Compare: 2026 Argon 18 Nitrogen Base 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 Nitrogen

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of Sava Starship

Stack	580mm	580.5mm +0.5mm
Reach	400mm	405mm +5mm
Stack to Reach Ratio	1.45:1	1.43:1
Seat Tube Length, C-TTT	550mm	—
Seat Tube Length, Unknown	—	517mm
Top Tube Length, Effective/Horizontal Center	578mm	—
Top Tube Length, Effective/Horizontal Unknown	—	577mm
Top Tube Slope	3.5deg	8.7deg +5.2deg
Head Tube Angle	72.7deg	73.5deg +0.8deg
Seat Tube Angle	73deg	73.5deg +0.5deg
Head Tube Length	165mm	178mm +13mm
Bottom Bracket Drop	79mm	72mm -7mm
Bottom Bracket Height	262mm	267mm +5mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	402.3mm	403.6mm +1.3mm
Front-Center	608.8mm	612mm +3.2mm
Front-Center Horizontal	603.7mm	607.9mm +4.2mm
Wheelbase	1006mm	1011.5mm +5.5mm
Fork Offset/Rake	45mm	50mm +5mm
Fork Length (Axle-To-Crown)	376mm	—
Fork Length, Unknown	—	368mm
Trail	59.1mm mid/neutral	48.3mm -10.8mm mid/neutral
Mechanical Trail	56.4mm	46.3mm -10.1mm
Wheel Flop	16.8mm	13.1mm -3.7mm
Standover Height	—	803mm
Tire to Pedal Spindle	95.3mm 172.5 mm cranks	103mm +7.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	89.5mm 172.5 mm cranks	97mm +7.5mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	30mm	28mm -2mm
Tire Width Max	34mm	—
Tire Outer Diameter	682mm	678mm -4mm
Bike Length with Tires	1688mm	1689.5mm +1.5mm
Crank Length	172.5mm	—
Handlebar Width	380mm	—
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