2012 Gravity Zilla Base 55.5
Build
700C/29 in × 1.75 in
Insights
Very aggressive stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 555.9mm |
| Reach | 409.5mm |
| Stack to Reach Ratio | 1.36:1 |
| Seat Tube Length, C-T | 555mm |
| Top Tube Length, Effective/Horizontal Center | 570.2mm |
| Top Tube Length, Actual C-C | 564.3mm |
| Top Tube Slope | 2.2deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 185mm |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 280.5mm |
| Chainstay Length | 445mm |
| Chainstay Length Horizontal | 438.6mm |
| Front-Center | 620.1mm |
| Front-Center Horizontal | 615.6mm |
| Wheelbase | 1054.2mm |
| Fork Length (Axle-To-Crown) | 430mm |
| Trail | — — |
| Tire to Pedal Spindle Distance With 170 mm cranks | 94.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 110.5mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 1.75in |
| Tire Outer Diameter | 710.9mm |
| Bike Length with Tires | 1765.1mm |
| Suspension Type | Rigid, suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Steel |
| Brake Type | Disc |
Source:https://www.bikesdirect.com/products/gravity/zilla_geometry.html