2025 Ritchey Design Septimer Breakaway Base

	Small	Medium	Large	Extra Large
Stack	542mm	569mm	591mm	614mm
Reach	380mm	388mm	400mm	415mm
Stack to Reach Ratio	1.43:1	1.47:1	1.48:1	1.48:1
Seat Tube Length, Unknown	480mm	515mm	525mm	535mm
Top Tube Length, Effective/Horizontal Unknown	535mm	557mm	575mm	603mm
Top Tube Slope	8.9deg	8deg	9.1deg	10.2deg
Head Tube Angle	71deg	70.8deg	71.5deg	72.5deg
Seat Tube Angle	74deg	73.5deg	73.5deg	73deg
Head Tube Length	120mm	150mm	170mm	190mm
Bottom Bracket Drop	75mm	75mm	75mm	75mm
Bottom Bracket Height	286mm	286mm	286mm	286mm
Chainstay Length	440mm	440mm	440mm	440mm
Chainstay Length Horizontal	433.6mm	433.6mm	433.6mm	433.6mm
Front-Center	598.2mm	617mm	629.9mm	641.8mm
Front-Center Horizontal	593.4mm	612.4mm	625.4mm	637.4mm
Wheelbase	1027mm	1046mm	1059mm	1071mm
Fork Offset/Rake	50mm	50mm	50mm	50mm
Trail	71.4mm high	72.8mm high	68.1mm high	61.4mm mid/neutral
Mechanical Trail	67.5mm	68.7mm	64.6mm	58.6mm
Wheel Flop	22mm	22.6mm	20.5mm	17.6mm
Standover Height	774.7mm	809mm	823.6mm	838mm
Tire to Pedal Spindle	67.2mm 170 mm cranks	86mm 170 mm cranks	98.9mm 170 mm cranks	110.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks	116mm 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.

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Source:https://ritcheylogic.com/

Geometry