Compare: 2019 OG-EVKIN CF-025 Base M vs 2023 TanTan Cycling (Seraph) TT-X34 Base L / 56

Insights

Somewhat upright stack and reach vs trend of performance road bikes

Design deviates from other sizes of OG-EVKIN CF-025

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of TanTan Cycling (Seraph) TT-X34

Stack	574mm	564mm -10mm
Reach	388mm	394mm +6mm
Stack to Reach Ratio	1.48:1	1.43:1
Seat Tube Length, C-T	515mm	525mm +10mm
Top Tube Length, Effective/Horizontal Center	551mm	—
Top Tube Length, Effective/Horizontal HT Top	—	559mm
Top Tube Slope	8.5deg	6.3deg -2.2deg
Head Tube Angle	73.5deg	73.5deg +0deg
Seat Tube Angle	74deg	73.7deg -0.3deg
Head Tube Length	158mm	151mm -7mm
Bottom Bracket Drop	78.9mm	72mm -6.9mm
Bottom Bracket Height	257.1mm	269mm +11.9mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	402.3mm	403.6mm +1.3mm
Front-Center	586mm	591mm +5mm
Front-Center Horizontal	580.7mm	586.6mm +5.9mm
Wheelbase	983mm	990.2mm +7.2mm
Fork Offset/Rake	45mm	45mm +0mm
Trail	52.6mm mid/neutral	54.1mm +1.5mm mid/neutral
Mechanical Trail	50.4mm	51.9mm +1.5mm
Wheel Flop	14.3mm	14.7mm +0.4mm
Tire to Pedal Spindle	80mm 170 mm cranks	80mm +0mm 170 mm cranks
Pedal Spindle to Ground Clearance	87.1mm 170 mm cranks	99mm +11.9mm 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	1655mm	1672.2mm +17.2mm
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.aliexpress.com/item/33033394656.html	http://tantancycling.com/index.php?_m=mod_product&_a=view&p_id=1043
Brand	OG-EVKIN	TanTan Cycling (Seraph)
Bike	2019 CF-025 Base	2023 TT-X34 Base
Size	M	L / 56
Category	Performance Road	Performance Road