2019 Berthoud Cycles JM-19 Base
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Steel
- Features
- Disc brake
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 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 | 650B/27.5 in 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 ScaleCategory Trend
All-road/GravelSource:http://www.gillesberthoud.fr/pret-a-rouler/index.php (+ Berthoud direct via Bike Insights)