	49cm	52cm	54cm	56cm	58cm	60cm
Stack	550.3mm	565.7mm	581.8mm	600.8mm	619.7mm	638.7mm
Reach	370mm	372.8mm	372.7mm	386.4mm	411.4mm	425.8mm
Stack to Reach Ratio	1.49:1	1.52:1	1.56:1	1.55:1	1.51:1	1.5:1
Seat Tube Length, Unknown	440mm	470mm	490mm	510mm	530mm	550mm
Top Tube Length, Effective/Horizontal Unknown	522mm	535mm	545mm	565mm	595mm	615mm
Top Tube Slope	14.5deg	12.8deg	12.3deg	11.9deg	11.2deg	10.8deg
Head Tube Angle	70.5deg	71deg	71.5deg	71.5deg	71.5deg	71.5deg
Seat Tube Angle	74.5deg	74deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	120mm	135mm	150mm	170mm	190mm	210mm
Bottom Bracket Drop	76mm	76mm	76mm	76mm	76mm	76mm
Bottom Bracket Height	280mm	280mm	280mm	280mm	280mm	280mm
Chainstay Length	420mm	420mm	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	413.1mm	413.1mm	413.1mm	413.1mm	413.1mm	413.1mm
Front-Center	602mm	599.2mm	599.5mm	620.1mm	650.6mm	671.2mm
Front-Center Horizontal	597.1mm	594.3mm	594.6mm	615.4mm	646.1mm	666.8mm
Wheelbase	1010.2mm	1007.4mm	1007.7mm	1028.5mm	1059.2mm	1079.9mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm	50mm
Trail	73mm high	69.7mm high	66.4mm high	66.4mm high	66.4mm high	66.4mm high
Mechanical Trail	68.8mm	65.9mm	63mm	63mm	63mm	63mm
Wheel Flop	23mm	21.5mm	20mm	20mm	20mm	20mm
Standover Height	711mm	725mm	741mm	758mm	775mm	792mm
Tire to Pedal Spindle	76mm 170 mm cranks	73.2mm 170 mm cranks	68.5mm 175 mm cranks	89.1mm 175 mm cranks	119.6mm 175 mm cranks	140.2mm 175 mm cranks
Pedal Spindle to Ground Clearance	110mm 170 mm cranks	110mm 170 mm cranks	105mm 175 mm cranks	105mm 175 mm cranks	105mm 175 mm cranks	105mm 175 mm cranks

	49cm	52cm	54cm	56cm	58cm	60cm
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	45mm	45mm	45mm	45mm	45mm	45mm
Tire Outer Diameter	712mm	712mm	712mm	712mm	712mm	712mm
Bike Length with Tires	1722.2mm	1719.4mm	1719.7mm	1740.5mm	1771.2mm	1791.9mm
Crank Length	170mm	170mm	175mm	175mm	175mm	175mm
Handlebar Width	420mm	420mm	420mm	440mm	440mm	440mm
Stem Length	60mm	60mm	60mm	60mm	70mm	70mm

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://marinbikes.com/en-ca/products/2024-headlands-frame-kit

2024 Marin Bikes Headlands Frame Kit

Geometry