Compare: 2026 Argon 18 Nitrogen Base XL 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	607mm	591mm -16mm
Reach	409mm	402mm -7mm
Stack to Reach Ratio	1.48:1	1.47:1
Seat Tube Length, C-T	—	516mm
Seat Tube Length, C-TTT	595mm	—
Top Tube Length, Effective/Horizontal Center	601mm	—
Top Tube Length, Effective/Horizontal HT Top	—	577mm
Top Tube Slope	2deg	10deg +8deg
Head Tube Angle	73deg	73.5deg +0.5deg
Seat Tube Angle	72.5deg	73.5deg +1deg
Head Tube Length	192mm	—
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	622.7mm	609mm -13.7mm
Front-Center Horizontal	617.7mm	604.7mm -13mm
Wheelbase	1020mm	1008mm -12mm
Fork Offset/Rake	45mm	47.6mm +2.6mm
Fork Length (Axle-To-Crown)	376mm	—
Trail	57.2mm mid/neutral	52mm -5.2mm mid/neutral
Mechanical Trail	54.7mm	49.9mm -4.8mm
Wheel Flop	16mm	14.2mm -1.8mm
Tire to Pedal Spindle	109.2mm 172.5 mm cranks	96mm -13.2mm 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	1702mm	1694mm -8mm
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