Compare: 2025 SPCYCLE SP-R066 Base XS vs 2027 Specialized Bicycles Tarmac SL9 S-Works 44

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of SPCYCLE SP-R066

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Specialized Bicycles Tarmac SL9

Stack	507mm	501mm -6mm
Reach	365mm	366mm +1mm
Stack to Reach Ratio	1.39:1	1.37:1
Seat Tube Length, C-T	450mm	—
Seat Tube Length, C-TTT	—	433mm
Top Tube Length, Effective/Horizontal Center	—	496mm
Top Tube Length, Effective/Horizontal HT Top	501mm	—
Top Tube Slope	8.5deg	7.4deg -1.1deg
Head Tube Angle	70.5deg	70.5deg +0deg
Seat Tube Angle	75deg	75.5deg +0.5deg
Head Tube Length	105mm	99.6mm -5.4mm
Bottom Bracket Drop	72mm	74mm +2mm
Bottom Bracket Height	271mm	269mm -2mm
Chainstay Length	408mm	410mm +2mm
Chainstay Length Horizontal	401.6mm	403.3mm +1.7mm
Front-Center	571mm	572mm +1mm
Front-Center Horizontal	566.4mm	566.7mm +0.3mm
Wheelbase	968mm	970mm +2mm
Fork Offset/Rake	45mm	47mm +2mm
Fork Length (Axle-To-Crown)	—	369mm
Fork Length, Unknown	371mm	—
Trail	73.7mm high	71.6mm -2.1mm high
Mechanical Trail	69.5mm	67.5mm -2mm
Wheel Flop	23.2mm	22.5mm -0.7mm
Standover Height	740mm	722mm -18mm
Tire to Pedal Spindle	58mm 170 mm cranks	64mm +6mm 165 mm cranks
Pedal Spindle to Ground Clearance	101mm 170 mm cranks	104mm +3mm 165 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	32mm +0mm
Tire Width Max	32mm	—
Tire Outer Diameter	686mm	686mm +0mm
Bike Length with Tires	1654mm	1656mm +2mm
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