Compare: 2027 Specialized Bicycles Tarmac SL9 S-Works 54 vs 2023 Onirii ONE Base 54

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Specialized Bicycles Tarmac SL9

Somewhat aggressive stack and reach vs trend of endurance road bikes

Stack	544mm	546mm +2mm
Reach	384mm	384mm +0mm
Stack to Reach Ratio	1.42:1	1.42:1
Seat Tube Length, C-T	—	480mm
Seat Tube Length, C-TTT	473mm	—
Top Tube Length, Effective/Horizontal Center	540mm	540mm +0mm
Top Tube Slope	7.7deg	9.3deg +1.6deg
Head Tube Angle	72.5deg	73deg +0.5deg
Seat Tube Angle	74deg	74deg +0deg
Head Tube Length	139.7mm	137mm -2.7mm
Bottom Bracket Drop	72mm	74mm +2mm
Bottom Bracket Height	271mm	265mm -6mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.6mm	403.3mm -0.3mm
Front-Center	587mm	584mm -3mm
Front-Center Horizontal	582.4mm	579.3mm -3.1mm
Wheelbase	986mm	982.6mm -3.4mm
Fork Offset/Rake	47mm	47mm +0mm
Fork Length (Axle-To-Crown)	369mm	—
Fork Length, Unknown	—	370mm
Trail	58.9mm mid/neutral	54.5mm -4.4mm mid/neutral
Mechanical Trail	56.1mm	52.1mm -4mm
Wheel Flop	16.9mm	15.2mm -1.7mm
Standover Height	767mm	—
Tire to Pedal Spindle	71.5mm 172.5 mm cranks	75mm +3.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	98.5mm 172.5 mm cranks	95mm -3.5mm 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	1672mm	1660.6mm -11.4mm
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	Unknown