Compare: 2027 Specialized Bicycles Tarmac SL9 S-Works 44 vs 2026 XDS X-LAB RT9 Base XS

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Specialized Bicycles Tarmac SL9

Somewhat upright stack and reach vs trend of performance road bikes

Design deviates from other sizes of XDS X-LAB RT9

Stack	501mm	510mm +9mm
Reach	366mm	362mm -4mm
Stack to Reach Ratio	1.37:1	1.41:1
Seat Tube Length, C-T	—	430mm
Seat Tube Length, C-TTT	433mm	—
Top Tube Length, Effective/Horizontal Center	496mm	—
Top Tube Length, Effective/Horizontal Unknown	—	498mm
Top Tube Slope	7.4deg	11.3deg +3.9deg
Head Tube Angle	70.5deg	70.5deg +0deg
Seat Tube Angle	75.5deg	75deg -0.5deg
Head Tube Length	99.6mm	110mm +10.4mm
Bottom Bracket Drop	74mm	74mm +0mm
Bottom Bracket Height	269mm	265mm -4mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.3mm	403.3mm +0mm
Front-Center	572mm	574mm +2mm
Front-Center Horizontal	566.7mm	569.2mm +2.5mm
Wheelbase	970mm	972.5mm +2.5mm
Fork Offset/Rake	47mm	49.8mm +2.8mm
Fork Length (Axle-To-Crown)	369mm	—
Trail	71.6mm high	67.2mm -4.4mm high
Mechanical Trail	67.5mm	63.4mm -4.1mm
Wheel Flop	22.5mm	21.2mm -1.3mm
Standover Height	722mm	704mm -18mm
Tire to Pedal Spindle	64mm 165 mm cranks	65mm +1mm 170 mm cranks
Pedal Spindle to Ground Clearance	104mm 165 mm cranks	95mm -9mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	28mm -4mm
Tire Outer Diameter	686mm	678mm -8mm
Bike Length with Tires	1656mm	1650.5mm -5.5mm
Crank Length	165mm	—
Handlebar Width	380mm	—
Stem Length	70mm	—
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