Velopedia Bicycle Archive
2015 Specialized Fatboy SE
Original specifications: SRAM X5 · 10-speed · mechanical rear derailleur · 26 wheels.
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At a glance
- Model year
- 2015
- Category
- Mountain
- Original MSRP
- $1,500.00
- Sizes
- S, M, L, XL
- Colors
- Satin Warm Charcoal/Black, Satin Deep Blue/Cyan/Dirty White
- In this record
- 24 specifications · 2 archived images · original MSRP
- Archive ID
- 1510569
Original buildAluminum · Mountian mix · 26
Frameset
| Frame Construction | Specialized M4 Premium Aluminum, fully butted w/ smooth welds, tapered headtube, post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger |
|---|---|
| Frame Material | Aluminum |
| Fork | Specialized alloy, air-formed legs, tapered alloy steerer, 135mm hub spacing, QR dropouts |
| Fork Material | Aluminum |
Drivetrain
| Component Group | Mountian mix |
|---|---|
| Shifters | SRAM X5, 2x10, trigger |
| Front Derailleur | SRAM X5, 2x10, low direct mount |
| Rear Derailleur | SRAM X5, 10-speed, long cage |
| Crankset | Custom Samox, 2x10, alloy, 100mm CNC spindle, 36/22, 104/64mm BCD spider |
| Bottom Bracket | Samox, PF30 |
| Rear Cogs | Sunrace, 10-speed, 11-36 |
| Chain | KMC X10, 10-speed, reusable Missing Link |
| Pedals | Resin test ride, w/ toe clips, CEN std. |
Brakes
| Brakes | Tektro Aries, mechanical disc, organic pads |
|---|
Cockpit & Contact Points
| Headset | 1-1/8" upper, 1-1/2" lower, Campy style, integrated sealed cartridge bearings |
|---|---|
| Handlebar | Specialized, low rise, double butted 6061 alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 31.8mm |
| Stem | Specialized 3D forged alloy, 4-bolt, 6-degree rise, anti-corrosion hardware |
| Saddle | Body Geometry mountain, hollow Cr-Mo rails, 143mm |
| Seatpost | Alloy, 2-bolt, micro-adjust, 12.5mm offset, 27.2mm, anti-corrosion hardware |
Wheels & Tires
| Hubs | Specialized MTB Hi Lo disc, alloy, double-sealed loose ball, QR, 32h, Specialized MTB Hi Lo disc, alloy, double-sealed loose ball, QR, 32h |
|---|---|
| Rims | Specialized Fatboy SL, alloy disc, single wall, 90mm wide, sleeve joint, hookless design, 32h |
| Spokes | Stainless, 14g |
| Front Tire | Specialized Ground Control Fat, 60TPI, wire bead, 26x4.6", Specialized Ground Control Fat, 60TPI, wire bead, 26x4.6" |
| Wheel Size | 26 |
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
Find replacement parts

45NRTH Dillinger 5 Studded Fatbike Tubeless Tire - 26in Tanwall, 60tpi, 26x4.6
26x4.6
Replacement option · verify fit
More parts (6)
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2015 Specialized Fatboy SE · Fat Bike · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Specialized M4 Premium Aluminum, fully butted w/ smooth welds, tapered headtube, post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger · Fork: Specialized alloy, air-formed legs, tapered alloy steerer, 135mm hub spacing, QR dropouts · Aluminum
Drivetrain
Check drivetrain wear →Archived: Group: Mountian mix · Shifters: SRAM X5, 2x10, trigger · Front derailleur: SRAM X5, 2x10, low direct mount · Rear derailleur: SRAM X5, 10-speed, long cage · Crankset: Custom Samox, 2x10, alloy, 100mm CNC spindle, 36/22, 104/64mm BCD spider · Bottom bracket: Samox, PF30 · Rear cogs: Sunrace, 10-speed, 11-36 · Chain: KMC X10, 10-speed, reusable Missing Link
Brakes
Inspect the brakes →Archived: Brakes: Tektro Aries, mechanical disc, organic pads
Wheels and tires
Check wheels and tires →Archived: Wheel size: 26 · Rims: Specialized Fatboy SL, alloy disc, single wall, 90mm wide, sleeve joint, hookless design, 32h · Hubs: Specialized MTB Hi Lo disc, alloy, double-sealed loose ball, QR, 32h, Specialized MTB Hi Lo disc, alloy, double-sealed loose ball, QR, 32h · Front tire: Specialized Ground Control Fat, 60TPI, wire bead, 26x4.6", Specialized Ground Control Fat, 60TPI, wire bead, 26x4.6"
Controls and contact points
Archived: Headset: 1-1/8" upper, 1-1/2" lower, Campy style, integrated sealed cartridge bearings · Handlebar: Specialized, low rise, double butted 6061 alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 31.8mm · Stem: Specialized 3D forged alloy, 4-bolt, 6-degree rise, anti-corrosion hardware · Seatpost: Alloy, 2-bolt, micro-adjust, 12.5mm offset, 27.2mm, anti-corrosion hardware · Saddle: Body Geometry mountain, hollow Cr-Mo rails, 143mm · Pedals: Resin test ride, w/ toe clips, CEN std.
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this bike?Help document firsthand fit, ride and maintenance details that may no longer be available.
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Gallery2 images
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.