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
View all sizes

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