2015
2015 Specialized Fatboy Expert
The 2015 Specialized Fatboy Expert sits more aggressive than most fat bikes, with a steeper head angle and a longer rear center. Reach 395 to 458 mm, stack 590 to 629 mm. The Fatboy Expert build comes with SRAM X-7 shifting and Specialized Ground Control Fat tires.
Source: specialized.com. Checked .
Key facts
- Brand
- Specialized
- Model
- Fatboy
- Model year
- 2015
- Frame
- Expert
- Type
- Fat
- Geometry labels
- S, M, L, and XL
- Drivetrain
- SRAM X-7
- Geometry
- Complete for every size
- Source
- specialized.com
- Checked
Geometry by size
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Reach(mm) | 395 | 420 | 437 | 458 |
| Stack(mm) | 590 | 600 | 615 | 629 |
| Head tube angle(°) | 70.5 | 70.5 | 70.5 | 70.5 |
| Seat tube angle(°) | 73 | 73 | 73 | 73 |
| Effective top tube(mm) | 576 | 603 | 625 | 650 |
| Chainstay length(mm) | 455 | 455 | 455 | 455 |
| Wheelbase(mm) | 1083 | 1105 | 1128 | 1154 |
| BB drop(mm) | 60 | 60 | 60 | 60 |
| BB height(mm) | 315 | 315 | 315 | 315 |
| Standover(mm) | 757 | 793 | 820 | 849 |
| Seat tube length(mm) | 394 | 445 | 483 | 533 |
| Head tube length(mm) | 110 | 120 | 135 | 150 |
Stock build
11 parts
Drivetrain
Wheels & Tires
Brakes
Shimano Deore M506
Keep your Fatboy Expert in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
MManufacturer
Quick answers
- Which size or configuration labels have geometry for the 2015 Specialized Fatboy Expert?
- Geometry is listed for S, M, L, and XL.
- What are the reach and stack of the 2015 Specialized Fatboy Expert in size L?
- In size L, reach is 437 mm and stack is 615 mm.
- What is the head tube angle of the 2015 Specialized Fatboy Expert?
- The head tube angle is 70.5 degrees in every size.
- What does the 2015 Specialized Fatboy Expert ship with?
- The stock build includes SRAM Grip Shift, Specialized Ground Control Fat, and Shimano Deore M506.
- Which years of the Specialized Fatboy are on Quiver?
- Quiver has the Specialized Fatboy for 2015, 2020, 2019, 2018, and 2017.
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
