Pinch to Zoom

Rotate screen for larger image

2019 Fatboy

8 Reviews

Going fat isn't just a fun way to ride—it's a ride revolution. The security and control…

Product Details

Going fat isn't just a fun way to ride—it's a ride revolution. The security and control that the wheel system found on our Fatboy provides is unparalleled. You get dramatically more traction, grip, and floatation than with traditional mountain tires, all without sacrificing much to climbing efficiency.

The end result is easy to explain—you have way more fun. And to make sure of it, we built the Fatboy with a durable list of components, like a SRAM 11-speed one-by drivetrain, that are low-maintenance and eager to perform season after season. Have more fun—go fat.

The frame features an M5 alloy 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.
A FACT carbon fiber fork provides tons of compliance and absorbs chatter, while simultaneously keeping the overall weight of the bike down.
The SRAM NX one-by groupset keeps things simple, and is ready to take on the trail for the long haul.

Technical Specifications

FRAMESET

FRAME

Specialized M5 Aluminum, fully butted w/ Smooth Welds, tapered head tube and seat tube, forged post-mount 160mm disc dropouts, internal routing, forged bottom bracket shell, 197x12mm rear thru-axle

SUSPENSION

FORK

Specialized FACT carbon, 46mm offset, tapered steerer, 150mm axle

COCKPIT

HANDLEBARS

Stout Riser, double-butted alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 750mm width, 31.8mm

STEM

Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

GRIPS

Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness

SADDLE

Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm

SEATPOST

Specialized 2-bolt head, forged alloy, 8mm offset, micro-adjust, 30.9mm

SEAT BINDER

Alloy, bolt-type, 34.9mm

BRAKES

REAR BRAKE

SRAM Level T, hydraulic disc, 180/160mm

FRONT BRAKE

SRAM Level T, hydraulic disc, 200/180mm

DRIVETRAIN

SHIFT LEVERS

SRAM NX, 11-speed

REAR DERAILLEUR

SRAM NX, 11-speed

CASSETTE

SRAM PG-1130, 11-speed, 11-42t

CRANKSET

Race Face Ride

CHAINRINGS

Steel, 28T

BOTTOM BRACKET

Race Face, threaded BSA

CHAIN

KMC X11EPT, 11-speed, anti-corrosion coating w/ reusable Missing Link™

WHEELS & TIRES

RIMS

Stout XC 80, 26", alloy, 76mm internal width, disc-specific

FRONT HUB

Stout Pro 150, sealed cartridge bearings, 6-bolt disc, 15x150mm, 32h

REAR HUB

Stout Pro 197, sealed cartridge bearings, 6-bolt disc, 12x197mm, 32h

SPOKES

Stainless, 14g

FRONT TIRE

Ground Control Fat, Control casing, 120 TPI, Aramid folding bead, 26x4.6"

REAR TIRE

Ground Control Fat, Control casing, 120 TPI, Aramid folding bead, 26x4.6"

INNER TUBES

Presta, 40mm valve

ACCESSORIES

PEDALS

Specialized Dirt

* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.

Geometry

	S	M	L	XL
Crank Length	170MM	175MM	175MM	175MM
Handlebar Width	750MM	750MM	750MM	750MM
Stem Length	60MM	60MM	70MM	70MM
Saddle Width	143mm	143mm	143mm	143mm
Seatpost Length	350MM	350MM	400MM	400MM
Bike Standover Height, Actual	765mm	786mm	813mm	847mm
Stack	602mm	602mm	617mm	632mm
Reach	395mm	420mm	437mm	458mm
Head Tube Length	94mm	94mm	110mm	125mm
Head Tube Angle	71°	71°	71°	71°
BB Height	316mm	316mm	316mm	316mm
BB Drop	60mm	60mm	60mm	60mm
Trail	83mm	83mm	83mm	83mm
Fork Length, Full	496mm	496mm	496mm	496mm
Fork Rake/Offset	47mm	47mm	47mm	47mm
Front Center	640mm	665mm	687mm	713mm
Chainstay Length	455mm	455mm	455mm	455mm
Wheelbase	1088mm	1113mm	1135mm	1161mm
Top Tube Length, Horizontal	579mm	604mm	626mm	651mm
Seat Tube Length	394mm	434mm	470mm	520mm
Seat Tube Angle	73mm	73mm	73mm	73mm

