2021 Jamis Bicycles Allegro A1

	15"	17"	19"	21"	23"
Stack	546mm	570mm	591mm	614mm	638mm
Reach	386mm	391mm	396mm	401mm	406mm
Stack to Reach Ratio	1.41:1	1.46:1	1.49:1	1.53:1	1.57:1
Seat Tube Length, Unknown	381mm	431.8mm	482.6mm	533.4mm	584.2mm
Top Tube Length, Effective/Horizontal Center	554mm	566mm	577mm	589mm	601mm
Top Tube Slope	20.1deg	16.9deg	13.6deg	10.6deg	7.8deg
Head Tube Angle	72deg	72deg	72deg	73deg	73deg
Seat Tube Angle	73deg	73deg	73deg	73deg	73deg
Head Tube Length	120mm	145mm	170mm	190mm	215mm
Bottom Bracket Drop	57.5mm	57.5mm	55mm	55mm	55mm
Bottom Bracket Height	288.5mm	288.5mm	291mm	291mm	291mm
Chainstay Length	435mm	435mm	435mm	440mm	440mm
Chainstay Length Horizontal	431.2mm	431.2mm	431.5mm	436.6mm	436.6mm
Front-Center	598.6mm	610.5mm	622.9mm	624.9mm	636.8mm
Front-Center Horizontal	595.8mm	607.8mm	620.5mm	622.5mm	634.5mm
Wheelbase	1027mm	1039mm	1052mm	1059mm	1071mm
Fork Offset/Rake	48mm	48mm	48mm	48mm	48mm
Trail	62mm mid/neutral	62mm mid/neutral	62mm mid/neutral	55.6mm mid/neutral	55.6mm mid/neutral
Mechanical Trail	58.9mm	58.9mm	58.9mm	53.2mm	53.2mm
Wheel Flop	18.2mm	18.2mm	18.2mm	15.5mm	15.5mm
Standover Height	734mm	766mm	804mm	839mm	872mm
Tire to Pedal Spindle	82.6mm 170 mm cranks	94.5mm 170 mm cranks	106.9mm 170 mm cranks	103.9mm 175 mm cranks	115.8mm 175 mm cranks
Pedal Spindle to Ground Clearance	118.5mm 170 mm cranks	118.5mm 170 mm cranks	121mm 170 mm cranks	116mm 175 mm cranks	116mm 175 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:https://www.jamisbikes.com/bikes/urban-fitness/urban-fitness/allegro/

Geometry