Name: 2026 TanTan Cycling (Seraph) TT-X68 Base
Brand: TanTan Cycling (Seraph)

	49	56	58
Stack	514mm	562mm	591mm
Reach	375mm	388mm	395mm
Stack to Reach Ratio	1.37:1	1.45:1	1.5:1
Seat Tube Length, Unknown	445mm	510mm	535mm
Top Tube Length, Effective/Horizontal Unknown	508mm	555mm	570mm
Top Tube Slope	9.7deg	7.8deg	8.1deg
Head Tube Angle	71.75deg	73deg	73.5deg
Seat Tube Angle	75.5deg	73.5deg	73.5deg
Head Tube Length	109mm	148mm	175mm
Bottom Bracket Drop	74mm	72mm	72mm
Bottom Bracket Height	304mm	306mm	306mm
Chainstay Length	410mm	410mm	410mm
Chainstay Length Horizontal	403.3mm	403.6mm	403.6mm
Front-Center	574.5mm	595.7mm	608.7mm
Front-Center Horizontal	569.7mm	591.4mm	604.4mm
Wheelbase	973mm	995mm	1008mm
Fork Offset/Rake	47mm	45mm	45mm
Fork Length, Unknown	370mm	370mm	370mm
Trail	75.2mm high	68.5mm high	65mm high
Mechanical Trail	71.4mm	65.5mm	62.4mm
Wheel Flop	22.4mm	19.2mm	17.7mm
Standover Height	715mm	785mm	807mm
Tire to Pedal Spindle	31.5mm 165 mm cranks	47.7mm 170 mm cranks	58.2mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	139mm 165 mm cranks	136mm 170 mm cranks	133.5mm 172.5 mm cranks

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

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2026 TanTan Cycling (Seraph) TT-X68 Base

Geometry