Compare: 2027 Specialized Bicycles Tarmac SL9 S-Works 54 vs 2026 XMCS Aero Racing Base M

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Specialized Bicycles Tarmac SL9

Average stack and reach vs trend of performance road bikes

Stack	544mm	543mm -1mm
Reach	384mm	384mm +0mm
Stack to Reach Ratio	1.42:1	1.41:1
Seat Tube Length, C-TTT	473mm	—
Seat Tube Length, Unknown	—	488mm
Top Tube Length, Effective/Horizontal Center	540mm	540mm +0mm
Top Tube Slope	7.7deg	8.1deg +0.4deg
Head Tube Angle	72.5deg	73deg +0.5deg
Seat Tube Angle	74deg	74deg +0deg
Head Tube Length	139.7mm	132mm -7.7mm
Bottom Bracket Drop	72mm	72mm +0mm
Bottom Bracket Height	271mm	274mm +3mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.6mm	403.6mm +0mm
Front-Center	587mm	582mm -5mm
Front-Center Horizontal	582.4mm	577.4mm -5mm
Wheelbase	986mm	981mm -5mm
Fork Offset/Rake	47mm	44mm -3mm
Fork Length (On-Axis)	—	375mm
Fork Length (Axle-To-Crown)	369mm	—
Trail	58.9mm mid/neutral	59.8mm +0.9mm mid/neutral
Mechanical Trail	56.1mm	57.2mm +1.1mm
Wheel Flop	16.9mm	16.7mm -0.2mm
Standover Height	767mm	763mm -4mm
Tire to Pedal Spindle	71.5mm 172.5 mm cranks	66mm -5.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	98.5mm 172.5 mm cranks	104mm +5.5mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	35mm +3mm
Tire Width Max	—	35mm
Tire Outer Diameter	686mm	692mm +6mm
Bike Length with Tires	1672mm	1673mm +1mm
Crank Length	172.5mm	—
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	Disc	Disc