2017 Specialized Fatboy 20

Mid-range component level aluminum frame fatbike bike


2017 Specialized Fatboy 20
  • MSRP $770
  • Suspension Rigid
  • Frame Aluminum
  • Fork Aluminum
  • Wheels 20″
  • Drivetrain 1 × 9
  • Groupset 
    SRAM X4
  • Brakes Mechanical Disc

1 × 9 — 9 speed

2017 Specialized Fatboy 20
15 mph
Similar Bikes
26 mph

The 2017 Fatboy 20 is easier to ride up hills than similar bikes.

The 2017 Fatboy 20 won‘t keep up with similar bikes while riding downhill or sprinting.

Frame2015 Fatboy 24", fully butted 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, internal bearings
StemAlloy, 7-degree rise, 31.8mm clamp
HandlebarSpecialized, alloy, 9-degree backsweep, 4-degree upsweep, 15mm rise, 600mm width, 31.8mm
SaddleSpecialized Youth, steel rails
SeatpostAlloy, single bolt, 27.2mm
GripsSpecialized Body Geometry XCT Women's, lock-on
Rear DerailleurSRAM X4, long cage, 6-/7-/8-speed
ShiftersSRAM, 9-speed, trigger
CassetteSunrace, 9-speed, 11-36t
ChainKMC X9, 9-speed w/reusable MissingLink
BrakesTektro Aries, mechanical disc, organic pads, 160mm rotor
SpokesStainless, 14g
Front HubSpecialized Stout XC 135, disc alloy, loose ball bearings, bolt-on axle, 32h
Rear HubSpecialized disc, loose ball bearings, 9-/10-speed cassette body, 10mm steel axle, 32h
TiresGround Control Fat, 20x4.0", 60TPI, wire bead
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2017 Specialized Fatboy 20