2025 Ridley Bikes Astr Essential

	XS	S	M	L	XL
Stack	536mm	550mm	571mm	595mm	619mm
Reach	376mm	392mm	406mm	419mm	432mm
Stack to Reach Ratio	1.43:1	1.4:1	1.41:1	1.42:1	1.43:1
Seat Tube Length, C-T	475mm	500mm	520mm	550mm	575mm
Top Tube Length, Effective/Horizontal Center	525mm	550mm	570mm	590mm	615mm
Top Tube Slope	8.9deg	7.5deg	7.4deg	6.6deg	6.5deg
Head Tube Angle	71deg	71deg	71.5deg	71.5deg	71.5deg
Seat Tube Angle	74.5deg	74deg	74deg	74deg	73.5deg
Head Tube Length	115mm	130mm	150mm	175mm	200mm
Bottom Bracket Drop	75mm	75mm	75mm	75mm	75mm
Bottom Bracket Height	283mm	283mm	283mm	283mm	283mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	418.3mm	418.3mm	418.3mm	418.3mm	418.3mm
Front-Center	592.4mm	613.3mm	629.2mm	650mm	670.9mm
Front-Center Horizontal	587.7mm	608.7mm	624.7mm	645.7mm	666.7mm
Wheelbase	1006mm	1027mm	1043mm	1064mm	1085mm
Fork Offset/Rake	50.1mm	50.2mm	50mm	50mm	49.9mm
Trail	70.3mm high	70.2mm high	67.1mm high	67.1mm high	67.1mm high
Mechanical Trail	66.5mm	66.3mm	63.6mm	63.6mm	63.7mm
Wheel Flop	21.7mm	21.6mm	20.2mm	20.2mm	20.2mm
Tire to Pedal Spindle	64.4mm 170 mm cranks	85.3mm 170 mm cranks	101.2mm 170 mm cranks	122mm 170 mm cranks	142.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	113mm 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.ridley-bikes.com/en_AU/bikes/SBIASTRID078

Geometry