Compare: 2027 Specialized Bicycles Tarmac SL9 S-Works 52 vs 2023 BXT BX-Road-145 Pro-145 52

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	527mm	530.8mm +3.8mm
Reach	380mm	383.8mm +3.8mm
Stack to Reach Ratio	1.39:1	1.38:1
Seat Tube Length, C-T	—	485mm
Seat Tube Length, C-TTT	456mm	—
Top Tube Length, Effective/Horizontal Center	531mm	534mm +3mm
Top Tube Slope	7.7deg	7.1deg -0.6deg
Head Tube Angle	72.5deg	72.8deg +0.3deg
Seat Tube Angle	74deg	74.2deg +0.2deg
Head Tube Length	119.8mm	121mm +1.2mm
Bottom Bracket Drop	74mm	70mm -4mm
Bottom Bracket Height	269mm	269mm +0mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.3mm	404mm +0.7mm
Front-Center	577mm	577.8mm +0.8mm
Front-Center Horizontal	571.7mm	573.5mm +1.8mm
Wheelbase	975mm	977.5mm +2.5mm
Fork Offset/Rake	47mm	45mm -2mm
Fork Length (Axle-To-Crown)	369mm	375mm +6mm
Trail	58.9mm mid/neutral	57.8mm -1.1mm mid/neutral
Mechanical Trail	56.1mm	55.3mm -0.8mm
Wheel Flop	16.9mm	16.3mm -0.6mm
Standover Height	745mm	—
Tire to Pedal Spindle	64mm 170 mm cranks	68.8mm +4.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	99mm +0mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	28mm -4mm
Tire Width Max	—	32mm
Tire Outer Diameter	686mm	678mm -8mm
Bike Length with Tires	1661mm	1655.5mm -5.5mm
Crank Length	170mm	—
Handlebar Width	420mm	—
Stem Length	90mm	—
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