Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Specialized
2015 Specialized Fatboy Pro
Value Guide market data · 2015 Specialized Fatboy Pro
12-month trend
1%
Direction and magnitude, not judgment
vs. category average
9%
Holds value better than category avg
Price over time - 2015 Specialized Fatboy Pro
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Fatboy model years
2015 Fatboy Pro lineup
Overview
About this bike
2015 Specialized Fatboy Pro value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- RockShox Bluto RL, 100mm-travel, 15mm thru-axle
- Frame
- Specialized M4 butted aluminum
Drivetrain
- Groupset
- SRAM X01
- REAR DERAILLEUR
- SRAM X01, 11-speed, carbon cage
- SHIFT LEVERS
- SRAM X01,11-speed, trigger
- CASSETTE
- SRAM X1, 11-speed, 11-42
- CHAIN
- KMC X11L, 11-speed, reusable Missing Link
- CRANKSET
- Race Face Next SL, PF30 BB, 100mm spindle, 30T, spiderless
- Chainrings
- 30T
- Shifters
- SRAM X01
Brakes
- BRAKE LEVERS
- Shimano XT, hydraulic, w/ reach adjust
- FRONT BRAKE
- Shimano XT, hydraulic disc, Ice Tech resin pads w/ fins, Ice Tech rotor
- REAR BRAKE
- Shimano XT, hydraulic disc, Ice Tech resin pads w/ fins, Ice Tech rotor
- Brakes
- Shimano XT hydraulic disc, Ice Tech rotors
Cockpit
- HEADSET
- 1-1/8" upper, 1-1/2" lower, integrated Campy style, sealed cartridge bearings, split crown race, 3.8mm cone spacer
- STEM
- Specialized, 3D forged alloy, 4-bolt, 6-degree rise, anti-corrosion hardware
- HANDLEBARS
- Specialized, mini rise, 7050 alloy, 8-backsweep, 6-upsweep, 10mm rise, 31.8mm
- GRIPS
- Specialized Body Geometry XC Contour, Kraton w/ gel, lock-on, closed end
- SADDLE
- Body Geometry mountain, hollow Cr-Mo rails, 143mm
- SEAT BINDER
- Command Post, single bolt, 34.9mm
- Handlebar
- Specialized mini riser, aluminum
- Seatpost
- Command Post BlackLite, 125mm-travel (Small: 100mm)
Wheels & Tires
- RIMS
- Specialized Fatboy SL, alloy disc, single wall, 90mm wide, sleeve joint, hookless design, 32h
- FRONT HUB
- Specialized Hi Lo disc, sealed cartridge bearings, 15mm thru-axle, 150mm wide, 32h
- REAR HUB
- Specialized Hi Lo disc, alloy, sealed cartridge bearings, XD driver body, 190mm wide, QR, 32h
- SPOKES
- Stainless, 2.0/1.8/2.0mm
- FRONT TYRE
- Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6"
- REAR TYRE
- Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6"
- INNER TUBES
- Standard, presta valve
- Hubs
- Specialized MTB disc, aluminum
- Tires
- Specialized Ground Control, 26 x 4.6-inches
- Wheel Set
- Specialized Fatboy SL aluminum
Pedals
- PEDALS
- Specialized Bennies, 6061 alloy body, sealed cartridge, 4.5mm removable pins
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.