2020 Gunnar Cycles USA Sport Disc Base 480
Build
650B/27.5 in × 32 mm
Insights
Average stack and reach vs trend of endurance road bikes
Design deviates from other sizes of Gunnar Cycles USA Sport Disc
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 520mm |
| Reach | 363mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, C-T | 440mm |
| Top Tube Length, Effective/Horizontal Center | 500mm |
| Top Tube Length, Actual C-C | 484.6mm |
| Top Tube Slope | 11.9deg |
| Head Tube Angle | 71.5deg |
| Seat Tube Angle | 75.5deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 63mm |
| Bottom Bracket Height | 261mm |
| Chainstay Length | 420mm |
| Chainstay Length Horizontal | 415.3mm |
| Front-Center | 567mm |
| Front-Center Horizontal | 562.8mm |
| Wheelbase | 978mm |
| Fork Offset/Rake | 45mm |
| Fork Length, Unknown | 383mm |
| Trail | 61mm mid/neutral |
| Mechanical Trail | 57.8mm |
| Wheel Flop | 18.3mm |
| Standover Height | 713mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 73mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 91mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 32mm |
| Tire Outer Diameter | 648mm |
| Bike Length with Tires | 1626mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | N/A |
| Brake Type | Disc |
Source:http://gunnarbikes.com/site/sport-disc/