Fatboy 20

So Junior wants to get rad just like Mom and Dad? Well, our Fatboy 20 has your kid's name all over it. It has all the same benefits as our "big kid" Fatboy, only it's built on 20-inch wheels for an ultra-low standover height and kids' size. The family that eats trails together stays together.

So Junior wants to get rad just like Mom and Dad? Well, our Fatboy 20 has your kid's name all over it. It has all the same benefits as our "big kid" Fatboy, only it's built on 20-inch wheels for an ultra-low standover height and kids' size. The family that eats trails together stays together.

Select

Part No:
Part No:
    • FRAME

      2015 Fatboy 24", fully butted A1 Premium Aluminum, ZeroStack head tube, 100mm wide threaded bottom bracket, 170mm rear hub spacing

    • FORK

      Specialized A1 Premium Aluminum, 1-1/8" alloy steerer

    • FRONT HUB

      Specialized Stout XC 135, disc alloy, loose ball bearings, bolt-on axle, 32h

    • REAR HUB

      Specialized disc, loose ball bearings, 9-/10-speed cassette body, 10mm steel axle, 32h

    • SPOKES

      Stainless, 14g

    • INNER TUBES

      20x4.0" tube, Presta valve

    • FRONT TIRE

      Ground Control Fat, 20x4.0", 60TPI, wire bead

    • REAR TIRE

      Ground Control Fat 20x4.0", 60TPI, wire bead

    • CRANKSET

      9-speed, 28T chainring w/chainguard

    • BOTTOM BRACKET

      Square taper, 100x151.5mm, internal bearings

    • SHIFT LEVERS

      SRAM, 9-speed, trigger

    • REAR DERAILLEUR

      SRAM X4, long cage, 6-/7-/8-speed

    • CASSETTE

      Sunrace, 9-speed, 11-36t

    • CHAIN

      KMC X9, 9-speed w/reusable MissingLink

    • FRONT BRAKE

      Tektro Aries, mechanical disc, organic pads, 160mm rotor 

    • REAR BRAKE

      Tektro Aries, mechanical disc, organic pads, 160mm rotor 

    • HANDLEBARS

      Specialized, alloy, 9-degree backsweep, 4-degree upsweep, 15mm rise, 600mm width, 31.8mm

    • GRIPS

      Specialized Body Geometry XCT Women's, lock-on

    • STEM

      Alloy, 7-degree rise, 31.8mm clamp

    • SADDLE

      Specialized Youth, steel rails

    • SEATPOST

      Alloy, single bolt, 27.2mm

    • SEAT BINDER

      Alloy, 31.8mm

    • PEDALS

      Platform

    Specifications subject to change without notice.

So Junior wants to get rad just like Mom and Dad? Well, our Fatboy 20 has your kid's name all over it. It has all the same benefits as our "big kid" Fatboy, only it's built on 20-inch wheels for an ultra-low standover height and kids' size. The family that eats trails together stays together.
  • The frame features an A1 Premium Aluminum construction that provides the ideal blend of efficiency and durability, while the geometry creates a roomy top tube and short chainstays for easy climbing and confident descending.
  • Our A1 Premium Aluminum fork is lightweight and pairs up perfectly with the fat wheel system to soak up trail chatter and bumps.
  • Our Fatboy alloy rims serve as the foundation of a wheelset that's dependable, rugged, and efficient. So whether Junior is doing some trail riding or plowing through the snow, these wheels will be the perfect mix of performance and strength.
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Please contact your Specialized retailer to confirm availability.

Geometry

  20.0 11
Stack 464mm
Reach 319mm
Head-Tube Length 120mm
Head-Tube Angle 69°
B-B Height 264mm
B-B Drop 25mm
Trail 75mm
Fork Length (full) 360mm
Fork Rake/Offset 35mm
Front-Center 526mm
Chain-Stay Length 390mm
Wheelbase 914mm
Top-Tube Length (horizontal) 470mm
Bike Stand-Over Height 583mm
Seat-Tube Length 280mm
Seat-Tube Angle 72°
Crank Length 127mm
Handlebar Width 640mm
Stem Length 60mm
Seat Post Length 300mm
  • Stack 464mm
    Reach 319mm
    Head-Tube Length 120mm
    Head-Tube Angle 69°
    B-B Height 264mm
    B-B Drop 25mm
    Trail 75mm
    Fork Length (full) 360mm
    Fork Rake/Offset 35mm
    Front-Center 526mm
    Chain-Stay Length 390mm
    Wheelbase 914mm
    Top-Tube Length (horizontal) 470mm
    Bike Stand-Over Height 583mm
    Seat-Tube Length 280mm
    Seat-Tube Angle 72°
    Crank Length 127mm
    Handlebar Width 640mm
    Stem Length 60mm
    Seat Post Length 300mm
    View 20.0 Geometry
  • Stack
    Reach
    Head-Tube Length
    Head-Tube Angle
    B-B Height
    B-B Drop
    Trail
    Fork Length (full)
    Fork Rake/Offset
    Front-Center
    Chain-Stay Length
    Wheelbase
    Top-Tube Length (horizontal)
    Bike Stand-Over Height
    Seat-Tube Length
    Seat-Tube Angle
    Crank Length
    Handlebar Width
    Stem Length
    Seat Post Length
    View 11 Geometry