2025 TanTan Cycling (Seraph) TT-X8 Base

	45	43	48	45	51	48	53	51	55	53	55
Stack	479.1mm	479.1mm	498mm	498mm	507.5mm	507.5mm	526.4mm	526.4mm	542.5mm	542.5mm	560.9mm
Reach	343mm	343mm	356.6mm	356.6mm	383.3mm	383.3mm	409mm	409mm	424mm	424.6mm	439.8mm
Stack to Reach Ratio	1.4:1	1.4:1	1.4:1	1.4:1	1.32:1	1.32:1	1.29:1	1.29:1	1.28:1	1.28:1	1.28:1
Seat Tube Length, C-T	428mm	428mm	450mm	450mm	480mm	480mm	510mm	510mm	530mm	530mm	550mm
Top Tube Length, Actual C-C	470.7mm	470.7mm	490mm	490mm	519.8mm	519.8mm	550mm	550mm	570mm	570mm	590.2mm
Top Tube Slope	8.2deg	8.2deg	7.6deg	7.6deg	4.9deg	4.9deg	3.6deg	3.6deg	3.1deg	3.1deg	2.9deg
Head Tube Angle	71deg	71deg	71deg	71deg	71deg	71deg	71deg	71deg	71deg	71deg	71deg
Seat Tube Angle	75deg	75deg	75deg	75deg	75deg	75deg	75deg	75deg	75deg	75deg	75deg
Head Tube Length	80mm	80mm	100mm	100mm	110mm	110mm	130mm	130mm	147mm	147mm	167mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm	70mm	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	269mm	269mm	269mm	269mm	269mm	269mm	269mm	269mm	269mm	269mm	269mm
Chainstay Length	405mm	405mm	405mm	405mm	405mm	405mm	405mm	405mm	405mm	405mm	405mm
Chainstay Length Horizontal	398.9mm	398.9mm	398.9mm	398.9mm	398.9mm	398.9mm	398.9mm	398.9mm	398.9mm	398.9mm	398.9mm
Front-Center	534mm	534mm	553.8mm	553.8mm	584.1mm	584.1mm	615.2mm	615.2mm	636.7mm	636.7mm	658.2mm
Front-Center Horizontal	529.4mm	529.4mm	549.4mm	549.4mm	579.9mm	579.9mm	611.2mm	611.2mm	632.8mm	632.8mm	654.5mm
Wheelbase	928.3mm	928.3mm	948.3mm	948.3mm	978.8mm	978.8mm	1010.1mm	1010.1mm	1031.7mm	1031.7mm	1053.4mm
Fork Offset/Rake	43mm	43mm	43mm	43mm	43mm	43mm	43mm	43mm	43mm	43mm	43mm
Fork Length (On-Axis)	367.5mm	367.5mm	367.5mm	367.5mm	367.5mm	367.5mm	367.5mm	367.5mm	367.5mm	367.5mm	367.5mm
Trail	71.3mm high	71.3mm high	71.3mm high	71.3mm high	71.3mm high	71.3mm high	71.3mm high	71.3mm high	71.3mm high	71.3mm high	71.3mm high
Mechanical Trail	67.4mm	67.4mm	67.4mm	67.4mm	67.4mm	67.4mm	67.4mm	67.4mm	67.4mm	67.4mm	67.4mm
Wheel Flop	21.9mm	21.9mm	21.9mm	21.9mm	21.9mm	21.9mm	21.9mm	21.9mm	21.9mm	21.9mm	21.9mm
Tire to Pedal Spindle	25mm 170 mm cranks	25mm 170 mm cranks	44.8mm 170 mm cranks	44.8mm 170 mm cranks	75.1mm 170 mm cranks	75.1mm 170 mm cranks	106.2mm 170 mm cranks	106.2mm 170 mm cranks	127.7mm 170 mm cranks	127.7mm 170 mm cranks	149.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks

	45	43	48	45	51	48	53	51	55	53	55
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm	28mm	28mm	28mm	28mm	28mm	28mm	28mm	28mm	28mm
Tire Outer Diameter	678mm	678mm	678mm	678mm	678mm	678mm	678mm	678mm	678mm	678mm	678mm
Bike Length with Tires	1606.3mm	1606.3mm	1626.3mm	1626.3mm	1656.8mm	1656.8mm	1688.1mm	1688.1mm	1709.7mm	1709.7mm	1731.4mm

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.

Learn more about the Upright/Aggressive Scale

Category Trend

Performance Road

Source:http://www.tantancycling.com/index.php?_m=mod_product&_a=view&p_id=963

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2025 TanTan Cycling (Seraph) TT-X8 Base

Geometry

Base Build

Stack and Reach vs. Category Trend