Compare: 2026 Argon 18 Sum Pro XL 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	616mm	580.5mm -35.5mm
Reach	407mm	405mm -2mm
Stack to Reach Ratio	1.51:1	1.43:1
Seat Tube Length, Unknown	595mm	517mm -78mm
Top Tube Length, Effective/Horizontal Unknown	600mm	577mm -23mm
Top Tube Slope	4.7deg	8.7deg +4deg
Head Tube Angle	73deg	73.5deg +0.5deg
Seat Tube Angle	72.5deg	73.5deg +1deg
Head Tube Length	205mm	178mm -27mm
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	622.1mm	612mm -10.1mm
Front-Center Horizontal	617.3mm	607.9mm -9.4mm
Wheelbase	1020mm	1011.5mm -8.5mm
Fork Offset/Rake	44mm	50mm +6mm
Fork Length, Unknown	374mm	368mm -6mm
Trail	56.7mm mid/neutral	48.3mm -8.4mm mid/neutral
Mechanical Trail	54.2mm	46.3mm -7.9mm
Wheel Flop	15.9mm	13.1mm -2.8mm
Standover Height	—	803mm
Tire to Pedal Spindle	111.1mm 175 mm cranks	103mm -8.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	84mm 175 mm cranks	97mm +13mm 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	1692mm	1689.5mm -2.5mm
Crank Length	175mm	—
Handlebar Width	44cm	—
Stem Length	120mm	—
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