Manual Downloads

2019 Rider/Bike Weight Limits and Terrain Conditions

Specialized Bicycle Owner's Manual (All Languages)

Dodatek - POUŽITÍ TRENAŽÉRU

Specialized Bicycle Owner's Manual Addendum: Riding With Kids

Specialized Bicycle Owner's Manual (English)

Trainer Usage Addendum to the Bicycle Owner's Manual

Rider Reviews

8 Reviews

10/02/2024

By far the most fun

This is the most smiles per mile bike I have ever owned. My kids call it the moon bike and love asking to go for rides.

Name:: Remington

Helpful?

02/16/2020

LOVE LOVE LOVE My Fat Boy!

Bought my Fat Boy in September 2019 after buying my first bike since I was a kid in May of 2019 (also a Specialized) as I wanted to ride in the winter/snow. I have rode this Fat Boy in mud, dirt, rocks, snow and through creeks and it just keeps going! I have not had one issue with the bike and it is tons of fun!! Just got done with a 26 mile Fat Bike race through single/double track, snow mobile trails and gravel roads. Bike performed wonderfully!! If you think you want a fat bike this is it!

Name:: Clint

Helpful?

03/24/2019

What a BLAST!

I just got a 2016 FatBoy off of FaceBook and WOW!!! I was expecting to have an easy time in North East winter conditions, but I never expected to have so much fun on a bike as I do this FatBoy.

Name:: Brdurbonesoff

Helpful?

01/21/2019

Versatile and fun!!!

I bought this bike when it was first released because it was one of the first fat bikes to handle and feel like a mt bike. Not only is it fun on typical singletrack, but it's a blast in the snow, sand, leaves, mud, ice (with studded tires)...the worse the conditions, the more fun this bike is!

Name:: Ec R.

Helpful?

12/24/2018

High Performance Fat Tire Bike

I bought my Fat Boy in 2014 and have had a ton of fun. I've ridden it many miles on many beaches along Monterey Bay CA and beyond including the giant dunes in Marina CA. I've gotten it wet in the ocean many times, sand on the chain, sand on the frame this bike keeps going, of course proper maintenance helps but this is a quality performance bike! With the carbon fork and 4.6 tires the bike corners like a Porsche in dirt! But the bikes performance really shines in the high steep sand dunes of Marina CA, it is here that it's maneuverability, climbing and descending make sand biking there so much fun! also, I've taken it to many festivals in the Bay Area, always get's people's attention and met good people because of it. Best fun on a bike for only $2K!

Name:: Dune D.

Helpful?

11/30/2018

Fun factor = 10!!!

I've been really happy overall with my Fatboy. I've ridden it in dry and wet singletrack, as well as beaches and snow, it goes great and the big tires are a blast! It's such a fun bike to ride!

Name:: T M.

Helpful?

11/15/2018

I would buy this bike again and again

In fact I did. My wife and I are the proud owners of Fatboys. Handles exceptional, ideal weight and quicker than I thought. If you remember that feeling you had when you got your first bike as a kid it's the same thing.

Name:: Rich B.

Helpful?

10/18/2018

I WOULD BUY THIS BIKE OVER AND OVER AGAIN

THIS BIKE IS AT HOME IN THE MUD OR ON A SINGLE TRACK TRAIL TEARING UP SOME DIRT DOWNHILL ALSO IT HANDLES GREAT AND IM A BIG GUY IT FITS VERY WELL

Name:: Steve O.

Helpful?