Compare: 2026 Argon 18 Sum Pro L vs 2025 Sava Starship Base 580 (XL)

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Argon 18 Sum

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of Sava Starship

Stack	589mm	580.5mm -8.5mm
Reach	398mm	405mm +7mm
Stack to Reach Ratio	1.48:1	1.43:1
Seat Tube Length, Unknown	550mm	517mm -33mm
Top Tube Length, Effective/Horizontal Unknown	578mm	577mm -1mm
Top Tube Slope	6.4deg	8.7deg +2.3deg
Head Tube Angle	72.7deg	73.5deg +0.8deg
Seat Tube Angle	73deg	73.5deg +0.5deg
Head Tube Length	177mm	178mm +1mm
Bottom Bracket Drop	77mm	72mm -5mm
Bottom Bracket Height	259mm	267mm +8mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	402.7mm	403.6mm +0.9mm
Front-Center	608.2mm	612mm +3.8mm
Front-Center Horizontal	603.3mm	607.9mm +4.6mm
Wheelbase	1006mm	1011.5mm +5.5mm
Fork Offset/Rake	44mm	50mm +6mm
Fork Length, Unknown	374mm	368mm -6mm
Trail	58.6mm mid/neutral	48.3mm -10.3mm mid/neutral
Mechanical Trail	55.9mm	46.3mm -9.6mm
Wheel Flop	16.6mm	13.1mm -3.5mm
Standover Height	—	803mm
Tire to Pedal Spindle	99.7mm 172.5 mm cranks	103mm +3.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	86.5mm 172.5 mm cranks	97mm +10.5mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	25mm	28mm +3mm
Tire Width Max	32mm	—
Tire Outer Diameter	672mm	678mm +6mm
Bike Length with Tires	1678mm	1689.5mm +11.5mm
Crank Length	172.5mm	—
Handlebar Width	44cm	—
Stem Length	110mm	—
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc