	48CM	50CM	52CM	54CM	56CM	58CM	60CM	62CM
Stack	536.1mm	550.2mm	566.2mm	578.3mm	589.8mm	604mm	627.7mm	644mm
Reach	359.9mm	360mm	370.6mm	375mm	379.9mm	392.9mm	395.9mm	403.6mm
Stack to Reach Ratio	1.49:1	1.53:1	1.53:1	1.54:1	1.55:1	1.54:1	1.59:1	1.6:1
Seat Tube Length, C-T	480mm	500mm	520mm	540mm	560mm	580mm	600mm	620mm
Seat Tube Length, C-C	432.3mm	452.5mm	472.7mm	493.5mm	513.4mm	533.7mm	553.6mm	573.9mm
Top Tube Length, Effective/Horizontal Center	515.9mm	520mm	535mm	553.3mm	561.5mm	584.2mm	594.6mm	607.3mm
Top Tube Slope	8.6deg	8deg	7.4deg	6.6deg	5.7deg	5.1deg	5.5deg	5.1deg
Head Tube Angle	69.5deg	69.5deg	70deg	70deg	70.5deg	71deg	71deg	71.5deg
Seat Tube Angle	74deg	74deg	74deg	73deg	73deg	72.5deg	72.5deg	72.5deg
Head Tube Length	100mm	115mm	130mm	145mm	155mm	170mm	195mm	210mm
Bottom Bracket Drop	77mm	77mm	77mm	75mm	75mm	73mm	73mm	73mm
Bottom Bracket Height	277mm	277mm	277mm	279mm	279mm	281mm	281mm	281mm
Chainstay Length	435mm	435mm	435mm	435mm	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	428.1mm	428.1mm	428.1mm	428.5mm	428.5mm	428.8mm	428.8mm	428.8mm
Front-Center	590mm	595.3mm	606.8mm	616mm	619.5mm	632.9mm	643.9mm	651.5mm
Front-Center Horizontal	584.9mm	590.3mm	601.9mm	611.4mm	614.7mm	628.7mm	639.7mm	647.4mm
Wheelbase	1013mm	1018.4mm	1030mm	1039.9mm	1043.2mm	1057.5mm	1068.5mm	1076.2mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm	50mm	50mm	50mm
Trail	79mm high	79mm high	75.6mm high	75.6mm high	72.3mm high	69mm high	69mm high	65.7mm high
Mechanical Trail	74mm	74mm	71.1mm	71.1mm	68.2mm	65.3mm	65.3mm	62.3mm
Wheel Flop	25.9mm	25.9mm	24.3mm	24.3mm	22.8mm	21.2mm	21.2mm	19.8mm
Standover Height	72165047mm	74765055mm	76765055mm	78765055mm	80365055mm	82265055mm	84465055mm	86065055mm
Tire to Pedal Spindle	71mm 165 mm cranks	76.3mm 165 mm cranks	82.8mm 170 mm cranks	92mm 170 mm cranks	93mm 172.5 mm cranks	106.4mm 172.5 mm cranks	114.9mm 175 mm cranks	122.5mm 175 mm cranks
Pedal Spindle to Ground Clearance	112mm 165 mm cranks	112mm 165 mm cranks	107mm 170 mm cranks	109mm 170 mm cranks	106.5mm 172.5 mm cranks	108.5mm 172.5 mm cranks	106mm 175 mm cranks	106mm 175 mm cranks

	48CM	50CM	52CM	54CM	56CM	58CM	60CM	62CM
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	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	43mm	43mm	43mm	43mm	43mm	43mm	43mm	43mm
Tire Outer Diameter	708mm	708mm	708mm	708mm	708mm	708mm	708mm	708mm
Bike Length with Tires	1721mm	1726.4mm	1738mm	1747.9mm	1751.2mm	1765.5mm	1776.5mm	1784.2mm
Crank Length	165mm	165mm	170mm	170mm	172.5mm	172.5mm	175mm	175mm
Handlebar Width	40mm	40mm	42mm	44mm	44mm	46mm	46mm	46mm
Stem Length	70mm	80mm	90mm	90mm	100mm	100mm	110mm	110mm

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.

Learn more about the Upright/Aggressive Scale

Category Trend

Progressive Gravel

Source:masoncycles.cc

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2026 Mason Cycles Exposure SRAM

Geometry

SRAM Build

Stack and Reach vs. Category Trend