Compare: 2018 DENGFU R01 Ultralight 54cm vs 2017 Ridley Bikes Helium X Base S

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Ridley Bikes Helium X

Stack	541mm	542mm +1mm
Reach	385mm	384mm -1mm
Stack to Reach Ratio	1.41:1	1.41:1
Seat Tube Length, C-T	525mm	510mm -15mm
Seat Tube Length, C-C	480mm	470mm -10mm
Top Tube Length, Effective/Horizontal Center	545mm	545mm +0mm
Top Tube Length, Actual C-C	—	529mm
Top Tube Slope	4deg	7.6deg +3.6deg
Head Tube Angle	73deg	73deg +0deg
Seat Tube Angle	73.5deg	73.5deg +0deg
Head Tube Length	136mm	142mm +6mm
Bottom Bracket Drop	69mm	66mm -3mm
Bottom Bracket Height	267mm	270mm +3mm
Chainstay Length	405mm	405mm +0mm
Chainstay Length Horizontal	399.1mm	399.6mm +0.5mm
Front-Center	580.2mm	581.2mm +1mm
Front-Center Horizontal	575.9mm	577.4mm +1.5mm
Wheelbase	975mm	977mm +2mm
Fork Offset/Rake	44.6mm	45.8mm +1.2mm
Fork Length (Axle-To-Crown)	370mm	—
Trail	56.1mm mid/neutral	54.8mm -1.3mm mid/neutral
Mechanical Trail	53.7mm	52.4mm -1.3mm
Wheel Flop	15.7mm	15.3mm -0.4mm
Tire to Pedal Spindle	74.2mm 170 mm cranks	75.2mm +1mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	100mm +3mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	25mm	25mm +0mm
Tire Outer Diameter	672mm	672mm +0mm
Bike Length with Tires	1647mm	1649mm +2mm
Handlebar Width	420mm	—
Stem Length	100mm	—
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	Rim

Actions	Collection I've Ridden	Collection I've Ridden
Source	https://www.dengfubike.com/collections/carbon-bike-frame/products/r01-frame	ridley
Brand	DENGFU	Ridley Bikes
Bike	2018 R01 Ultralight	2017 Helium X Base
Size	54cm	S
Category	Performance Road	Performance Road