2023 Radon Bikes Spire Disc 8-10 54
Build
700C/29 in × 28 mm
Insights
Average stack and reach vs trend of endurance road bikes
Design deviates from other sizes of Radon Bikes Spire
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 540mm |
| Reach | 378mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal HT Top | 530mm |
| Top Tube Slope | 6.5deg |
| Head Tube Angle | 72.3deg |
| Seat Tube Angle | 74.25deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 73mm |
| Bottom Bracket Height | 266mm |
| Chainstay Length | 408mm |
| Chainstay Length Horizontal | 401.4mm |
| Front-Center | 579.2mm |
| Front-Center Horizontal | 574.6mm |
| Wheelbase | 976mm |
| Fork Offset/Rake | 45.3mm |
| Trail | 60.6mm mid/neutral |
| Mechanical Trail | 57.8mm |
| Wheel Flop | 17.6mm |
| Standover Height | 749.4mm |
| Tire to Pedal Spindle Distance With 172.2 mm cranks | 68mm |
| Pedal Spindle to Ground Clearance With 172.2 mm cranks | 93.8mm |
Disc 8-10 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1654mm |
| Crank Length | 172.2mm |
| Handlebar Width | 420mm |
| Stem Length | 100mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 172 cm to 178 cm |
Source:https://www.radon-bikes.de/it/roadbike/carbon/spire-disc-carbon/spire-disc-100-2023/