2023 Radon Bikes Spire Disc 8-10
- Category
- Endurance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
48 | 51 | 54 | 57 | 60 | 63 | |
Stack | 503mm | 520mm | 540mm | 559mm | 579mm | 597mm |
Reach | 376mm | 377mm | 378mm | 382mm | 391mm | 400mm |
Stack to Reach Ratio | 1.34:1 | 1.38:1 | 1.43:1 | 1.46:1 | 1.48:1 | 1.49:1 |
Seat Tube Length, C-T | 440mm | 470mm | 500mm | 530mm | 560mm | 590mm |
Top Tube Length, Effective/Horizontal HT Top | 505mm | 515mm | 530mm | 545mm | 565mm | 585mm |
Top Tube Slope | 9deg | 7.5deg | 6.5deg | 5.4deg | 4.4deg | 3.3deg |
Head Tube Angle | 72deg | 72deg | 72.3deg | 72.8deg | 73deg | 73.3deg |
Seat Tube Angle | 75.6deg | 75.1deg | 74.25deg | 73.8deg | 73.3deg | 72.8deg |
Head Tube Length | 100mm | 120mm | 140mm | 160mm | 180mm | 200mm |
Bottom Bracket Drop | 75mm | 73mm | 73mm | 71mm | 71mm | 69mm |
Bottom Bracket Height | 264mm | 266mm | 266mm | 268mm | 268mm | 270mm |
Chainstay Length | 408mm | 408mm | 408mm | 408mm | 408mm | 408mm |
Chainstay Length Horizontal | 401.1mm | 401.4mm | 401.4mm | 401.8mm | 401.8mm | 402.1mm |
Front-Center | 566.9mm | 574.2mm | 579.2mm | 585.6mm | 597.5mm | 609.8mm |
Front-Center Horizontal | 562mm | 569.6mm | 574.6mm | 581.2mm | 593.2mm | 605.9mm |
Wheelbase | 963mm | 971mm | 976mm | 983mm | 995mm | 1008mm |
Fork Offset/Rake | 44.6mm | 45mm | 45.3mm | 46mm | 44.9mm | 45.5mm |
Trail | 63.3mm mid/neutral | 62.8mm mid/neutral | 60.6mm mid/neutral | 56.8mm mid/neutral | 56.7mm mid/neutral | 54.2mm mid/neutral |
Mechanical Trail | 60.2mm | 59.7mm | 57.8mm | 54.2mm | 54.3mm | 52mm |
Wheel Flop | 18.6mm | 18.5mm | 17.6mm | 16mm | 15.9mm | 14.9mm |
Standover Height | 703.2mm | 720.1mm | 749.4mm | 773mm | 796.8mm | 823.5mm |
Tire to Pedal Spindle | 57.9mm 170 mm cranks | 63mm 172.2 mm cranks | 68mm 172.2 mm cranks | 74.4mm 172.2 mm cranks | 83.5mm 175 mm cranks | 95.8mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 94mm 170 mm cranks | 93.8mm 172.2 mm cranks | 93.8mm 172.2 mm cranks | 95.8mm 172.2 mm cranks | 93mm 175 mm cranks | 95mm 175 mm cranks |
Disc 8-10 Build
48 | 51 | 54 | 57 | 60 | 63 | |
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 | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm |
Tire Outer Diameter | 678mm | 678mm | 678mm | 678mm | 678mm | 678mm |
Bike Length with Tires | 1641mm | 1649mm | 1654mm | 1661mm | 1673mm | 1686mm |
Crank Length | 170mm | 172.2mm | 172.2mm | 172.2mm | 175mm | 175mm |
Handlebar Width | 400mm | 400mm | 420mm | 420mm | 440mm | 460mm |
Stem Length | 90mm | 100mm | 100mm | 100mm | 110mm | 120mm |
Published Sizing Recommendations
Height | 158 cm to 166 cm | 166 cm to 172 cm | 172 cm to 178 cm | 178 cm to 184 cm | 184 cm to 190 cm | 190 cm to 196 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/it/roadbike/carbon/spire-disc-carbon/spire-disc-100-2023/