2025 TanTan Cycling (Seraph) Tt928 Base

	51	53	56
Stack	485mm	500mm	523mm
Reach	396mm	410mm	434mm
Stack to Reach Ratio	1.22:1	1.22:1	1.21:1
Seat Tube Length, C-TTT	510mm	530mm	560mm
Top Tube Length, Effective/Horizontal Center	504mm	521mm	550mm
Top Tube Slope	-3.6deg	-4deg	-4.4deg
Head Tube Angle	72deg	72deg	72deg
Seat Tube Angle	77.5deg	77.5deg	77.5deg
Head Tube Length	75mm	90mm	115mm
Bottom Bracket Drop	75mm	75mm	75mm
Bottom Bracket Height	264mm	264mm	264mm
Chainstay Length	410mm	410mm	410mm
Chainstay Length Horizontal	403.1mm	403.1mm	403.1mm
Front-Center	574mm	582mm	587mm
Front-Center Horizontal	576.9mm	594.9mm	626.9mm
Wheelbase	980mm	998mm	1030mm
Fork Offset/Rake	45mm	45mm	45mm
Fork Length, Unknown	370mm	370mm	370mm
Trail	62.8mm mid/neutral	62.8mm mid/neutral	62.8mm mid/neutral
Mechanical Trail	59.8mm	59.8mm	59.8mm
Wheel Flop	18.5mm	18.5mm	18.5mm
Standover Height	766mm	782mm	805mm
Tire to Pedal Spindle	65mm 170 mm cranks	73mm 170 mm cranks	78mm 170 mm cranks
Pedal Spindle to Ground Clearance	94mm 170 mm cranks	94mm 170 mm cranks	94mm 170 mm cranks

	51	53	56
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm	28mm
Tire Width Max	32mm	32mm	32mm
Tire Outer Diameter	678mm	678mm	678mm
Bike Length with Tires	1658mm	1676mm	1708mm
Handlebar Width	400mm	400mm	420mm
Stem Length	100mm	100mm	100mm
Stem Angle	-18deg	-18deg	-18deg

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

Triathlon

Source:https://www.seraphbikes.com/UDH-Carbon-Time-Trial-Bicycle-Frame-TT928-TT-Bike-Frame-Aero-Triathlon-Bike-Frameset-High-Quality-Disc-Brake-Max-Tire-70030C-p6901419.html

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2025 TanTan Cycling (Seraph) Tt928 Base

Geometry

Base Build

Stack and Reach vs. Category Trend