2019 Miracle Bike GR028/GR029 Base 52cm
Build
700C/29 in × 25 mm
Insights
Somewhat upright stack and reach vs trend of cyclocross bikes
Design deviates from other sizes of Miracle Bike GR028/GR029
Stack and Reach vs. Category Trend
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Geometry
| Stack | 540mm |
| Reach | 355mm |
| Stack to Reach Ratio | 1.52:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal Center | 515mm |
| Top Tube Slope | 7deg |
| Head Tube Angle | 70.5deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 65mm |
| Bottom Bracket Height | 271mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 420mm |
| Front-Center | 580mm |
| Front-Center Horizontal | 576mm |
| Wheelbase | 996mm |
| Fork Offset/Rake | 45mm |
| Fork Length, Unknown | 396mm |
| Trail | 71.3mm high |
| Mechanical Trail | 67.2mm |
| Wheel Flop | 22.4mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 74mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 101mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 25mm |
| Tire Outer Diameter | 672mm |
| Bike Length with Tires | 1668mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:http://miraclebikes.com/Product/detail/id/37.html