2025 Avona Callis Base

	S	M	L	XL
Stack	545mm	568mm	593mm	618mm
Reach	364mm	376mm	388mm	400mm
Stack to Reach Ratio	1.5:1	1.51:1	1.53:1	1.55:1
Seat Tube Length, C-T	420mm	460mm	490mm	530mm
Top Tube Slope	16.4deg	14.1deg	13.2deg	11.3deg
Head Tube Angle	70deg	71deg	71deg	71deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	110mm	131mm	157mm	183mm
Bottom Bracket Drop	75mm	75mm	75mm	75mm
Bottom Bracket Height	276mm	276mm	276mm	276mm
Chainstay Length	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	413.3mm	413.3mm	413.3mm	413.3mm
Front-Center	593mm	603.3mm	623.8mm	644.2mm
Front-Center Horizontal	588.3mm	598.6mm	619.2mm	639.9mm
Wheelbase	1001.5mm	1011.9mm	1032.5mm	1053.1mm
Fork Offset/Rake	50mm	50mm	50mm	50mm
Fork Length (Axle-To-Crown)	395mm	395mm	395mm	395mm
Trail	74.5mm high	68mm high	68mm high	68mm high
Mechanical Trail	70.1mm	64.3mm	64.3mm	64.3mm
Wheel Flop	24mm	20.9mm	20.9mm	20.9mm
Standover Height	713mm	750mm	779mm	816mm
Tire to Pedal Spindle	72mm 170 mm cranks	82.3mm 170 mm cranks	102.8mm 170 mm cranks	123.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	106mm 170 mm cranks	106mm 170 mm cranks	106mm 170 mm cranks	106mm 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://avona.cc/bike/callis

Geometry