Compare: 2023 Orbea Orca Aero M31 eLTD 53 vs 2023 TanTan Cycling (Seraph) TT-X34 Base M / 54

Insights

Average stack and reach vs trend of performance road bikes

Stack	542mm	543mm +1mm
Reach	385mm	386mm +1mm
Stack to Reach Ratio	1.41:1	1.41:1
Seat Tube Length, C-T	524mm	496mm -28mm
Top Tube Length, Effective/Horizontal Center	545.5mm	—
Top Tube Length, Effective/Horizontal HT Top	—	545mm
Top Tube Slope	4.2deg	7.3deg +3.1deg
Head Tube Angle	72.8deg	73deg +0.2deg
Seat Tube Angle	73.5deg	73.7deg +0.2deg
Head Tube Length	134.9mm	131mm -3.9mm
Bottom Bracket Drop	74mm	72mm -2mm
Bottom Bracket Height	262mm	269mm +7mm
Chainstay Length	408mm	410mm +2mm
Chainstay Length Horizontal	401.2mm	403.6mm +2.4mm
Front-Center	579.6mm	582mm +2.4mm
Front-Center Horizontal	574.9mm	577.5mm +2.6mm
Wheelbase	976.1mm	981.2mm +5.1mm
Fork Offset/Rake	43mm	45mm +2mm
Fork Length (Axle-To-Crown)	370mm	—
Trail	59mm mid/neutral	57.2mm -1.8mm mid/neutral
Mechanical Trail	56.4mm	54.7mm -1.7mm
Wheel Flop	16.7mm	16mm -0.7mm
Standover Height	775mm	—
Tire to Pedal Spindle	73.6mm 170 mm cranks	71mm -2.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	92mm 170 mm cranks	99mm +7mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	25mm	30mm +5mm
Tire Outer Diameter	672mm	682mm +10mm
Bike Length with Tires	1648.1mm	1663.2mm +15.1mm
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	https://www.orbea.com/gb-en/bicicletas/carretera/orca-aero/cat/orca-aero-m31eltd-pwr-2023#geometry-and-sizes	http://tantancycling.com/index.php?_m=mod_product&_a=view&p_id=1043
Brand	Orbea	TanTan Cycling (Seraph)
Bike	2023 Orca Aero M31 eLTD	2023 TT-X34 Base
Size	53	M / 54
Category	Performance Road	Performance Road