Compare: 2019 OG-EVKIN CF-025 Base L vs 2023 TanTan Cycling (Seraph) TT-X34 Base XL / 58

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	599mm	584mm -15mm
Reach	395.5mm	399mm +3.5mm
Stack to Reach Ratio	1.51:1	1.46:1
Seat Tube Length, C-T	545mm	553mm +8mm
Top Tube Length, Effective/Horizontal Center	556mm	—
Top Tube Length, Effective/Horizontal HT Top	—	574mm
Top Tube Slope	7.8deg	5.6deg -2.2deg
Head Tube Angle	73.5deg	73.8deg +0.3deg
Seat Tube Angle	74deg	73.3deg -0.7deg
Head Tube Length	185mm	171mm -14mm
Bottom Bracket Drop	77.8mm	72mm -5.8mm
Bottom Bracket Height	258.2mm	269mm +10.8mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	402.6mm	403.6mm +1mm
Front-Center	601mm	598mm -3mm
Front-Center Horizontal	596mm	593.7mm -2.3mm
Wheelbase	998.5mm	997.3mm -1.2mm
Fork Offset/Rake	45mm	45mm +0mm
Trail	52.6mm mid/neutral	52.2mm -0.4mm mid/neutral
Mechanical Trail	50.4mm	50.1mm -0.3mm
Wheel Flop	14.3mm	14mm -0.3mm
Tire to Pedal Spindle	95mm 170 mm cranks	87mm -8mm 170 mm cranks
Pedal Spindle to Ground Clearance	88.2mm 170 mm cranks	99mm +10.8mm 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	1670.5mm	1679.3mm +8.8mm
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	L	XL / 58
Category	Performance Road	Performance Road