Compare: 2023 TanTan Cycling (Seraph) TT-X38 Base 56 vs 2023 Orbea Orca Aero M31 eLTD 57

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	575mm	580mm +5mm
Reach	394mm	398mm +4mm
Stack to Reach Ratio	1.46:1	1.46:1
Seat Tube Length, C-T	560mm	564mm +4mm
Top Tube Length, Effective/Horizontal Center	566mm	573.1mm +7.1mm
Top Tube Slope	4deg	4.1deg +0.1deg
Head Tube Angle	73deg	73.2deg +0.2deg
Seat Tube Angle	73.3deg	73.2deg -0.1deg
Head Tube Length	170mm	173.2mm +3.2mm
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	600mm	600.3mm +0.3mm
Front-Center Horizontal	595.9mm	595.7mm -0.2mm
Wheelbase	999.9mm	996.9mm -3mm
Fork Offset/Rake	45mm	43mm -2mm
Fork Length (Axle-To-Crown)	—	370mm
Trail	56.6mm mid/neutral	56.6mm +0mm mid/neutral
Mechanical Trail	54.1mm	54.1mm +0mm
Wheel Flop	15.8mm	15.7mm -0.1mm
Standover Height	—	811.6mm
Tire to Pedal Spindle	91mm 170 mm cranks	94.3mm +3.3mm 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	1677.9mm	1668.9mm -9mm
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	56	57
Category	Performance Road	Performance Road