Compare: 2023 TanTan Cycling (Seraph) TT-X34 Base XS / 50 vs 2024 SEKA Spear Base S

Insights

Average stack and reach vs trend of performance road bikes

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

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of SEKA Spear

Stack	521mm	524mm +3mm
Reach	377mm	370mm -7mm
Stack to Reach Ratio	1.38:1	1.42:1
Seat Tube Length, C-T	453mm	463mm +10mm
Top Tube Length, Effective/Horizontal Center	—	497mm
Top Tube Length, Effective/Horizontal HT Top	521mm	—
Top Tube Slope	9.6deg	8.9deg -0.7deg
Head Tube Angle	72.1deg	71.7deg -0.4deg
Seat Tube Angle	74.6deg	74.8deg +0.2deg
Head Tube Length	111mm	120mm +9mm
Bottom Bracket Drop	72mm	74mm +2mm
Bottom Bracket Height	269mm	265mm -4mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.6mm	403.3mm -0.3mm
Front-Center	574mm	574.5mm +0.5mm
Front-Center Horizontal	569.5mm	569.7mm +0.2mm
Wheelbase	973.1mm	973mm -0.1mm
Fork Offset/Rake	45mm	48mm +3mm
Fork Length (Axle-To-Crown)	—	372mm
Trail	62.9mm mid/neutral	61.6mm -1.3mm mid/neutral
Mechanical Trail	59.8mm	58.4mm -1.4mm
Wheel Flop	18.4mm	18.4mm +0mm
Tire to Pedal Spindle	63mm 170 mm cranks	65.5mm +2.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	95mm -4mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	30mm	28mm -2mm
Tire Outer Diameter	682mm	678mm -4mm
Bike Length with Tires	1655.1mm	1651mm -4.1mm
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	Rim

Actions	Collection I've Ridden	Collection I've Ridden
Source	http://tantancycling.com/index.php?_m=mod_product&_a=view&p_id=1043	https://mp.weixin.qq.com/s/1tTF6ryX5Hz-rCWaa0TTHw
Brand	TanTan Cycling (Seraph)	SEKA
Bike	2023 TT-X34 Base	2024 Spear Base
Size	XS / 50	S
Category	Performance Road	Performance Road