2023 Radon Bikes Spire Disc 8-10 51

Build

700C/29 in × 28 mm

Insights

Somewhat aggressive 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
520mm
Reach
377mm
Stack to Reach Ratio
1.38:1
Seat Tube Length, C-T
470mm
Top Tube Length, Effective/Horizontal HT Top
515mm
Top Tube Slope
7.5deg
Head Tube Angle
72deg
Seat Tube Angle
75.1deg
Head Tube Length
120mm
Bottom Bracket Drop
73mm
Bottom Bracket Height
266mm
Chainstay Length
408mm
Chainstay Length Horizontal
401.4mm
Front-Center
574.2mm
Front-Center Horizontal
569.6mm
Wheelbase
971mm
Fork Offset/Rake
45mm
Trail
62.8mm
mid/​neutral
Mechanical Trail
59.7mm
Wheel Flop
18.5mm
Standover Height
720.1mm
Tire to Pedal Spindle Distance
With 172.2 mm cranks
63mm
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
1649mm
Crank Length
172.2mm
Handlebar Width
400mm
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
166 cm
to
172 cm
Source:https://www.radon-bikes.de/it/roadbike/carbon/spire-disc-carbon/spire-disc-100-2023/