Compare: 2022 TanTan Cycling (Seraph) FM639 Base 54 vs 2025 Cervelo Cycles Soloist Frameset 54

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of TanTan Cycling (Seraph) FM639

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Cervelo Cycles Soloist

Stack	548mm	540mm -8mm
Reach	380mm	383mm +3mm
Stack to Reach Ratio	1.44:1	1.41:1
Seat Tube Length, C-T	463mm	507mm +44mm
Top Tube Length, Effective/Horizontal Center	—	548mm
Top Tube Length, Effective/Horizontal Unknown	548mm	—
Top Tube Slope	11.5deg	5.9deg -5.6deg
Head Tube Angle	73deg	73deg +0deg
Seat Tube Angle	73deg	73deg +0deg
Head Tube Length	140mm	130mm -10mm
Bottom Bracket Drop	72mm	72mm +0mm
Bottom Bracket Height	267mm	267mm +0mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Max	—	410mm
Chainstay Length Horizontal	403.6mm	403.6mm +0mm
Chainstay Length Horizontal Max	—	403.6mm
Front-Center	577mm	578mm +1mm
Front-Center Horizontal	572.4mm	573.5mm +1.1mm
Wheelbase	976mm	977.1mm +1.1mm
Wheelbase Max	—	977mm
Fork Offset/Rake	45mm	45.5mm +0.5mm
Trail	56.6mm mid/neutral	56.1mm -0.5mm mid/neutral
Mechanical Trail	54.1mm	53.6mm -0.5mm
Wheel Flop	15.8mm	15.7mm -0.1mm
Standover Height	753mm	774mm +21mm
Tire to Pedal Spindle	68mm 170 mm cranks	69mm +1mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	97mm +0mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm +0mm
Tire Width Max	28mm	—
Tire Outer Diameter	678mm	678mm +0mm
Bike Length with Tires	1654mm	1655.1mm +1.1mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Unknown	Carbon/Composite
Fork Material	Unknown	Carbon/Composite
Brake Type	Unknown	Disc