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Today’s DealsFatboy Pro
A 26″ aluminum frame hardtail fat bike with ultra high-end components.
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| Frame | Aluminum |
|---|---|
| Suspension | Hardtail |
| Fork | RockShox Bluto RL |
| Wheels | 26″ Aluminum |
| Drivetrain | 1 × 11 |
| Groupset | X01 |
| Brakes | Shimano XT Hydraulic Disc |
| Seatpost | Dropper |
158cm – 171cm
168cm – 180cm
178cm – 189cm
186cm – 199cm
🐐 Estimated
None yet.
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Summary
The Specialized Fatboy is celebrated for its versatility and performance across various conditions, from snow to sand, making it a standout in the fatbike category. Its design emphasizes stability and traction, with features like wide tires and a carbon fork enhancing ride quality. While it excels in challenging terrains, some reviews note its handling could be more nimble in tight spaces.
Excellent performance on snow and sand due to wide tires
Lightweight and efficient design for a fatbike
Stable and comfortable ride with carbon fork
Encourages active outdoor play, especially among kids
Aggressive geometry for responsive handling
Less nimble in quick, tight singletrack due to long chainstays
Requires attention in high-speed corners and steep trails
Some components may need upgrading for optimal performance
The Fatboy has certainly gone through the most drastic evolution, transforming from a Y-shaped BMX rig to a chopper-style beach cruiser to a high-performance fatbike.
One of the fastest fatties out there
There is something about the Specialized Fatboy 20 that makes children happy, even if it doesn’t make sense to adults.
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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.

Nov 2014 · Canadian Cycling Magazine
Specialized Canada has announced that two fat bikes for young riders will be available in mid-December. Both the Specialized Fatboy 24 and Fatboy 20 will

Nov 2014 · MBA Action
Let's kick back and have some fun
Mar 2014 · Francis Cebedo
Fatbiking is about fun, adventure, determination, accomplishment, and a little bit of insanity. Specialized has rolled all of this up into a nice package that makes me actually want to go out in 12 degree temperatures to ride in the snow. - Mtbr.com
| Frame | Specialized M4 Premium Aluminum, fully butted w/ smooth welds, tapered headtube, post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger BB Standard: PF30, 100mm, Press Fit |
|---|---|
| Fork | RockShox Bluto RL, Solo Air spring, TurnKey damping, tapered alloy steerer, external rebound adj. 32mm alloy stanchions w/ mag lowers, disc mount, QR 15mm thru-axle for 150mm hub spacing Spring Type: Air |
| Bottom Bracket | PF30, 100mm, press-fit |
| Headset | 1-1/8"" upper, 1-1/2"" lower, integrated Campy style, sealed cartridge bearings, split crown race, 3.8mm cone spacer |
| Stem | Specialized, 3D forged alloy, 4-bolt, 6-degree rise, anti-corrosion hardware |
| Handlebar | Specialized, mini rise, 7050 alloy, 8-backsweep, 6-upsweep, 10mm rise, 31.8mm |
| Saddle | Body Geometry mountain, hollow Cr-Mo rails, 143mm |
| Seatpost | Command Post BlackLite, alien head design, single bolt head, w/ remote adjust lever, 30.9mm, S: 100mm travel, M/L/XL: 125mm Type: Dropper |
| Pedals | Specialized Bennies, 6061 alloy body, sealed cartridge, 4.5mm removable pins |
| Grips | Specialized Body Geometry XC Contour, Kraton w/ gel, lock-on, closed end |
| Rear Derailleur | SRAM X01, 11-speed, carbon cage |
|---|---|
| Crank | Race Face Next SL, PF30 BB, 100mm spindle, 30T, spiderless |
| Shifters | SRAM X01,11-speed, trigger |
| Cassette | SRAM X1, 11-speed, 11-42 |
| Chain | KMC X11L, 11-speed, reusable Missing Link |
| Brakes | Front: Shimano XT, hydraulic disc, Ice Tech resin pads w/ fins, Ice Tech rotor, Rear: Shimano XT, hydraulic disc, Ice Tech resin pads w/ fins, Ice Tech rotor Type: Shimano XT Hydraulic Disc |
| Brake Levers | Shimano XT, hydraulic, w/ reach adjust |
| Rims | Specialized Fatboy SL, alloy disc, single wall, 90mm wide, sleeve joint, hookless design, 32h |
|---|---|
| Spokes | Stainless, 2.0/1.8/2.0mm |
| Front Hub | Specialized Hi Lo disc, sealed cartridge bearings, 15mm thru-axle, 150mm wide, 32h |
| Rear Hub | Specialized Hi Lo disc, alloy, sealed cartridge bearings, XD driver body, 190mm wide, QR, 32h |
| Tires | Front: Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6"", Rear: Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6"" |
First added 9 July
Last updated 9 July
Not listed for 2,530 days