2020 Radon Bikes Spire Disc Carbon
- Category
- Endurance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
54 | 54 | 54 | 57 | |
Stack | 540mm | 540mm | 540mm | 559mm |
Reach | 378mm | 378mm | 378mm | 382mm |
Stack to Reach Ratio | 1.43:1 | 1.43:1 | 1.43:1 | 1.46:1 |
Seat Tube Length, Unknown | 500mm | 500mm | 500mm | 530mm |
Top Tube Length, Effective/Horizontal Unknown | 530mm | 530mm | 530mm | 545mm |
Top Tube Slope | 6.5deg | 6.5deg | 6.5deg | 5.4deg |
Head Tube Angle | 72.3deg | 72.3deg | 72.3deg | 72.8deg |
Seat Tube Angle | 74.25deg | 74.25deg | 74.25deg | 73.8deg |
Head Tube Length | 140mm | 140mm | 140mm | 160mm |
Bottom Bracket Drop | 73mm | 73mm | 73mm | 71mm |
Bottom Bracket Height | 266mm | 266mm | 266mm | 268mm |
Chainstay Length | 408mm | 408mm | 408mm | 408mm |
Chainstay Length Horizontal | 401.4mm | 401.4mm | 401.4mm | 401.8mm |
Front-Center | 579.2mm | 579.2mm | 579.2mm | 585.6mm |
Front-Center Horizontal | 574.6mm | 574.6mm | 574.6mm | 581.2mm |
Wheelbase | 976mm | 976mm | 976mm | 983mm |
Fork Offset/Rake | 45.3mm | 45.3mm | 45.3mm | 46mm |
Trail | 60.6mm mid/neutral | 60.6mm mid/neutral | 60.6mm mid/neutral | 56.8mm mid/neutral |
Mechanical Trail | 57.8mm | 57.8mm | 57.8mm | 54.2mm |
Wheel Flop | 17.6mm | 17.6mm | 17.6mm | 16mm |
Standover Height | 749.4mm | 749.4mm | 749.4mm | 773mm |
Tire to Pedal Spindle | 70.2mm 170 mm cranks | 70.2mm 170 mm cranks | 70.2mm 170 mm cranks | 76.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 96mm 170 mm cranks | 96mm 170 mm cranks | 96mm 170 mm cranks | 98mm 170 mm cranks |
Disc Carbon Build
54 | 54 | 54 | 57 | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 28mm | 28mm | 28mm |
Tire Outer Diameter | 678mm | 678mm | 678mm | 678mm |
Bike Length with Tires | 1654mm | 1654mm | 1654mm | 1661mm |
Published Sizing Recommendations
Height | 172 cm to 178 cm | 172 cm to 178 cm | 172 cm to 178 cm | 178 cm to 184 cm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Endurance RoadSource:https://www.radon-bikes.de/fr/roadbike/carbon/spire-disc-carbon/spire-disc-80-2020/