2024 S-PARTS Gravel Base

	S	M	L
Stack	557.5mm	573.6mm	587.8mm
Reach	360.1mm	370.1mm	380.3mm
Stack to Reach Ratio	1.55:1	1.55:1	1.55:1
Seat Tube Length, C-T	480mm	510mm	540mm
Top Tube Length, Effective/Horizontal Center	520mm	540mm	560mm
Top Tube Slope	11deg	9.3deg	7.6deg
Head Tube Angle	70.5deg	71deg	71deg
Seat Tube Angle	74deg	73.5deg	73deg
Head Tube Length	125mm	140mm	155mm
Bottom Bracket Drop	72mm	72mm	72mm
Bottom Bracket Height	279mm	279mm	279mm
Chainstay Length	435mm	435mm	435mm
Chainstay Length Horizontal	429mm	429mm	429mm
Front-Center	584.3mm	594.8mm	609.8mm
Front-Center Horizontal	579.8mm	590.4mm	605.5mm
Wheelbase	1008.8mm	1019.4mm	1034.5mm
Fork Offset/Rake	55mm	55mm	55mm
Fork Length (On-Axis)	395mm	395mm	395mm
Trail	66mm high	62.7mm mid/neutral	62.7mm mid/neutral
Mechanical Trail	62.2mm	59.3mm	59.3mm
Wheel Flop	20.8mm	19.3mm	19.3mm
Standover Height	770mm	790mm	810mm
Tire to Pedal Spindle	63.3mm 170 mm cranks	73.8mm 170 mm cranks	88.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	109mm 170 mm cranks	109mm 170 mm cranks	109mm 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://spartsti.com/products/gravelbikeframe

Geometry