2024 Pearson On and On Base

	49cm	52cm	54cm	56cm	58cm
Stack	535mm	558mm	582mm	604mm	625mm
Reach	364mm	372mm	380mm	389mm	398mm
Stack to Reach Ratio	1.47:1	1.5:1	1.53:1	1.55:1	1.57:1
Seat Tube Length, C-T	470mm	495mm	520mm	545mm	570mm
Top Tube Length, Effective/Horizontal HT Top	520mm	539mm	552mm	568mm	583mm
Top Tube Slope	9.6deg	9.2deg	9deg	8.5deg	8deg
Head Tube Angle	71deg	71deg	71.5deg	71.5deg	71.5deg
Seat Tube Angle	74deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	100mm	124mm	147mm	171mm	191mm
Bottom Bracket Drop	78mm	78mm	78mm	78mm	78mm
Bottom Bracket Height	273mm	273mm	273mm	273mm	273mm
Chainstay Length	430mm	430mm	430mm	430mm	430mm
Chainstay Length Horizontal	422.9mm	422.9mm	422.9mm	422.9mm	422.9mm
Front-Center	588.3mm	595.3mm	603.2mm	618.1mm	634.9mm
Front-Center Horizontal	583.1mm	590.1mm	598.1mm	613.1mm	630.1mm
Wheelbase	1006mm	1013mm	1021mm	1036mm	1053mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm
Trail	68mm high	68mm high	64.7mm mid/neutral	64.7mm mid/neutral	64.7mm mid/neutral
Mechanical Trail	64.3mm	64.3mm	61.4mm	61.4mm	61.4mm
Wheel Flop	20.9mm	20.9mm	19.5mm	19.5mm	19.5mm
Tire to Pedal Spindle	67.3mm 170 mm cranks	74.3mm 170 mm cranks	82.2mm 170 mm cranks	97.1mm 170 mm cranks	113.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	103mm 170 mm cranks	103mm 170 mm cranks	103mm 170 mm cranks	103mm 170 mm cranks	103mm 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.pearson1860.com/products/on-and-on-grx-610

Geometry