

Brakes
- SRAM G2 Ultimate

Wheels and tires

4 parts

Cockpit and contact points

4 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 457mm

Stack 592mm

Wheelbase 1172mm

Head angle 66.5°

Seat angle 76.7°

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	437	457	477	500
Stackmm	584	592	600	615
Top tube lengthmm	576	599	623	651
Seat tube lengthmm	420	430	460	490
Head tube lengthmm	84	93.5	101	118
Head tube angle	66.5°	66.5°	66.5°	66.5°
Seat tube angle	76.7°	76.7°	76.7°	76.7°
Chainstay lengthmm	431	430.5	431	431
Wheelbasemm	1140	1172	1189	1219
Front centermm	711	743	760	790
Bottom bracket dropmm	38	38	38	38
Bottom bracket heightmm	336	336	336	336
Standover heightmm	727	727	727	767
Fork rakemm	44	44	44	44
Trailmm	115	115	115	124
Stack/reach ratio	1.34	1.30	1.26	1.23
Suspension and parts
Crank lengthmm	165	170	170	175
Handlebar widthmm	760	760	760	760
Stem lengthmm	40	50	50	60
Stem angle	6°	6°	6°	6°

Not published by the manufacturer: Front travel, Rear travel, Seatpost length and Dropper post travel.

Specifications

Frame and fork

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

242.5 lb

Suspension

Suspension configuration: Full suspension
Front travel: 120 mm
Rear travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 17.9 in
Highest gear: 92.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Dropper seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BB86/BB92
Fork spring: Air
Tire width: 2.4″
Wheel material: Carbon
Wheel size: 29″

Technical analysis

4 measures

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

Front travel

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2023
Sample: 2,195 bicycles with this information
Coverage: 97.5% of the class

Lowest gear

17.9 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2023
Sample: 1,627 bicycles with this information
Coverage: 72.2% of the class

Highest gear

92.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2023
Sample: 1,627 bicycles with this information
Coverage: 72.2% of the class

Shifting

Electronic

359 of 2,251 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2023
Sample: 2,251 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.8 km/h
Highest gear: 35.5 km/h

Total gear range 520%

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: 17.9–92.8 gear inches
Class reference (p10–p90): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2023
Lowest gear: 1627 bicycles with this information, 72.2% of the class
Highest gear: 1627 bicycles with this information, 72.2% 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 2023 builds

Differences across 2023 builds
Specification	This bicycle BMC Fourstroke LT	BMC Fourstroke 01 LTD	BMC Fourstroke 01 ONE	BMC Fourstroke 01 Team	BMC Fourstroke 01 TWO	BMC Fourstroke Four
Frame
Bicycle weight	Not informed	10.92 kg	11 kg	10.3 kg	11.72 kg	12.4 kg
Fork material	Not informed	Not informed	Not informed	Carbon	Not informed	Not informed
Suspension
Front travel	120 mm	100 mm	100 mm	120 mm	100 mm	100 mm
Rear travel	120 mm	100 mm	100 mm	100 mm	100 mm	100 mm
Drivetrain
Smallest chainring	32	34	Not informed	34	Not informed	Not informed
Largest chainring	32	34	Not informed	34	Not informed	Not informed
Smallest sprocket	10	10	Not informed	Not informed	10	Not informed
Largest sprocket	52	52	Not informed	Not informed	50	Not informed
Lowest gear	17.9 in	19.0 in	Not informed	Not informed	Not informed	Not informed
Highest gear	92.8 in	98.6 in	Not informed	Not informed	Not informed	Not informed
Cockpit
Seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Rigid seatpost
Shifting	Electronic	Electronic	Electronic	Electronic	Electronic	Mechanical
Other specifications
Fork spring	Air	Air	Not informed	Not informed	Not informed	Not informed
Tire width	2.4″	2.35″	2.35″	2.4″	2.35″	2.35″
Wheel material	Carbon	Carbon	Carbon	Aluminum	Aluminum	Aluminum