2020 Stiff Bicycles Gravel Frontier

	S	M	L	XL
Stack	581.5mm	597.7mm	609.4mm	628.3mm
Reach	369.6mm	379.4mm	387.6mm	396.5mm
Stack to Reach Ratio	1.57:1	1.58:1	1.57:1	1.58:1
Seat Tube Length, C-T	500mm	520mm	540mm	560mm
Top Tube Length, Effective/Horizontal HT Top	545mm	560mm	575mm	590mm
Top Tube Slope	11.3deg	10.7deg	9.7deg	9.4deg
Head Tube Angle	70.7deg	71.2deg	71.2deg	71.2deg
Seat Tube Angle	73.2deg	73.2deg	72.9deg	72.9deg
Head Tube Length	135mm	150mm	165mm	185mm
Bottom Bracket Drop	82.5mm	82.5mm	80mm	80mm
Bottom Bracket Height	278.5mm	278.5mm	281mm	281mm
Chainstay Length	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	427.1mm	427.1mm	427.6mm	427.6mm
Front-Center	602mm	613mm	625mm	640mm
Front-Center Horizontal	596.9mm	606.9mm	619.4mm	635.4mm
Wheelbase	1024mm	1034mm	1047mm	1063mm
Fork Offset/Rake	50mm	50mm	50mm	50mm
Fork Length (On-Axis)	411mm	411mm	411mm	411mm
Trail	73.4mm high	70.1mm high	70.1mm high	70.1mm high
Mechanical Trail	69.3mm	66.3mm	66.3mm	66.3mm
Wheel Flop	22.9mm	21.4mm	21.4mm	21.4mm
Tire to Pedal Spindle	71mm 170 mm cranks	82mm 170 mm cranks	94mm 170 mm cranks	109mm 170 mm cranks
Pedal Spindle to Ground Clearance	108.5mm 170 mm cranks	108.5mm 170 mm cranks	111mm 170 mm cranks	111mm 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://shop.stiffbicycles.com/produit/gravel-frontier/

Geometry