Compare: 2017 Ridley Bikes Helium X Base XS vs 2023 TanTan Cycling (Seraph) TT-X34 Base XS / 50

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Ridley Bikes Helium X

Average stack and reach vs trend of performance road bikes

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

Stack	526mm	521mm -5mm
Reach	374mm	377mm +3mm
Stack to Reach Ratio	1.41:1	1.38:1
Seat Tube Length, C-T	480mm	453mm -27mm
Seat Tube Length, C-C	440mm	—
Top Tube Length, Effective/Horizontal Center	525mm	—
Top Tube Length, Effective/Horizontal HT Top	—	521mm
Top Tube Length, Actual C-C	509mm	—
Top Tube Slope	8.5deg	9.6deg +1.1deg
Head Tube Angle	72deg	72.1deg +0.1deg
Seat Tube Angle	74deg	74.6deg +0.6deg
Head Tube Length	127mm	111mm -16mm
Bottom Bracket Drop	68mm	72mm +4mm
Bottom Bracket Height	268mm	269mm +1mm
Chainstay Length	405mm	410mm +5mm
Chainstay Length Horizontal	399.3mm	403.6mm +4.3mm
Front-Center	573.8mm	574mm +0.2mm
Front-Center Horizontal	569.8mm	569.5mm -0.3mm
Wheelbase	969mm	973.1mm +4.1mm
Fork Offset/Rake	44.6mm	45mm +0.4mm
Trail	62.2mm mid/neutral	62.9mm +0.7mm mid/neutral
Mechanical Trail	59.2mm	59.8mm +0.6mm
Wheel Flop	18.3mm	18.4mm +0.1mm
Tire to Pedal Spindle	67.8mm 170 mm cranks	63mm -4.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	98mm 170 mm cranks	99mm +1mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	25mm	30mm +5mm
Tire Outer Diameter	672mm	682mm +10mm
Bike Length with Tires	1641mm	1655.1mm +14.1mm
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	Rim	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	ridley	http://tantancycling.com/index.php?_m=mod_product&_a=view&p_id=1043
Brand	Ridley Bikes	TanTan Cycling (Seraph)
Bike	2017 Helium X Base	2023 TT-X34 Base
Size	XS	XS / 50
Category	Performance Road	Performance Road