Compare: 2025 Sava Starship Base 490 (XS) vs 2026 Argon 18 Sum Pro XS

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Sava Starship

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Argon 18 Sum

Stack	509.3mm	517mm +7.7mm
Reach	376.3mm	374mm -2.3mm
Stack to Reach Ratio	1.35:1	1.38:1
Seat Tube Length, Unknown	447mm	425mm -22mm
Top Tube Length, Effective/Horizontal Unknown	518mm	520mm +2mm
Top Tube Slope	9deg	12.4deg +3.4deg
Head Tube Angle	71.75deg	72.1deg +0.35deg
Seat Tube Angle	74.5deg	74.5deg +0deg
Head Tube Length	110mm	110mm +0mm
Bottom Bracket Drop	72mm	73mm +1mm
Bottom Bracket Height	267mm	263mm -4mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.6mm	403.5mm -0.1mm
Front-Center	577.7mm	573.2mm -4.5mm
Front-Center Horizontal	573.4mm	568.6mm -4.8mm
Wheelbase	977mm	972mm -5mm
Fork Offset/Rake	50mm	48mm -2mm
Fork Length, Unknown	368mm	374mm +6mm
Trail	59.1mm mid/neutral	58.1mm -1mm mid/neutral
Mechanical Trail	56.2mm	55.3mm -0.9mm
Wheel Flop	17.6mm	17mm -0.6mm
Standover Height	732mm	—
Tire to Pedal Spindle	68.7mm 170 mm cranks	67.2mm -1.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	93mm -4mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	25mm -3mm
Tire Width Max	—	32mm
Tire Outer Diameter	678mm	672mm -6mm
Bike Length with Tires	1655mm	1644mm -11mm
Crank Length	—	170mm
Handlebar Width	—	40cm
Stem Length	—	80mm
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