Fatboy SL
Starting at $5,500.00
Part No.  

Fatboy SL

Starting at $5,500.00
Part No.  104100
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Fatboy SL
Overview
Technical Specifications
Geometry
Reviews
The smartest fat bike build you can buy. By combining our lightweight M4 alloy Fatboy frame with carbon where it really counts, we've delivered a bike that shaves considerable weight off the competition at a price that makes this accessible.
  • Fully butted M4 Premium Aluminum frame is lightweight and stiff
  • Specialized FACT carbon fork w/ 5-inch tire clearance for stiff handling
  • Specialized Ground Control 4.6-inch tires roll over anything
  • Race Face Next SL carbon crankset with SRAM XX1 1x11 components provides an incredibly light and efficient drivetrain
  • HED Big Deal Carbon rims for super light and stiff wheels that are tubeless compatible

Technical Specifications

FRAMESET
SEAT BINDER Alloy, 31.6mm
HEADSET 1-1/8"" upper, 1-1/2"" lower, Campy style, integrated sealed cartridge bearings
FRAME Specialized M4 Premium Aluminum, fully butted w/ smooth welds, tapered headtube, post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger
WHEELS
FRONT HUB Specialized Stout XC 135, Hi Lo disc, alloy, sealed cartridge bearings, QR, 32h
REAR HUB Specialized Stout XC 190, Hi Lo disc, alloy, sealed cartridge bearings, QR, 32h
INNER TUBES Standard, presta valve
SPOKES Stainless, butted, 2.0/1.8/2.0mm, black
FRONT TIRE Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6""
RIMS HED Big Deal, carbon, single wall, tubeless, 85mm wide, 32h
REAR TIRE Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6""
DRIVETRAIN
CHAIN KMC X11L, 11-speed, w/ reusable MissingLink
CRANKSET Race Face Next SL, PF30 BB, 100mm spindle, 30T, spiderless
CASSETTE SRAM XX1, 11-speed, 10-42
SHIFT LEVERS SRAM XX1, 11-speed, trigger
REAR DERAILLEUR SRAM XX1, 11-speed, carbon cage
COCKPIT
SADDLE Body Geometry Phenom Expert, hollow Ti rails, 143mm
SEATPOST S-Works FACT carbon, 20mm offset, 27.2mm
GRIPS Specialized Sip Grip, light lock-on, half-waffle, S/M: regular thickness, Others: XL
HANDLEBARS Specialized flat, carbon, 8-degree backsweep, 31.8mm
STEM Specialized Stout XC, 3D forged alloy, 4-bolt, 6-degree rise, anti-corriosion hardware
BRAKES
BRAKE LEVERS Magura MT8, carbon lever
FRONT BRAKE Magura MT8, hydraulic disc, Hi Friction pad, carbon master cylinder, alloy caliper, Storm SL rotor
REAR BRAKE Magura MT8, hydraulic disc, Hi Friction pad, carbon master cylinder, alloy caliper, Storm SL rotor
ACCESSORIES
PEDALS Alloy, 1 pc. body, 9/16"", w/ reflectors
SUSPENSION
FORK Specialized FACT carbon, full monocoque, tapered steerer, 135mm hub spacing, open QR dropouts

Geometry

Geometry Chart

Fatboy - Geometry

S M L XL
  S M L XL
Stem Length 60mm 60mm 70mm 70mm
Crank Length 170mm 175mm 175mm 175mm
Handle-Bar Width 750mm 750mm 750mm 750mm
Seat Tube Angle (Effective) 73° 73° 73° 73°
Reach 395mm 420mm 437mm 458mm
Stack 590mm 600mm 615mm 629mm
Chainstay Length 455mm 455mm 455mm 455mm
Bottom Bracket Drop 60mm 60mm 60mm 60mm
Head Tube Angle 70.5° 70.5° 70.5° 70.5°
Head Tube Length 110mm 120mm 135mm 150mm
Top Tube Length (Horizontal) 576mm 603mm 625mm 650mm
Seat Tube Length, Center to Top 394mm 445mm 483mm 533mm
Standover Height 757mm 793mm 820mm 849mm
Wheel Base 1083mm 1105mm 1128mm 1154mm
Seat Tube Angle (Actual) 73° 73° 73° 73°
Bottom Bracket Height 315mm 315mm 315mm 315mm
Seat-Post Length 100mm 400mm 400mm 400mm

Reviews