2020 VAAST Bikes A/1 650b

Design
Drop Bar, Rigid, non-suspension corrected
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

Small
Medium
Large
X-Large
Stack
536mm
563mm
595mm
620mm
Reach
365mm
380mm
395mm
410mm
Stack to Reach Ratio
1.47:1
1.48:1
1.51:1
1.51:1
Seat Tube Length, Unknown
520mm
540mm
560mm
580mm
Top Tube Length, Effective/Horizontal HT Top
534mm
557mm
583mm
605mm
Top Tube Slope
4.4deg
5.1deg
6.2deg
6.5deg
Head Tube Angle
70deg
71deg
72deg
72deg
Seat Tube Angle
72.5deg
72.5deg
72.5deg
72.5deg
Head Tube Length
115mm
140mm
170mm
195mm
Bottom Bracket Drop
68mm
68mm
68mm
68mm
Bottom Bracket Height
271mm
271mm
271mm
271mm
Chainstay Length
425mm
425mm
425mm
425mm
Chainstay Length Horizontal
419.5mm
419.5mm
419.5mm
419.5mm
Front-Center
592mm
607mm
623mm
645mm
Front-Center Horizontal
588.5mm
603.5mm
618.5mm
641.5mm
Wheelbase
1008mm
1023mm
1038mm
1061mm
Fork Offset/Rake
50mm
50mm
50mm
50mm
Trail
70.2mm
high
63.9mm
mid/​neutral
57.6mm
mid/​neutral
57.6mm
mid/​neutral
Mechanical Trail
65.9mm
60.4mm
54.8mm
54.8mm
Wheel Flop
22.6mm
19.7mm
16.9mm
16.9mm
Standover Height
774mm
797mm
821mm
841mm
Tire to Pedal Spindle
83mm
170 mm cranks
95.5mm
172.5 mm cranks
111.5mm
172.5 mm cranks
131mm
175 mm cranks
Pedal Spindle to Ground Clearance
101mm
170 mm cranks
98.5mm
172.5 mm cranks
98.5mm
172.5 mm cranks
96mm
175 mm cranks

650b Build

Small
Medium
Large
X-Large
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
Tire Width
47mm
47mm
47mm
47mm
Tire Outer Diameter
678mm
678mm
678mm
678mm
Bike Length with Tires
1686mm
1701mm
1716mm
1739mm
Crank Length
170mm
172.5mm
172.5mm
175mm
Handlebar Width
400mm
420mm
420mm
440mm
Stem Length
90mm
90mm
90mm
90mm

Published Sizing Recommendations

Height
5 ft 3 in
to
5 ft 6 in
5 ft 7 in
to
6 ft 0 in
6 ft 0 in
to
6 ft 4 in
6 ft 4 in
to
6 ft 8 in

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
All-road/Gravel
Source:https://www.vaastbikes.com/bikemodels/a1/