2021 SID Composites GSID Vanguard Frameset

	XS	S	M	L	XL
Stack	536mm	552mm	573mm	593mm	613mm
Reach	366mm	376mm	390mm	404mm	418mm
Stack to Reach Ratio	1.46:1	1.47:1	1.47:1	1.47:1	1.47:1
Seat Tube Length, C-T	500mm	530mm	550mm	570mm	590mm
Top Tube Length, Effective/Horizontal HT Top	525mm	540mm	560mm	575mm	580mm
Top Tube Slope	6.4deg	4.8deg	4.8deg	4.7deg	4.6deg
Head Tube Angle	71deg	71.5deg	72deg	72.5deg	72.5deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	115mm	130mm	150mm	170mm	190mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	286mm	286mm	286mm	286mm	286mm
Chainstay Length	435mm	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	429.3mm	429.3mm	429.3mm	429.3mm	429.3mm
Front-Center	584mm	604mm	610mm	625mm	646mm
Front-Center Horizontal	579.7mm	590.7mm	605.7mm	621.7mm	641.7mm
Wheelbase	1009mm	1020mm	1035mm	1051mm	1071mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm
Fork Length, Unknown	395mm	395mm	395mm	395mm	395mm
Trail	69.7mm high	66.4mm high	63.1mm mid/neutral	59.8mm mid/neutral	59.8mm mid/neutral
Mechanical Trail	65.9mm	63mm	60mm	57.1mm	57.1mm
Wheel Flop	21.5mm	20mm	18.5mm	17.2mm	17.2mm
Tire to Pedal Spindle	58mm 170 mm cranks	78mm 170 mm cranks	84mm 170 mm cranks	99mm 170 mm cranks	120mm 170 mm cranks
Pedal Spindle to Ground Clearance	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks	116mm 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.sid.bike/collections/gravel/products/gsid-vanguard-2021-frameset

Geometry