2018 B'TWIN Ultra 520 AF GF ROAD BIKE - RIVAL DISC

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

Geometry

XS
S
M
L
XL
Stack
523mm
539mm
560mm
586mm
610mm
Reach
375mm
380mm
389mm
391mm
394mm
Stack to Reach Ratio
1.39:1
1.42:1
1.44:1
1.5:1
1.55:1
Seat Tube Length, Unknown
450mm
480mm
500mm
520mm
530mm
Top Tube Length, Effective/Horizontal HT Top
525mm
540mm
555mm
570mm
580mm
Top Tube Slope
10.3deg
8.7deg
8.6deg
9.3deg
10.6deg
Head Tube Angle
71.5deg
72deg
72.5deg
73deg
73deg
Seat Tube Angle
74deg
73.5deg
73.5deg
73deg
73deg
Head Tube Length
115mm
130mm
150mm
175mm
200mm
Bottom Bracket Height
Chainstay Length
415mm
415mm
415mm
415mm
415mm
Wheelbase
983mm
989mm
1000mm
1005mm
1015mm
Fork Offset/Rake
40mm
40mm
40mm
40mm
40mm
Trail
70.2mm
high
67.1mm
high
64mm
mid/​neutral
60.9mm
mid/​neutral
60.9mm
mid/​neutral
Mechanical Trail
66.6mm
63.8mm
61mm
58.2mm
58.2mm
Wheel Flop
21.1mm
19.7mm
18.4mm
17mm
17mm

520 AF GF ROAD BIKE - RIVAL DISC Build

XS
S
M
L
XL
Wheel Size
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
Tire Width
25mm
25mm
25mm
25mm
25mm
Tire Outer Diameter
672mm
672mm
672mm
672mm
672mm
Bike Length with Tires
1655mm
1661mm
1672mm
1677mm
1687mm
Crank Length
170mm
170mm
172.5mm
175mm
175mm
Handlebar Width
400mm
400mm
420mm
420mm
440mm
Stem Length
80mm
90mm
100mm
110mm
120mm
Stem Angle
7deg
7deg
7deg
7deg
7deg

Published Sizing Recommendations

Height
155 cm
to
166 cm
166 cm
to
173 cm
173 cm
to
182 cm
182 cm
to
186 cm
186 cm
to
200 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
Endurance Road
Source:https://www.decathlon.co.uk/ultra-520-af-gf-road-bike-rival-disc-id_8390785.html, Fork specs: https://www.bikeradar.com/reviews/bikes/road-bikes/btwin-ultra-520-af-gf-rival-disc-review/