Compare: 2023 TanTan Cycling (Seraph) TT-X68 Base 54 vs 2026 TWITTER Bikes X7 Base 53

Insights

Somewhat aggressive stack and reach vs trend of endurance road bikes

Design deviates from other sizes of TanTan Cycling (Seraph) TT-X68

Somewhat upright stack and reach vs trend of performance road bikes

Bar type unusual for category

This: Aero Bar
Category: Drop Bar

Stack	544mm	546mm +2mm
Reach	384mm	375mm -9mm
Stack to Reach Ratio	1.42:1	1.46:1
Seat Tube Length, Unknown	473mm	497mm +24mm
Top Tube Length, Effective/Horizontal Center	540mm	—
Top Tube Length, Effective/Horizontal Unknown	—	565mm
Top Tube Slope	9.9deg	7.7deg -2.2deg
Head Tube Angle	73deg	73.5deg +0.5deg
Seat Tube Angle	74deg	73.5deg -0.5deg
Head Tube Length	137mm	151mm +14mm
Bottom Bracket Drop	72mm	72mm +0mm
Bottom Bracket Height	271mm	269mm -2mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.6mm	403.6mm +0mm
Front-Center	579mm	594mm +15mm
Front-Center Horizontal	574.4mm	590.4mm +16mm
Wheelbase	978mm	994mm +16mm
Fork Offset/Rake	44mm	44mm +0mm
Fork Length (Axle-To-Crown)	370mm	—
Fork Length, Unknown	—	367mm
Trail	58.9mm mid/neutral	55.1mm -3.8mm mid/neutral
Mechanical Trail	56.3mm	52.9mm -3.4mm
Wheel Flop	16.5mm	15mm -1.5mm
Standover Height	767mm	763mm -4mm
Tire to Pedal Spindle	63.5mm 172.5 mm cranks	83mm +19.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	98.5mm 172.5 mm cranks	99mm +0.5mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	30mm -2mm
Tire Width Max	32mm	—
Tire Outer Diameter	686mm	682mm -4mm
Bike Length with Tires	1664mm	1676mm +12mm
Crank Length	172.5mm	—
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Aero Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc