Compare: 2025 TanTan Cycling (Seraph) TT-X67 Base 54 vs 2026 Argon 18 Sum Pro S

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	542mm	540mm -2mm
Reach	384mm	382mm -2mm
Stack to Reach Ratio	1.41:1	1.41:1
Seat Tube Length, Unknown	495mm	460mm -35mm
Top Tube Length, Effective/Horizontal Unknown	540mm	538mm -2mm
Top Tube Slope	7.3deg	10.9deg +3.6deg
Head Tube Angle	72.5deg	72.7deg +0.2deg
Seat Tube Angle	74deg	74deg +0deg
Head Tube Length	137mm	126mm -11mm
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	587mm	577.5mm -9.5mm
Front-Center Horizontal	582.5mm	572.3mm -10.2mm
Wheelbase	981mm	975mm -6mm
Fork Offset/Rake	48mm	44mm -4mm
Fork Length, Unknown	370mm	374mm +4mm
Trail	56.6mm mid/neutral	58.6mm +2mm mid/neutral
Mechanical Trail	53.9mm	55.9mm +2mm
Wheel Flop	16.2mm	16.6mm +0.4mm
Standover Height	793mm	—
Tire to Pedal Spindle	78mm 170 mm cranks	71.5mm -6.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	89mm -8mm 170 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	1659mm	1647mm -12mm
Crank Length	—	170mm
Handlebar Width	—	42cm
Stem Length	—	90mm
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