Fatboy 20
A 20″ aluminum frame rigid fat bike with mid-range components and mechanical disc brakes.
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Manufacturer Price
$770Frame | Aluminum |
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Suspension | Rigid |
Fork | Aluminum |
Wheels | 20″ Aluminum |
Drivetrain | 1 × 9 |
Groupset | X4, SRAM |
Brakes | Mechanical Disc |
For This Bike
May 2016 · Seb Stott
Despite a couple of component niggles, the Fatboy has huge potential to dominate any fat bike race. Buy if you want a fast, capable and well-appointed fatty to race with
Light, speedy, well finished and perfect for mile-munching
You'll want to switch the stock tyres for snow, 203mm rotors are overkill, gearing is a little narrow
Mar 2016 · Evan Phillips
Fatbikes are polarizing, especially for our kids. But are they any good for lightweight shredders? We find out with the Specialized Fatboy 20.
Feb 2015
We reviewed Specialized's Fatboy Expert on the frigid, snowy trails of Marquette, MI to see how it held up to proper winter conditions.
Frame | Fully butted Specialized A1 Premium Aluminum, ZeroStack head tube, 100mm-wide threaded bottom bracket, 170mm rear hub spacing BB Standard: BSA, 100mm, Threaded |
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Fork | Specialized A1 Premium Aluminum, 1-1/8" alloy steerer |
Bottom Bracket | Square taper, 100x151.5mm, sealed bearings |
Stem | Alloy, 7-degree rise, 31.8mm clamp |
Handlebar | Specialized, alloy, 9-degree backsweep, 4-degree upsweep, 680mm width, 31.8mm |
Saddle | Specialized Youth, steel rails |
Seatpost | Alloy, single-bolt, 27.2mm Type: Rigid |
Pedals | Platform |
Grips | Specialized Body Geometry XCT, lock-on |
Rear Derailleur | SRAM X4, long cage, 6-/7-/8-speed |
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Crank | 9-speed, 28T chainring w/ chainguard |
Shifters | SRAM, trigger, 9-speed |
Cassette | Sunrace, 9-Speed, 11-36t |
Chain | KMC X9, 9-speed w/ reusable MissingLink™ |
Brakes | Front: Tektro Aries, mechanical disc, organic pads, 160mm rotor, Rear: Tektro Aries, mechanical disc, organic pads, 160mm rotor Type: Mechanical Disc |
Rims | 20" disc, alloy construction, 68mm internal width, 32h |
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Spokes | Stainless, 14g |
Front Hub | Stout 135, loose ball bearings, 10x135 QR, 32h |
Rear Hub | Stout 170, loose ball bearings, 9-/10-speed cassette body, 10x170mm QR, 32h |
Tires | Front: Ground Control Fat, 60 TPI, wire bead, 20x4.0", Rear: Ground Control Fat, 60 TPI, wire bead, 20x4.0" |
Last updated November 6
Not listed for 1,636 days