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

Insights

Somewhat aggressive stack and reach vs trend of endurance road bikes

Design deviates from other sizes of SPCYCLE SP-R088

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Argon 18 Nitrogen

Stack	591mm	607mm +16mm
Reach	402mm	409mm +7mm
Stack to Reach Ratio	1.47:1	1.48:1
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	10deg	2deg -8deg
Head Tube Angle	73.5deg	73deg -0.5deg
Seat Tube Angle	73.5deg	72.5deg -1deg
Head Tube Length	—	192mm
Bottom Bracket Drop	74mm	79mm +5mm
Bottom Bracket Height	269mm	262mm -7mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.3mm	402.3mm -1mm
Front-Center	609mm	622.7mm +13.7mm
Front-Center Horizontal	604.7mm	617.7mm +13mm
Wheelbase	1008mm	1020mm +12mm
Fork Offset/Rake	47.6mm	45mm -2.6mm
Fork Length (Axle-To-Crown)	—	376mm
Trail	52mm mid/neutral	57.2mm +5.2mm mid/neutral
Mechanical Trail	49.9mm	54.7mm +4.8mm
Wheel Flop	14.2mm	16mm +1.8mm
Tire to Pedal Spindle	96mm 170 mm cranks	109.2mm +13.2mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	89.5mm -9.5mm 172.5 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	30mm -2mm
Tire Width Max	—	34mm
Tire Outer Diameter	686mm	682mm -4mm
Bike Length with Tires	1694mm	1702mm +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