Compare: 2019 DENGFU R12 Base 56 vs 2026 XDS X-LAB AD8 Base XL

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of DENGFU R12

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of XDS X-LAB AD8

Stack	567.2mm	575mm +7.8mm
Reach	397mm	405mm +8mm
Stack to Reach Ratio	1.43:1	1.42:1
Seat Tube Length, C-T	530mm	565mm +35mm
Top Tube Length, Effective/Horizontal Center	565mm	—
Top Tube Length, Actual C-C	—	579mm
Top Tube Slope	6.2deg	3.5deg -2.7deg
Head Tube Angle	73deg	73deg +0deg
Seat Tube Angle	73.5deg	73deg -0.5deg
Head Tube Length	160mm	171mm +11mm
Bottom Bracket Drop	71mm	70mm -1mm
Bottom Bracket Height	268mm	269mm +1mm
Chainstay Length	408mm	410mm +2mm
Chainstay Length Horizontal	401.8mm	404mm +2.2mm
Front-Center	597.9mm	607mm +9.1mm
Front-Center Horizontal	593.6mm	603mm +9.4mm
Wheelbase	995.4mm	1007mm +11.6mm
Fork Offset/Rake	43mm	43mm +0mm
Fork Length, Unknown	370mm	—
Trail	58.7mm mid/neutral	58.7mm +0mm mid/neutral
Mechanical Trail	56.1mm	56.1mm +0mm
Wheel Flop	16.4mm	16.4mm +0mm
Standover Height	—	834mm
Tire to Pedal Spindle	88.9mm 170 mm cranks	98mm +9.1mm 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	28mm	28mm +0mm
Tire Width Max	32mm	—
Tire Outer Diameter	678mm	678mm +0mm
Bike Length with Tires	1673.4mm	1685mm +11.6mm
Crank Length	—	170mm
Handlebar Width	—	400mm
Stem Length	—	120mm
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	Disc	Disc