2018 Specialized Bicycles Fatboy 20 Base 20.0
Build
20 in (406) × 4 in
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 464mm |
| Reach | 319mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, C-T | 280mm |
| Top Tube Length, Effective/Horizontal HT Top | 470mm |
| Top Tube Slope | 26deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 72deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 25mm |
| Bottom Bracket Height | 279.6mm |
| Chainstay Length | 390mm |
| Chainstay Length Horizontal | 389.2mm |
| Front-Center | 526mm |
| Front-Center Horizontal | 524.8mm |
| Wheelbase | 914mm |
| Fork Offset/Rake | 35mm |
| Fork Length (On-Axis) | 360mm |
| Trail | 79.4mm high |
| Mechanical Trail | 74.2mm |
| Wheel Flop | 26.6mm |
| Standover Height | 583mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 51.4mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 109.6mm |
Base Build
| Wheel Size | 20 inch (406 BSD, BMX/Kids) (406mm BSD) |
| Tire Width | 4in |
| Tire Outer Diameter | 609.2mm |
| Bike Length with Tires | 1523.2mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Flat Bar |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/fatboy-20/p/133899