	SML	SML-MED	MED	LRG	XL	XXL	3XL
Stack	570.2mm	579.1mm	583.8mm	595.2mm	618.9mm	635.2mm	654.2mm
Reach	370.2mm	387.4mm	390.1mm	408.2mm	428.8mm	434.6mm	435mm
Stack to Reach Ratio	1.54:1	1.49:1	1.5:1	1.46:1	1.44:1	1.46:1	1.5:1
Seat Tube Length, C-T	470mm	480mm	490mm	510mm	530mm	550mm	560mm
Top Tube Length, Effective/Horizontal HT Top	525mm	550.2mm	560mm	585mm	615mm	630mm	635mm
Head Tube Angle	69deg	70deg	70deg	70.5deg	70.5deg	71deg	71deg
Effective Seat Tube Angle, ETT HT Top	69.5deg	69deg	68.5deg	68.25deg	68.25deg	68deg	68.25deg
Head Tube Length	90mm	95mm	100mm	109.9mm	135mm	150mm	170mm
Bottom Bracket Drop	95mm	95mm	95mm	95mm	95mm	95mm	95mm
Bottom Bracket Height	303mm	303mm	303mm	303mm	303mm	303mm	303mm
Chainstay Length	450mm	450mm	450mm	450mm	450mm	450mm	450mm
Chainstay Length Horizontal	439.9mm	439.9mm	439.9mm	439.9mm	439.9mm	439.9mm	439.9mm
Front-Center	624.2mm	634.6mm	638.9mm	655.9mm	684.6mm	690.7mm	697.5mm
Front-Center Horizontal	616.9mm	627.4mm	631.8mm	649mm	677.9mm	684.1mm	691mm
Wheelbase	1056.8mm	1067.3mm	1071.7mm	1088.9mm	1117.8mm	1124mm	1130.9mm
Fork Offset/Rake	60mm	60mm	60mm	60mm	60mm	60mm	60mm
Trail	88.5mm very high	81mm very high	81mm very high	77.3mm high	77.3mm high	73.6mm high	73.6mm high
Mechanical Trail	82.6mm	76.1mm	76.1mm	72.9mm	72.9mm	69.6mm	69.6mm
Wheel Flop	29.6mm	26mm	26mm	24.3mm	24.3mm	22.7mm	22.7mm
Standover Height	802.7mm	810mm	816.6mm	830.8mm	851.9mm	869.1mm	883.4mm
Tire to Pedal Spindle	56.2mm 170 mm cranks	66.6mm 170 mm cranks	70.9mm 170 mm cranks	87.9mm 170 mm cranks	116.6mm 170 mm cranks	122.7mm 170 mm cranks	129.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	133mm 170 mm cranks	133mm 170 mm cranks	133mm 170 mm cranks	133mm 170 mm cranks	133mm 170 mm cranks	133mm 170 mm cranks	133mm 170 mm cranks

	SML	SML-MED	MED	LRG	XL	XXL	3XL
Wheel Size	32 in 686 mm BSD	32 in 686 mm BSD	32 in 686 mm BSD	32 in 686 mm BSD	32 in 686 mm BSD	32 in 686 mm BSD	32 in 686 mm BSD
Tire Width	55mm	55mm	55mm	55mm	55mm	55mm	55mm
Tire Outer Diameter	796mm	796mm	796mm	796mm	796mm	796mm	796mm
Bike Length with Tires	1852.8mm	1863.3mm	1867.7mm	1884.9mm	1913.8mm	1920mm	1926.9mm

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

All-road/Gravel

Source:mosaiccycles.com

Suggest Bike Edit

2026 Mosaic Cycles GT-1 i55 32" Base

Geometry

Base Build

Stack and Reach vs. Category Trend