2019 Berthoud Cycles JM-19 Base

	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

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.

Category Trend

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

Geometry