2019 Mason Cycles Bokeh 105 Hydro 650b

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

Geometry

50CM
52CM
54CM
56CM
58CM
60CM
62CM
Stack
537.9mm
554mm
568.1mm
579.5mm
587.9mm
607mm
630.7mm
Reach
363.5mm
374mm
376.2mm
383.4mm
395.2mm
399.1mm
401.4mm
Stack to Reach Ratio
1.48:1
1.48:1
1.51:1
1.51:1
1.49:1
1.52:1
1.57:1
Seat Tube Length, C-T
500mm
520mm
540mm
560mm
580mm
600mm
620mm
Seat Tube Length, C-C
453mm
473mm
493.5mm
513.7mm
534.1mm
554.2mm
574.7mm
Top Tube Length, Effective/Horizontal Center
519.9mm
535.9mm
551mm
561.4mm
580.8mm
590.7mm
600.5mm
Top Tube Length, Actual C-C
503.9mm
520.3mm
534.4mm
546.3mm
567.2mm
577.1mm
585.8mm
Top Tube Slope
8.7deg
7.9deg
7.4deg
6.3deg
5.1deg
5deg
5.4deg
Head Tube Angle
70deg
70.5deg
71deg
71.5deg
72deg
72deg
72deg
Seat Tube Angle
74deg
74deg
73deg
73deg
72.5deg
72.5deg
72.5deg
Head Tube Length
115mm
130mm
145mm
155mm
165mm
185mm
210mm
Bottom Bracket Drop
75mm
75mm
73mm
73mm
70mm
70mm
70mm
Bottom Bracket Height
267mm
267mm
269mm
269mm
272mm
272mm
272mm
Chainstay Length
435mm
435mm
435mm
435mm
435mm
435mm
435mm
Chainstay Length Horizontal
428.5mm
428.5mm
428.8mm
428.8mm
429.3mm
429.3mm
429.3mm
Front-Center
590mm
602mm
604mm
610mm
620mm
630mm
640mm
Front-Center Horizontal
585.2mm
593.3mm
599.6mm
605.6mm
616.1mm
626.1mm
636.2mm
Wheelbase
1013.7mm
1021.8mm
1028.4mm
1034.4mm
1045.4mm
1055.4mm
1065.5mm
Fork Offset/Rake
50mm
50mm
50mm
50mm
50mm
50mm
50mm
Fork Length (On-Axis)
398mm
398mm
398mm
398mm
398mm
398mm
398mm
Trail
71.3mm
high
68.1mm
high
64.9mm
mid/​neutral
61.7mm
mid/​neutral
58.6mm
mid/​neutral
58.6mm
mid/​neutral
58.6mm
mid/​neutral
Mechanical Trail
67mm
64.2mm
61.3mm
58.5mm
55.7mm
55.7mm
55.7mm
Wheel Flop
22.9mm
21.4mm
20mm
18.6mm
17.2mm
17.2mm
17.2mm
Standover Height
764.1mm
781.8mm
799.4mm
814.8mm
831mm
850mm
871.7mm
Tire to Pedal Spindle
78mm
170 mm cranks
90mm
170 mm cranks
89.5mm
172.5 mm cranks
95.5mm
172.5 mm cranks
103mm
175 mm cranks
113mm
175 mm cranks
123mm
175 mm cranks
Pedal Spindle to Ground Clearance
97mm
170 mm cranks
97mm
170 mm cranks
96.5mm
172.5 mm cranks
96.5mm
172.5 mm cranks
97mm
175 mm cranks
97mm
175 mm cranks
97mm
175 mm cranks

105 Hydro 650b Build

50CM
52CM
54CM
56CM
58CM
60CM
62CM
Wheel Size
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
Tire Width
50mm
50mm
50mm
50mm
50mm
50mm
50mm
Tire Outer Diameter
684mm
684mm
684mm
684mm
684mm
684mm
684mm
Bike Length with Tires
1697.7mm
1705.8mm
1712.4mm
1718.4mm
1729.4mm
1739.4mm
1749.5mm
Crank Length
170mm
170mm
172.5mm
172.5mm
175mm
175mm
175mm
Handlebar Width
420mm
420mm
440mm
440mm
460mm
460mm
460mm
Stem Length
90mm
90mm
100mm
110mm
110mm
120mm
120mm

Published Sizing Recommendations

Height
157 cm
to
168 cm
163 cm
to
172 cm
170 cm
to
180 cm
175 cm
to
185 cm
180 cm
to
188 cm
185 cm
to
193 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
All-road/Gravel
Source:https://masoncycles.cc/products/bokeh-105-hydro