Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Specialized
2019 Specialized Fatboy 20
Value Guide market data · 2019 Specialized Fatboy 20
12-month trend
13%
Direction and magnitude, not judgment
vs. category average
10%
Holds value better than category avg
Price over time - 2019 Specialized Fatboy 20
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Fatboy model years
2019 Fatboy 20 lineup
Overview
About this bike
2019 Specialized Fatboy 20 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- FRAME
- Specialized A1 Premium Aluminum, fully-butted w/ smooth welds, ZeroStack head tube, 170mm rear hub spacing, replaceable alloy derailleur hanger
- FORK
- Specialized A1 Premium Aluminum, 1-1/8" alloy steerer
Drivetrain
- Groupset
- 2019 Specialized Fatboy 20
- SHIFT LEVERS
- SRAM X4, 9-speed, trigger
- REAR DERAILLEUR
- SRAM X4, long cage
- CASSETTE
- Sunrace, 9-speed, 11-36t
- CRANKSET
- Forged alloy, 32T, w/ chainguard
- CHAINRINGS
- Alloy, 28T
- BOTTOM BRACKET
- Square taper, sealed cartridge bearings, 100mm shell, 164mm axle
- CHAIN
- KMC X9, 9-speed w/ reusable MissingLink™
- Rear Cogs
- Sunrace, 9-speed: 11-34
- Shifters
- SRAM X4 trigger
Brakes
- FRONT BRAKE
- Tektro Aries, mechanical disc, organic pads, 160mm rotor
- REAR BRAKE
- Tektro Aries, mechanical disc, organic pads, 160mm rotor
- BRAKE LEVERS
- Tektro, Jr V-brake
- Brakes
- Tektro Aries, mechanical-disc
Cockpit
- HANDLEBARS
- Specialized, double-butted 6061 alloy, 9-degree backsweep, 4-degree upsweep, 31.8mm, 720mm width
- STEM
- Specialized, 3D-forged alloy, 4-bolt, 6-degree rise, 31.8mm clamp
- HEADSET
- 1-1/8", threadless, ZeroStack, semi-cartridge bearings
- GRIPS
- Specialized Body Geometry Women's XCT, lock-on
- SADDLE
- Specialized Youth, steel rails
- SEATPOST
- Alloy, single bolt, 27.2mm
- SEAT BINDER
- Alloy, single bolt, 31.8mm
- Handlebar
- Specialized, 6061 aluminum
Wheels & Tires
- RIMS
- 24" disc, alloy construction, 68mm internal width, 32h
- FRONT HUB
- Stout 135, loose ball bearings, 10x135 QR, 32h
- REAR HUB
- Specialized 170, Hi Hi disc, alloy, double-sealed loose ball bearings, QR, 32h
- SPOKES
- Stainless, 14g
- FRONT TIRE
- Ground Control Fat, 60 TPI, wire bead, 20x4.0"
- REAR TIRE
- Ground Control Fat, 60 TPI, wire bead, 20x4.0"
- INNER TUBES
- 20x4.0" tube, Presta valve
- Hubs
- Specialized MTB disc, aluminum
Pedals
- PEDALS
- Platform
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.