2019 Berthoud Cycles JM-19 Base

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

Geometry

51
53
55
57
59
Stack
540mm
550mm
569mm
588mm
606mm
Reach
363mm
380mm
389mm
393mm
402mm
Stack to Reach Ratio
1.49:1
1.45:1
1.46:1
1.5:1
1.51:1
Seat Tube Length, C-C
510mm
530mm
550mm
570mm
590mm
Top Tube Length, Effective/Horizontal Center
530mm
550mm
570mm
580mm
600mm
Head Tube Angle
70deg
70.5deg
70.5deg
70.5deg
70.5deg
Seat Tube Angle
73deg
73deg
72.5deg
72.5deg
72deg
Bottom Bracket Drop
67mm
67mm
67mm
67mm
67mm
Bottom Bracket Height
263mm
263mm
263mm
263mm
263mm
Chainstay Length
430mm
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
424.8mm
424.8mm
424.8mm
424.8mm
424.8mm
Front-Center
602.7mm
607.8mm
623.4mm
634.1mm
649.4mm
Front-Center Horizontal
599mm
604.1mm
619.8mm
630.5mm
645.9mm
Wheelbase
1023.8mm
1028.8mm
1044.6mm
1055.3mm
1070.7mm
Fork Offset/Rake
60mm
50mm
50mm
50mm
50mm
Trail
56.3mm
mid/​neutral
63.8mm
mid/​neutral
63.8mm
mid/​neutral
63.8mm
mid/​neutral
63.8mm
mid/​neutral
Mechanical Trail
52.9mm
60.2mm
60.2mm
60.2mm
60.2mm
Wheel Flop
18.1mm
20.1mm
20.1mm
20.1mm
20.1mm
Standover Height
781mm
796mm
814mm
833mm
851mm
Tire to Pedal Spindle
102.7mm
170 mm cranks
107.8mm
170 mm cranks
123.4mm
170 mm cranks
134.1mm
170 mm cranks
149.4mm
170 mm cranks
Pedal Spindle to Ground Clearance
93mm
170 mm cranks
93mm
170 mm cranks
93mm
170 mm cranks
93mm
170 mm cranks
93mm
170 mm cranks

Base Build

51
53
55
57
59
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
Tire Width
38mm
38mm
38mm
38mm
38mm
Tire Outer Diameter
660mm
660mm
660mm
660mm
660mm
Bike Length with Tires
1683.8mm
1688.8mm
1704.6mm
1715.3mm
1730.7mm
Crank Length
170mm
170mm
170mm
170mm
170mm
Handlebar Width
420mm
420mm
420mm
420mm
420mm
Stem Length
80mm
90mm
90mm
100mm
110mm

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:http://www.gillesberthoud.fr/pret-a-rouler/index.php (+ Berthoud direct via Bike Insights)