Compare: 2023 TanTan Cycling (Seraph) TT-X34 Base L / 56 vs 2024 SEKA Spear Base LR

Insights

Average stack and reach vs trend of performance road bikes

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

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of SEKA Spear

Stack	564mm	560mm -4mm
Reach	394mm	397mm +3mm
Stack to Reach Ratio	1.43:1	1.41:1
Seat Tube Length, C-T	525mm	496mm -29mm
Top Tube Length, Effective/Horizontal Center	—	544mm
Top Tube Length, Effective/Horizontal HT Top	559mm	—
Top Tube Slope	6.3deg	8.9deg +2.6deg
Head Tube Angle	73.5deg	73.1deg -0.4deg
Seat Tube Angle	73.7deg	73.5deg -0.2deg
Head Tube Length	151mm	153mm +2mm
Bottom Bracket Drop	72mm	72mm +0mm
Bottom Bracket Height	269mm	267mm -2mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.6mm	403.6mm +0mm
Front-Center	591mm	595.7mm +4.7mm
Front-Center Horizontal	586.6mm	591.4mm +4.8mm
Wheelbase	990.2mm	995mm +4.8mm
Fork Offset/Rake	45mm	44mm -1mm
Fork Length (Axle-To-Crown)	—	372mm
Trail	54.1mm mid/neutral	57mm +2.9mm mid/neutral
Mechanical Trail	51.9mm	54.6mm +2.7mm
Wheel Flop	14.7mm	15.9mm +1.2mm
Tire to Pedal Spindle	80mm 170 mm cranks	86.7mm +6.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	97mm -2mm 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	1672.2mm	1673mm +0.8mm
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	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://www.sekabikes.com/spear-2/
Brand	TanTan Cycling (Seraph)	SEKA
Bike	2023 TT-X34 Base	2024 Spear Base
Size	L / 56	LR
Category	Performance Road	Performance Road