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Specialized Fatboy 20

Specialized Fatboy 20


Regular price $709.95 USD
Regular price $709.95 USD Sale price $709.95 USD
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  • 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.
  • The SRAM X4 9-speed rear derailleur provides plenty of gears for your little ones to make it up and down almost anything, while being tough enough for abuse.

Product Information

Bottom Bracket

Square Taper, Sealed Cartridge Bearings, 100mm Shell, 164mm Axle

Brake Levers

Tektro, Jr V-brake


Sunrace, 9-speed, 11-36t


Kmc X9, 9-speed W/ Reusable Missinglink™


Alloy, 28t


Forged Alloy, 32t, W/ Chainguard


Specialized A1 Premium Aluminum, 1-1/8" Alloy Steerer


Specialized A1 Premium Aluminum, Fully-butted W/ Smooth Welds, Zerostack Head Tube, 170mm Rear Hub Spacing, Replaceable Alloy Derailleur Hanger

Front Brake

Tektro Aries, Mechanical Disc, Organic Pads, 160mm Rotor

Front Hub

Stout 135, Loose Ball Bearings, 10x135 Qr, 32h

Front Tire

Ground Control Fat, 60 Tpi, Wire Bead, 20x4.0"


Specialized, Double-butted 6061 Alloy, 9-degree Backsweep, 4-degree Upsweep, 31.8mm, 720mm Width

Inner Tubes

20x4.0" Tube, Presta Valve

Rear Brake

Tektro Aries, Mechanical Disc, Organic Pads, 160mm Rotor

Rear Derailleur

Sram X4, Long Cage

Rear Hub

Specialized 170, Hi Hi Disc, Alloy, Double-sealed Loose Ball Bearings, Qr, 32h

Rear Tire

Ground Control Fat, 60 Tpi, Wire Bead, 20x4.0"


24" Disc, Alloy Construction, 68mm Internal Width, 32h

Shift Levers

Sram X4, 9-speed, Trigger


Stainless, 14g

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