Compare: 2025 Alvas DA Series DA54 L vs 2026 XDS X-LAB AD8 Base L

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Alvas DA Series

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of XDS X-LAB AD8

Stack	560mm	553mm -7mm
Reach	393mm	395mm +2mm
Stack to Reach Ratio	1.42:1	1.4:1
Seat Tube Length, C-T	—	540mm
Seat Tube Length, C-TTT	533mm	—
Top Tube Length, Effective/Horizontal HT Top	559mm	—
Top Tube Length, Actual C-C	—	559mm
Top Tube Slope	—	3.6deg
Head Tube Angle	73.25deg	73deg -0.25deg
Seat Tube Angle	—	74deg
Effective Seat Tube Angle, Seat Tube Top	73.5deg	—
Head Tube Length	144mm	148mm +4mm
Bottom Bracket Drop	—	70mm
Bottom Bracket Height	—	269mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	—	404mm
Front-Center	—	592mm
Front-Center Horizontal	—	588mm
Wheelbase	988mm	992mm +4mm
Fork Offset/Rake	42mm	43mm +1mm
Trail	57.3mm mid/neutral	58.7mm +1.4mm mid/neutral
Mechanical Trail	54.8mm	56.1mm +1.3mm
Wheel Flop	15.8mm	16.4mm +0.6mm
Standover Height	804mm	811mm +7mm
Tire to Pedal Spindle	— 170 mm cranks	88mm 165 mm cranks
Pedal Spindle to Ground Clearance	— 170 mm cranks	104mm 165 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	25mm	28mm +3mm
Tire Width Max	32mm	—
Tire Outer Diameter	672mm	678mm +6mm
Bike Length with Tires	1660mm	1670mm +10mm
Crank Length	170mm	165mm -5mm
Handlebar Width	400mm	380mm -20mm
Stem Length	100mm	100mm +0mm
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