Compare: 2025 TanTan Cycling (Seraph) TT-X67 Base 58 vs 2026 Argon 18 Sum Pro L

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of TanTan Cycling (Seraph) TT-X67

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Argon 18 Sum

Stack	587mm	589mm +2mm
Reach	401mm	398mm -3mm
Stack to Reach Ratio	1.46:1	1.48:1
Seat Tube Length, Unknown	545mm	550mm +5mm
Top Tube Length, Effective/Horizontal Unknown	575mm	578mm +3mm
Top Tube Slope	6.6deg	6.4deg -0.2deg
Head Tube Angle	73.3deg	72.7deg -0.6deg
Seat Tube Angle	73.5deg	73deg -0.5deg
Head Tube Length	181mm	177mm -4mm
Bottom Bracket Drop	72mm	77mm +5mm
Bottom Bracket Height	267mm	259mm -8mm
Chainstay Length	405mm	410mm +5mm
Chainstay Length Horizontal	398.6mm	402.7mm +4.1mm
Front-Center	610mm	608.2mm -1.8mm
Front-Center Horizontal	605.5mm	603.3mm -2.2mm
Wheelbase	1004mm	1006mm +2mm
Fork Offset/Rake	48mm	44mm -4mm
Fork Length, Unknown	370mm	374mm +4mm
Trail	51.6mm mid/neutral	58.6mm +7mm mid/neutral
Mechanical Trail	49.4mm	55.9mm +6.5mm
Wheel Flop	14.2mm	16.6mm +2.4mm
Standover Height	830mm	—
Tire to Pedal Spindle	101mm 170 mm cranks	99.7mm -1.3mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	86.5mm -10.5mm 172.5 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	25mm -3mm
Tire Width Max	32mm	32mm +0mm
Tire Outer Diameter	678mm	672mm -6mm
Bike Length with Tires	1682mm	1678mm -4mm
Crank Length	—	172.5mm
Handlebar Width	—	44cm
Stem Length	—	110mm
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