2020/OCR Classic Giant Bicycles OCR Alliance S
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 | 525.6mm |
| Reach | 379.3mm |
| Stack to Reach Ratio | 1.39:1 |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 127mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 264mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 418.9mm |
| Front-Center | 592.7mm |
| Front-Center Horizontal | 588.3mm |
| Wheelbase | 1007.2mm |
| Fork Offset/Rake | 50mm |
| Trail | 62.8mm mid/neutral |
| Mechanical Trail | 59.4mm |
| Wheel Flop | 19.3mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 86.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 94mm |
Alliance Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 25mm |
| Tire Outer Diameter | 672mm |
| Bike Length with Tires | 1679.2mm |
| Crank Length | 170mm |
| Handlebar Width | 400mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Rim |
Published Sizing Recommendations
| Height | 170 cm to 177 cm |
Source:http://www.giantgd.com/bikes/showproduct.php?id=1501