Compare: 2025 TanTan Cycling (Seraph) TT-X71 Base 54 vs 2025 TanTan Cycling (Seraph) TT-X67 Base 54

Insights

Average stack and reach vs trend of performance road bikes

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

Stack	541mm	542mm +1mm
Reach	384mm	384mm +0mm
Stack to Reach Ratio	1.41:1	1.41:1
Seat Tube Length, Unknown	502mm	495mm -7mm
Top Tube Length, Effective/Horizontal HT Top	539mm	—
Top Tube Length, Effective/Horizontal Unknown	—	540mm
Top Tube Slope	6.4deg	7.3deg +0.9deg
Head Tube Angle	72.5deg	72.5deg +0deg
Seat Tube Angle	74deg	74deg +0deg
Head Tube Length	145mm	137mm -8mm
Bottom Bracket Drop	70mm	72mm +2mm
Bottom Bracket Height	269mm	267mm -2mm
Chainstay Length	405mm	405mm +0mm
Chainstay Length Horizontal	398.9mm	398.6mm -0.3mm
Front-Center	593mm	587mm -6mm
Front-Center Horizontal	588.1mm	582.5mm -5.6mm
Wheelbase	987mm	981mm -6mm
Fork Offset/Rake	53mm	48mm -5mm
Fork Length, Unknown	—	370mm
Trail	51.3mm mid/neutral	56.6mm +5.3mm mid/neutral
Mechanical Trail	48.9mm	53.9mm +5mm
Wheel Flop	14.7mm	16.2mm +1.5mm
Standover Height	—	793mm
Tire to Pedal Spindle	84mm 170 mm cranks	78mm -6mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	97mm -2mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm +0mm
Tire Outer Diameter	678mm	678mm +0mm
Bike Length with Tires	1665mm	1659mm -6mm
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

Actions	Collection I've Ridden	Collection I've Ridden
Source	http://tantancycling.com/index.php?_m=mod_product&_a=view&p_id=1199&__A=3b148223ab9502f82e0f044e49b4dd9691754495236_686574	http://tantancycling.com/index.php?_m=mod_product&_a=view&p_id=1186
Brand	TanTan Cycling (Seraph)	TanTan Cycling (Seraph)
Bike	2025 TT-X71 Base	2025 TT-X67 Base
Size	54	54
Category	Performance Road	Performance Road