2018 Specialized Fatboy 20

2018 Specialized Fatboy 20
MSRPUS$ 770
Wheel Size20″
FrameAluminum
SuspensionRigid
Gearing1 × 9
Drivetrain
SRAM X4
Brand
Specialized

Specialized’s 2018 Fatboy 20 is a modest component level aluminum frame fatbike bike.

Build
FrameFully butted Specialized A1 Premium Aluminum, ZeroStack head tube, 100mm-wide threaded bottom bracket, 170mm rear hub spacing
ForkSpecialized A1 Premium Aluminum, 1-1/8"" alloy steerer
Bottom BracketSquare taper, 100x151.5mm, sealed bearings
StemAlloy, 7-degree rise, 31.8mm clamp
HandlebarSpecialized, alloy, 9-degree backsweep, 4-degree upsweep, 680mm width, 31.8mm
SaddleSpecialized Youth, steel rails
SeatpostAlloy, single-bolt, 27.2mm
PedalsPlatform
GripsSpecialized Body Geometry XCT, lock-on
Components
Rear DerailleurSRAM X4, long cage, 6-/7-/8-speed
Crank9-speed, 28T chainring w/ chainguard
CassetteSunrace, 9-Speed, 11-36t
ChainKMC X9, 9-speed w/ reusable MissingLink™
BrakesTektro Aries, mechanical disc, organic pads, 160mm rotor
Wheels
Rims20"" disc, alloy construction, 68mm internal width, 32h
SpokesStainless, 14g
Front HubStout 135, loose ball bearings, 10x135 QR, 32h
Rear HubStout 170, loose ball bearings, 9-/10-speed cassette body, 10x170mm QR, 32h
TiresGround Control Fat, 60 TPI, wire bead, 20x4.0""
Gearing
1 × 99 speed
2018 Specialized Fatboy 20
15 mph
Category Average Virtual Bike
26 mph

The 2018 Fatboy 20 is easier to ride up hills than similar bikes.

The 2018 Fatboy 20 won‘t keep up with similar bikes while riding downhill or sprinting.

Geometry

Oh snap! This frame was drawn from the actual bike geometry measurements. Roll over the table below to highlight frame dimensions.

Size
BB Drop 25
Chainstay Length 390
Seat Tube Angle72.0
Seat Tube Length 280
Stack 464
Reach 319
Head Tube Angle69.0
Head Tube Length 120
Wheelbase 914
Top Tube Length 470
BB Height 264
Front Center 526
Standover Height 583
🐐 Measurements listed in millimeters and degrees
Replacement Parts
MSRPUS$ 770
Wheel Size20″
FrameAluminum
SuspensionRigid
Gearing1 × 9
Drivetrain
SRAM X4
Brand
Specialized
Gearing
1 × 99 speed
2018 Specialized Fatboy 20
15 mph
Category Average Virtual Bike
26 mph

The 2018 Fatboy 20 is easier to ride up hills than similar bikes.

The 2018 Fatboy 20 won‘t keep up with similar bikes while riding downhill or sprinting.

Replacement Parts
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