2024 TanTan Cycling (Seraph) TT-R18 Base

	XS	S	M	L	XL
Stack	506mm	522mm	535mm	557mm	583mm
Reach	370mm	375mm	380mm	390mm	402mm
Stack to Reach Ratio	1.37:1	1.39:1	1.41:1	1.43:1	1.45:1
Seat Tube Length, C-T	432mm	460mm	480mm	510mm	540mm
Top Tube Length, Effective/Horizontal HT Top	501mm	520mm	533mm	555mm	575mm
Top Tube Slope	19.6deg	9deg	8.2deg	7.3deg	6.7deg
Head Tube Angle	70.5deg	71deg	72deg	73deg	73.5deg
Seat Tube Angle	755deg	74.5deg	74deg	73.5deg	73.5deg
Head Tube Length	105mm	120mm	130mm	150mm	175mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	269mm	269mm	269mm	269mm	269mm
Chainstay Length	406mm	406mm	406mm	406mm	406mm
Chainstay Length Horizontal	399.9mm	399.9mm	399.9mm	399.9mm	399.9mm
Front-Center	576mm	583mm	582mm	590mm	605mm
Front-Center Horizontal	572.1mm	578.1mm	578.1mm	586.1mm	601.1mm
Wheelbase	972mm	978mm	978mm	986mm	1001mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	373mm	373mm	373mm	373mm	373mm
Trail	72.3mm high	69.1mm high	62.8mm mid/neutral	56.6mm mid/neutral	53.5mm mid/neutral
Mechanical Trail	68.2mm	65.4mm	59.8mm	54.1mm	51.3mm
Wheel Flop	22.8mm	21.3mm	18.5mm	15.8mm	14.6mm
Standover Height	710mm	734mm	755mm	779mm	808mm
Tire to Pedal Spindle	67mm 170 mm cranks	74mm 170 mm cranks	73mm 170 mm cranks	81mm 170 mm cranks	96mm 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

Published Sizing Recommendations

Height

155 cm

165 cm

175 cm

172 cm

182 cm

178 cm

188 cm

185 cm

195 cm

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.

Category Trend

Source:https://www.seraphbikes.com/Super-Light-Carbon-Fiber-T1000-Disc-Road-Bike-Frame-TT-R18-UDH-Hanger-T47-Thread-Max-Tire-32C-p5908204.html