CyclingBicyclesMountainSpecialized 2020 Fatboy Base 650b Mountain Bike
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Free Professional, Quality Assembly
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Product Description

The security and control that the Fatboy provides is unparalleled. Those fat, 27.5x3.8 tires dramatically boost your traction, grip, and floatation over the trail. Specialized built the Fatboy with a durable list of components, like a SRAM 12-speed one-by drivetrain, that perform season after season. A very fat flavor of adventure! It boils down to a single word: adventure. The Fatboy’s massive tires (27.5x3.8”) float over rocks, roots, sand, snow, ice…. Let’s put it this way, if it’s part of mother earth, those big tires will roll right over it with a mix of comfort and traction that’s unrivaled. Get out there.

  • The Specialized Fatboy alloy frame is the lightest alloy fat bike frame available. This frame is even lighter than some carbon fat bike frames.
  • Lightweight carbon-fiber fork provides tons of compliance and absorbs chatter.
  • The SRAM SX Eagle 1X drivetrain is simple, yet gives you plenty of gearing to tackle any climb.
  • 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 SX Eagle one-by drivetrain keeps things simple, yet, with its massive 11x50 gear spread, gives you all the gearing to tackle the biggest climbs and all-day expeditions.
  • The Fatboy now rolls on 27.5-inch wheels and 27.5x3.8" Maxxis tires.
  • Premium, M5 alloy frame is light on the scales, yet holds up to any adventure

FrameSpecialized 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
ForkSpecialized FACT carbon, 46mm offset, tapered steerer, 150mm axle
ShiftersSRAM SX Eagle, trigger, 12-speed
Rear DerailleurSRAM SX Eagle
BrakesSRAM Level T, hydraulic disc, 200/180mm (front), SRAM Level T, hydraulic disc, 180/160mm (rear)
CranksSRAM X1 Alloy
CassetteSRAM PG-1210 Eagle, 11-50t
Bottom BracketSRAM DUB, BSA
ChainSRAM SX Eagle, 12-speed w/ PowerLock®
HubsStout Pro 150, sealed cartridge bearings, 6-bolt disc, 15x150mm, 32h (front), Stout Pro 197, sealed cartridge bearings, 6-bolt disc, 12x197mm, 32h (rear)
SpokesStainless, 14g
RimsStout XC 80, 27.5", alloy, 76mm internal width, disc-specific
TiresMaxxis Minion FBF, 120 TPI, EXO, 27.5 x 3.8" (front), Maxxis Minion FBR, 120 TPI, EXO, 27.5 x 3.8" (rear)
PedalsSpecialized Dirt
StemSpecialized, 3D-forged alloy, 4-bolt, 7-degree rise
HandlebarsStout Riser, double-butted alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 750mm / 780mm width, 31.8mm
GripsSpecialized Sip grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
SaddleSpecialized Bridge, size specific, 143/155
Seat PostSpecialized 2-bolt head, forged alloy, 8mm offset, micro-adjust, 30.9mm
Seat BinderAlloy, bolt-type, 34.9mm

*Specifications are subject to change without notice
Some Restrictions Apply - See Below

ERIK'S Low Price Guarantee

If you find a lower price on an identical bike or related product within 30 days of purchase, ERIK'S will refund you the difference! Click here for further details.

Free Professional, Quality Assembly

ERIK'S expert staff fully assembles your bicycle at no charge. We thoroughly check for proper adjustment, tighten and true wheels, and ensure your new bike is ready to ride.

Free Accessory Installation

ERIK'S has every accessory you need to make cycling more enjoyable. At the time of purchasing your new bike at ERIK'S, accessories will be installed free of charge.
*In-Store Only

Free 90-Day Safety Check

ERIK'S will perform a FREE safety check with adjustments within the first 90-days that you own your new bike.
*In-Store Only

Lifetime Extended Parts Warranty

ERIK'S Parts Warranty extends the manufacturer's warranty on any new bike purchased from ERIK'S. This covers any parts defect for as long as you own your new bicycle from ERIK'S For a full description, stop in at any ERIK'S Location.
*In-Store Only

Guaranteed Bike Trade-in Program

Get up to 50% of the purchased price in store credit when you trade-in select bikes purchased from ERIK'S! We also takes trade-ins of bikes not purchased at ERIK’S. Click here for full program details.
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Specialized 2020 Fatboy Base 650b Mountain Bike


Color: Oak-Green-Hyper-Spruce

Affirm is only available for online purchases. Please check our in-store financing options here.