2020 AURUM Magma Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Carbon/Composite
Fork
Carbon/Composite
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

50
52
54
56
58
61
Stack
505mm
525mm
545mm
567mm
589mm
615mm
Reach
370mm
376mm
384mm
392mm
400mm
408mm
Stack to Reach Ratio
1.36:1
1.4:1
1.42:1
1.45:1
1.47:1
1.51:1
Seat Tube Length, C-T
453mm
480mm
504mm
526mm
547mm
573mm
Top Tube Length, Effective/Horizontal Unknown
515mm
536mm
551mm
565mm
580mm
596mm
Top Tube Slope
8deg
7.3deg
6.8deg
6.7deg
6.7deg
6.6deg
Head Tube Angle
71.8deg
71.6deg
73deg
73deg
73deg
73deg
Seat Tube Angle
74deg
73deg
73deg
73deg
73deg
73deg
Bottom Bracket Drop
74mm
71mm
71mm
71mm
71mm
71mm
Bottom Bracket Height
265mm
268mm
268mm
268mm
268mm
268mm
Chainstay Length
407mm
407mm
410mm
410mm
410mm
410mm
Chainstay Length Horizontal
400.2mm
400.8mm
403.8mm
403.8mm
403.8mm
403.8mm
Front-Center
570mm
584mm
580mm
594mm
608mm
624mm
Front-Center Horizontal
564.8mm
579.2mm
575.2mm
589.2mm
604.2mm
620.2mm
Wheelbase
965mm
980mm
979mm
993mm
1008mm
1024mm
Fork Offset/Rake
50mm
50mm
44mm
44mm
44mm
44mm
Trail
58.8mm
mid/​neutral
60.1mm
mid/​neutral
57.6mm
mid/​neutral
57.6mm
mid/​neutral
57.6mm
mid/​neutral
57.6mm
mid/​neutral
Mechanical Trail
55.9mm
57mm
55.1mm
55.1mm
55.1mm
55.1mm
Wheel Flop
17.5mm
18mm
16.1mm
16.1mm
16.1mm
16.1mm
Standover Height
728mm
750mm
782mm
803mm
826mm
850mm
Tire to Pedal Spindle
61mm
170 mm cranks
75mm
170 mm cranks
71mm
170 mm cranks
85mm
170 mm cranks
99mm
170 mm cranks
115mm
170 mm cranks
Pedal Spindle to Ground Clearance
95mm
170 mm cranks
98mm
170 mm cranks
98mm
170 mm cranks
98mm
170 mm cranks
98mm
170 mm cranks
98mm
170 mm cranks

Base Build

50
52
54
56
58
61
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 Width Max
30mm
30mm
30mm
30mm
30mm
30mm
Tire Outer Diameter
678mm
678mm
678mm
678mm
678mm
678mm
Bike Length with Tires
1643mm
1658mm
1657mm
1671mm
1686mm
1702mm

Published Sizing Recommendations

Height
152 cm
to
163 cm
161 cm
to
170 cm
170 cm
to
177 cm
175 cm
to
181 cm
180 cm
to
188 cm
186 cm
to
195 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 Scale
Category Trend
Performance Road
Source:https://aurumbikes.com/the-bike/#geometry-chart