2020/OCR Classic Giant Bicycles OCR Alliance M
Build
700C/29 in × 25 mm
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of Giant Bicycles OCR
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 545.9mm |
| Reach | 388.1mm |
| Stack to Reach Ratio | 1.41:1 |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 145mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 266mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 419.2mm |
| Front-Center | 594.1mm |
| Front-Center Horizontal | 590mm |
| Wheelbase | 1009.2mm |
| Fork Offset/Rake | 45mm |
| Trail | 61.9mm mid/neutral |
| Mechanical Trail | 58.8mm |
| Wheel Flop | 18.2mm |
| Tire to Pedal Spindle Distance With 172.5 mm cranks | 85.6mm |
| Pedal Spindle to Ground Clearance With 172.5 mm cranks | 93.5mm |
Alliance Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 25mm |
| Tire Outer Diameter | 672mm |
| Bike Length with Tires | 1681.2mm |
| Crank Length | 172.5mm |
| Handlebar Width | 420mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Rim |
Published Sizing Recommendations
| Height | 175 cm to 181 cm |
Source:http://www.giantgd.com/bikes/showproduct.php?id=1501