Pivot LES FAT Pro XT

2025 MountainFat bike Manufacturer page

Last known price: $4,799

Prices shown first for United States
Suspension: Rigid
Wheels: 27.5″
Drivetrain: 1 × 12 30t / 10–51t
Gear range: 510%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 162.6–174
MD 171–182
LG 179–188

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

LES Fat Not identified

Suspension

2 parts

Fork
- Pivot
Rear shock

None

Drivetrain

5 parts

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 417mm

Stack 618mm

Wheelbase 1122mm

Head angle 69.0°

Seat angle 72.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	396	417	434
Stackmm	604	618	633
Top tube lengthmm	582	607	629
Seat tube lengthmm	381	432	483
Head tube lengthmm	102	117	133
Head tube angle	69°	69°	69°
Seat tube angle	72°	72°	72°
Chainstay lengthmm	437	437	437
Wheelbasemm	1096	1122	1145
Front centermm	663	689	712
Bottom bracket dropmm	44	44	44
Bottom bracket heightmm	311	311	311
Standover heightmm	686	718	755
Fork rakemm	47	47	47
Trailmm	86	86	86
Stack/reach ratio	1.53	1.48	1.46

Not published by the manufacturer: 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: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 16.2 in
Highest gear: 82.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 3.8″
Travel: Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 27.5″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.2 km/h
Highest gear: 31.6 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: 16.2–82.5 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 2025 builds
Specification	This bicycle Pivot LES FAT Pro XT	Pivot LES SL Brunch Ride	Pivot LES SL Brunch Ride 70/90	Pivot LES SL Drop Bar Ride GX Eagle Transmission	Pivot LES SL Pro X01	Pivot LES SL Pro w/ Carbon Wheels X01
Frame
Fork material	Carbon	Not informed	Not informed	Not informed	Not informed	Not informed
Suspension
Suspension configuration	Rigid	Hardtail	Hardtail	Hardtail	Hardtail	Hardtail
Front travel	Not informed	100 mm	100 mm	100 mm	100 mm	100 mm
Drivetrain
Smallest chainring	30	32	32	32	34	34
Largest chainring	30	32	32	32	34	34
Largest sprocket	51	51	52	52	52	52
Lowest gear	16.2 in	18.2 in	17.9 in	17.9 in	19.0 in	19.0 in
Highest gear	82.5 in	92.8 in	92.8 in	92.8 in	98.6 in	98.6 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Electronic	Mechanical	Mechanical
Derailleur hanger	Not informed	Not informed	Not informed	UDH	Not informed	Not informed
Other specifications
Suspension	Rigid	Hardtail	Hardtail	Hardtail	Hardtail	Hardtail
Tire width	3.8″	2.25″	2.25″	2.25″	2.4″	2.4″
Wheel size	27.5″	29″	29″	29″	29″	29″
Fork spring	Not informed	Air	Air	Air	Air	Air