Specialized Fatboy Trail

2016 MountainFat bike Manufacturer page

Wheels: 26″
Drivetrain: 1 × 10 28t / 11–40t
Gear range: 364%
Frame: Aluminum
Brakes: Hydraulic disc

Not published by the manufacturer

Sizes and geometry

Components

17 of 22 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

Specialized M4 aluminum, fully-butted tubing w/ smooth welds, tapered head tube, post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger Not identified

Suspension

1 part

Fork
- RockShox Bluto

Drivetrain

6 parts

Bottom bracket
- Samox
Cassette
- SunRace 11–40t
Chain
- KMC
Crankset
- Specialized 28t
Rear derailleur
- SRAM X7 TYPE 2.1 10 speeds
Shifters
- SRAM X7

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- Specialized
Rear hub
- Specialized
Rims
- Specialized
Spokes

Stainless, 14g, black Not identified
Tires
- Specialized

Cockpit and contact points

7 parts

Grips
- Specialized
Handlebar
- Specialized
Headset

1-1/8"" upper, 1-1/2"" lower, threadless, Campy style, cartridge bearings Not identified
Pedals

Nylon, 1 pc. body, 9/16"", w/ reflectors Not identified
Saddle

Body Geometry Henge Sport, steel rails, 143mm Not identified
Seatpost
- Tranz-X
Stem
- Specialized

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum

Suspension

Suspension configuration: Hardtail

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 28
Largest chainring: 28
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 40
Lowest gear: 18.2 in
Highest gear: 66.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: PF30
Fork spring: Air
Tire width: 4.6″
Travel: Front: Additional specification: Not available: No
Wheel material: Aluminum
Wheel size: 26″

Technical analysis

2 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 / Fat bike Model year: 2016
Sample: 45 bicycles with this information
Coverage: 97.8% of the class

Highest gear

66.2 gear inches

This value is within the central range for this class.

Cohort: Mountain / Fat bike Model year: 2016
Sample: 45 bicycles with this information
Coverage: 97.8% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 25.3 km/h

Total gear range 364%

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: 18.2–66.2 gear inches
Class reference (p10–p90): 15.9–85.1 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Fat bike Model year: 2016
Lowest gear: 45 bicycles with this information, 97.8% of the class
Highest gear: 45 bicycles with this information, 97.8% 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 2016 builds

Differences across 2016 builds
Specification	This bicycle Specialized Fatboy Trail	Specialized Fatboy	Specialized Fatboy Comp	Specialized Fatboy Pro Trail	Specialized Fatboy SE
Frame
Fork material	Aluminum	Carbon	Carbon	Aluminum	Aluminum
Suspension
Suspension configuration	Hardtail	Rigid	Rigid	Hardtail	Rigid
Drivetrain
Front chainrings	1	1	1	1	2
Smallest chainring	28	28	28	28	22
Largest chainring	28	28	28	28	36
Rear sprockets	10	10	10	11	10
Smallest sprocket	11	11	11	10	11
Largest sprocket	40	40	40	42	36
Lowest gear	18.2 in	18.2 in	18.2 in	17.3 in	15.9 in
Highest gear	66.2 in	66.2 in	66.2 in	72.8 in	85.1 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Mechanical disc
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Rigid seatpost
Other specifications
Fork spring	Air	Not informed	Not informed	Air	Not informed
Suspension	Hardtail	Rigid	Rigid	Hardtail	Rigid
Travel	Configuration: HardtailFront: Additional specification: Not available: No	Configuration: Rigid	Configuration: Rigid	Configuration: HardtailFront: Additional specification: Not available: No	Configuration: Rigid