2021 Specialized Bicycles Hotrock Base 20
Build
20 in (406) × 2.1 in
Insights
Design deviates from other sizes of Specialized Bicycles Hotrock
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 448mm |
| Reach | 320mm |
| Stack to Reach Ratio | 1.4:1 |
| Seat Tube Length, Unknown | 279mm |
| Top Tube Length, Effective/Horizontal Center | 465mm |
| Top Tube Slope | 24.2deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 72deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 20mm |
| Bottom Bracket Height | 236.3mm |
| Chainstay Length | 390mm |
| Chainstay Length Horizontal | 389.5mm |
| Front-Center | 527mm |
| Front-Center Horizontal | 526.5mm |
| Wheelbase | 916mm |
| Fork Offset/Rake | 40mm |
| Fork Length (Axle-To-Crown) | 352mm |
| Trail | 55.6mm mid/neutral |
| Mechanical Trail | 51.9mm |
| Wheel Flop | 18.6mm |
| Standover Height | 468mm |
| Tire to Pedal Spindle Distance With 127 mm cranks | 143.7mm |
| Pedal Spindle to Ground Clearance With 127 mm cranks | 109.3mm |
Base Build
| Wheel Size | 20 inch (406 BSD, BMX/Kids) (406mm BSD) |
| Tire Width | 2.1in |
| Tire Outer Diameter | 512.7mm |
| Bike Length with Tires | 1428.7mm |
| Crank Length | 127mm |
| Handlebar Width | 580mm |
| Stem Length | 70mm |
| Stem Angle | 20deg |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | NaNmm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Rim |
Source:https://www.specialized.com/us/en/hotrock-20/p/184498