Compare: 2023 TanTan Cycling (Seraph) TT-X38 Base 54 vs 2025 Quick Pro ER:ONE Base 520 (L 56CM)

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 Quick Pro ER:ONE

Stack	554mm	556mm +2mm
Reach	388mm	393mm +5mm
Stack to Reach Ratio	1.43:1	1.41:1
Seat Tube Length, C-T	540mm	520mm -20mm
Top Tube Length, Effective/Horizontal Center	551mm	—
Top Tube Length, Effective/Horizontal HT Top	—	558mm
Top Tube Slope	3.8deg	6.1deg +2.3deg
Head Tube Angle	72.5deg	73deg +0.5deg
Seat Tube Angle	73.6deg	73.5deg -0.1deg
Head Tube Length	150mm	148mm -2mm
Bottom Bracket Drop	70mm	70mm +0mm
Bottom Bracket Height	269mm	271mm +2mm
Chainstay Length	410mm	408mm -2mm
Chainstay Length Horizontal	404mm	402mm -2mm
Front-Center	592mm	593.2mm +1.2mm
Front-Center Horizontal	587.9mm	589.1mm +1.2mm
Wheelbase	991.8mm	991mm -0.8mm
Fork Offset/Rake	45mm	45mm +0mm
Fork Length, Unknown	—	373mm
Trail	59.7mm mid/neutral	57.2mm -2.5mm mid/neutral
Mechanical Trail	56.9mm	54.7mm -2.2mm
Wheel Flop	17.1mm	16mm -1.1mm
Standover Height	—	797mm
Tire to Pedal Spindle	83mm 170 mm cranks	82.2mm -0.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	101mm +2mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	30mm +2mm
Tire Outer Diameter	678mm	682mm +4mm
Bike Length with Tires	1669.8mm	1673mm +3.2mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Unknown
Fork Material	Carbon/Composite	Unknown
Brake Type	Disc	Unknown

Actions	Collection I've Ridden	Collection I've Ridden
Source	N/A	https://www.pandapodium.cc/product/quick-pro-erone-aero-road-bike-frameset
Brand	TanTan Cycling (Seraph)	Quick Pro
Bike	2023 TT-X38 Base	2025 ER:ONE Base
Size	54	520 (L 56CM)
Category	Performance Road	Performance Road