2022 BASIC Bikes Basic #1 Gravel

	49	52	54	56	58
Stack	540mm	554mm	570mm	582mm	596mm
Reach	355mm	366mm	381mm	392mm	402mm
Stack to Reach Ratio	1.52:1	1.51:1	1.5:1	1.48:1	1.48:1
Seat Tube Length, C-T	500mm	520mm	540mm	560mm	580mm
Top Tube Length, Effective/Horizontal Center	515mm	535mm	555.5mm	575mm	595mm
Top Tube Slope	7deg	6.2deg	5.7deg	4.8deg	4.3deg
Head Tube Angle	70.5deg	71deg	71.5deg	72deg	73deg
Seat Tube Angle	73.5deg	73.5deg	73deg	73deg	72.5deg
Head Tube Length	120mm	130mm	145mm	160mm	175mm
Bottom Bracket Drop	65mm	65mm	65mm	65mm	65mm
Bottom Bracket Height	288mm	288mm	288mm	288mm	288mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	420mm	420mm	420mm	420mm	420mm
Front-Center	579.7mm	585.6mm	600.5mm	622.4mm	637.3mm
Front-Center Horizontal	576mm	582mm	597mm	619mm	634mm
Wheelbase	996mm	1002mm	1017mm	1039mm	1054mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	396mm	396mm	396mm	396mm	396mm
Trail	77.3mm high	74mm high	70.7mm high	67.4mm high	60.9mm mid/neutral
Mechanical Trail	72.8mm	69.9mm	67mm	64.1mm	58.2mm
Wheel Flop	24.3mm	22.8mm	21.3mm	19.8mm	17mm
Tire to Pedal Spindle	56.7mm 170 mm cranks	62.6mm 170 mm cranks	77.5mm 170 mm cranks	99.4mm 170 mm cranks	114.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	118mm 170 mm cranks	118mm 170 mm cranks	118mm 170 mm cranks	118mm 170 mm cranks	118mm 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:https://www.basicbikes.de/rahmenset

Geometry