Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices
Today’s Deals2015 Specialized
Fatboy
A 26″ aluminum frame rigid fat bike with upper mid-range components.
Compare the full range
| Frame | Aluminum |
|---|---|
| Suspension | Rigid |
| Fork | Carbon |
| Wheels | 26″ Aluminum |
| Drivetrain | 2 × 10 |
| Groupset | X7 |
| Brakes | Tektro Gemini Hydraulic Disc |
158cm – 171cm
168cm – 180cm
178cm – 189cm
186cm – 199cm
🐐 Estimated
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
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.
BIKE MagazineOne of the fastest fatties out there
BikeRadarThere is something about the Specialized Fatboy 20 that makes children happy, even if it doesn’t make sense to adults.
Enduro Mountainbike MagazineFeedback?
View all reviews
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, Press Fit |
|---|---|
| Fork | Specialized FACT carbon, full monocoque, tapered steerer, 135mm hub spacing |
| Bottom Bracket | Samox, PF30 |
| Headset | 1-1/8"" upper, 1-1/2"" lower, Campy style, integrated 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, low rise, double butted 6061 alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 31.8mm |
| Saddle | Body Geometry mountain, steel rails, 143mm |
| Seatpost | Alloy, 2-bolt, 12.5mm offset, 30.9mm, anti-corrosion hardware Type: Rigid |
| Pedals | Resin test ride, w/ toe clips, CEN std. |
| Grips | SRAM, S-Series Grip Shift, 92mm |
| Rear Derailleur | SRAM X7 Type 2, 10-speed, medium cage |
|---|---|
| Front Derailleur | SRAM X7, 2x10, low direct mount |
| Crank | Custom Samox, 2x10, alloy, 100mm CNC spindle, w/ BB, 104/64mm BCD spider |
| Shifters | SRAM S-Series, Grip Shift, 10-speed |
| Cassette | Sunrace, 10-speed, 11-36 |
| Chain | KMC X10L, 10-speed, reusable Missing Link |
| Brakes | Front: Tektro Gemini, hydraulic disc, resin pads, Rear: Tektro Gemini, hydraulic disc, resin pads Type: Tektro Gemini Hydraulic Disc |
| Brake Levers | Tektro Gemini, hydraulic |
| Rims | Specialized Fatboy SL, alloy disc, single wall, 90mm wide, sleeve joint, hookless design, 32h |
|---|---|
| Spokes | Stainless, 14g |
| Front Hub | Specialized MTB Hi Lo disc, alloy, sealed cartridge bearings, 135mm 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 2,521 days