Compare: 2025 SPCYCLE SP-R088 Base 58 vs 2026 Argon 18 Sum Pro 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 Sum

Stack	591mm	616mm +25mm
Reach	402mm	407mm +5mm
Stack to Reach Ratio	1.47:1	1.51:1
Seat Tube Length, C-T	516mm	—
Seat Tube Length, Unknown	—	595mm
Top Tube Length, Effective/Horizontal HT Top	577mm	—
Top Tube Length, Effective/Horizontal Unknown	—	600mm
Top Tube Slope	10deg	4.7deg -5.3deg
Head Tube Angle	73.5deg	73deg -0.5deg
Seat Tube Angle	73.5deg	72.5deg -1deg
Head Tube Length	—	205mm
Bottom Bracket Drop	74mm	77mm +3mm
Bottom Bracket Height	269mm	259mm -10mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.3mm	402.7mm -0.6mm
Front-Center	609mm	622.1mm +13.1mm
Front-Center Horizontal	604.7mm	617.3mm +12.6mm
Wheelbase	1008mm	1020mm +12mm
Fork Offset/Rake	47.6mm	44mm -3.6mm
Fork Length, Unknown	—	374mm
Trail	52mm mid/neutral	56.7mm +4.7mm mid/neutral
Mechanical Trail	49.9mm	54.2mm +4.3mm
Wheel Flop	14.2mm	15.9mm +1.7mm
Tire to Pedal Spindle	96mm 170 mm cranks	111.1mm +15.1mm 175 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	84mm -15mm 175 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	25mm -7mm
Tire Width Max	—	32mm
Tire Outer Diameter	686mm	672mm -14mm
Bike Length with Tires	1694mm	1692mm -2mm
Crank Length	—	175mm
Handlebar Width	—	44cm
Stem Length	—	120mm
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