Compare: 2026 Argon 18 Nitrogen Base L vs 2025 SPCYCLE SP-R088 Base 58

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 endurance road bikes

Design deviates from other sizes of SPCYCLE SP-R088

Stack	580mm	591mm +11mm
Reach	400mm	402mm +2mm
Stack to Reach Ratio	1.45:1	1.47:1
Seat Tube Length, C-T	—	516mm
Seat Tube Length, C-TTT	550mm	—
Top Tube Length, Effective/Horizontal Center	578mm	—
Top Tube Length, Effective/Horizontal HT Top	—	577mm
Top Tube Slope	3.5deg	10deg +6.5deg
Head Tube Angle	72.7deg	73.5deg +0.8deg
Seat Tube Angle	73deg	73.5deg +0.5deg
Head Tube Length	165mm	—
Bottom Bracket Drop	79mm	74mm -5mm
Bottom Bracket Height	262mm	269mm +7mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	402.3mm	403.3mm +1mm
Front-Center	608.8mm	609mm +0.2mm
Front-Center Horizontal	603.7mm	604.7mm +1mm
Wheelbase	1006mm	1008mm +2mm
Fork Offset/Rake	45mm	47.6mm +2.6mm
Fork Length (Axle-To-Crown)	376mm	—
Trail	59.1mm mid/neutral	52mm -7.1mm mid/neutral
Mechanical Trail	56.4mm	49.9mm -6.5mm
Wheel Flop	16.8mm	14.2mm -2.6mm
Tire to Pedal Spindle	95.3mm 172.5 mm cranks	96mm +0.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	89.5mm 172.5 mm cranks	99mm +9.5mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	30mm	32mm +2mm
Tire Width Max	34mm	—
Tire Outer Diameter	682mm	686mm +4mm
Bike Length with Tires	1688mm	1694mm +6mm
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