Compare: 2023 TanTan Cycling (Seraph) TT-X38 Base 58 vs 2023 Orbea Orca Aero M31 eLTD 60

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of TanTan Cycling (Seraph) TT-X38

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Orbea Orca Aero

Stack	595mm	606mm +11mm
Reach	400mm	404mm +4mm
Stack to Reach Ratio	1.49:1	1.5:1
Seat Tube Length, C-T	580mm	589mm +9mm
Top Tube Length, Effective/Horizontal Center	582mm	587mm +5mm
Top Tube Slope	4.1deg	4.2deg +0.1deg
Head Tube Angle	73.3deg	73.2deg -0.1deg
Seat Tube Angle	73deg	73.2deg +0.2deg
Head Tube Length	190mm	200.4mm +10.4mm
Bottom Bracket Drop	70mm	74mm +4mm
Bottom Bracket Height	269mm	262mm -7mm
Chainstay Length	410mm	408mm -2mm
Chainstay Length Horizontal	404mm	401.2mm -2.8mm
Front-Center	609mm	614mm +5mm
Front-Center Horizontal	605mm	609.6mm +4.6mm
Wheelbase	1008.9mm	1010.8mm +1.9mm
Fork Offset/Rake	45mm	43mm -2mm
Fork Length (Axle-To-Crown)	—	370mm
Trail	54.7mm mid/neutral	56.5mm +1.8mm mid/neutral
Mechanical Trail	52.4mm	54.1mm +1.7mm
Wheel Flop	15.1mm	15.6mm +0.5mm
Standover Height	—	835.8mm
Tire to Pedal Spindle	100mm 170 mm cranks	108mm +8mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	92mm -7mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	25mm -3mm
Tire Outer Diameter	678mm	672mm -6mm
Bike Length with Tires	1686.9mm	1682.8mm -4.1mm
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	N/A	https://www.orbea.com/gb-en/bicicletas/carretera/orca-aero/cat/orca-aero-m31eltd-pwr-2023#geometry-and-sizes
Brand	TanTan Cycling (Seraph)	Orbea
Bike	2023 TT-X38 Base	2023 Orca Aero M31 eLTD
Size	58	60
Category	Performance Road	Performance Road