Compare: 2017 Ridley Bikes Helium X Base L vs 2021 DENGFU FM098 Disc 58cm

Insights

Somewhat upright 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

Stack	599mm	593.7mm -5.3mm
Reach	396mm	401mm +5mm
Stack to Reach Ratio	1.51:1	1.48:1
Seat Tube Length, C-T	570mm	520mm -50mm
Seat Tube Length, C-C	530mm	—
Top Tube Length, Effective/Horizontal Center	585mm	582.5mm -2.5mm
Top Tube Length, Actual C-C	567mm	—
Top Tube Slope	7.2deg	9.9deg +2.7deg
Head Tube Angle	73.5deg	73.5deg +0deg
Seat Tube Angle	72.5deg	73deg +0.5deg
Head Tube Length	202mm	190mm -12mm
Bottom Bracket Drop	63mm	70mm +7mm
Bottom Bracket Height	273mm	273mm +0mm
Chainstay Length	408mm	405mm -3mm
Chainstay Length Horizontal	403.1mm	398.9mm -4.2mm
Front-Center	605.2mm	605mm -0.2mm
Front-Center Horizontal	601.9mm	603mm +1.1mm
Wheelbase	1005mm	1001.9mm -3.1mm
Fork Offset/Rake	45.2mm	44.9mm -0.3mm
Fork Length, Unknown	—	368mm
Trail	52.4mm mid/neutral	54.7mm +2.3mm mid/neutral
Mechanical Trail	50.3mm	52.5mm +2.2mm
Wheel Flop	14.3mm	14.9mm +0.6mm
Tire to Pedal Spindle	99.2mm 170 mm cranks	92mm -7.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	103mm 170 mm cranks	103mm +0mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	25mm	32mm +7mm
Tire Outer Diameter	672mm	686mm +14mm
Bike Length with Tires	1677mm	1687.9mm +10.9mm
Handlebar Width	—	440mm
Stem Length	—	110mm
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	https://www.dengfubike.com/collections/carbon-bike-frame/products/fm098-disc-frame
Brand	Ridley Bikes	DENGFU
Bike	2017 Helium X Base	2021 FM098 Disc
Size	L	58cm
Category	Performance Road	Performance Road