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

Insights

Somewhat upright stack and reach vs trend of performance road bikes

Bar type unusual for category

This: Aero Bar
Category: Drop Bar

Somewhat aggressive stack and reach vs trend of endurance road bikes

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

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

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