Compare: 2024 Bigrock Aero Base 46 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 Bigrock Aero

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Specialized Bicycles Tarmac SL9

Stack	507.3mm	501mm -6.3mm
Reach	369mm	366mm -3mm
Stack to Reach Ratio	1.37:1	1.37:1
Seat Tube Length, C-TTT	430mm	433mm +3mm
Top Tube Length, Effective/Horizontal Center	—	496mm
Top Tube Length, Effective/Horizontal HT Top	510.6mm	—
Top Tube Slope	8.6deg	7.4deg -1.2deg
Head Tube Angle	70.5deg	70.5deg +0deg
Seat Tube Angle	74.4deg	75.5deg +1.1deg
Head Tube Length	104mm	99.6mm -4.4mm
Bottom Bracket Drop	72mm	74mm +2mm
Bottom Bracket Height	267mm	269mm +2mm
Chainstay Length	406mm	410mm +4mm
Chainstay Length Horizontal	399.6mm	403.3mm +3.7mm
Front-Center	573.3mm	572mm -1.3mm
Front-Center Horizontal	568.8mm	566.7mm -2.1mm
Wheelbase	968.3mm	970mm +1.7mm
Fork Offset/Rake	43mm	47mm +4mm
Fork Length (Axle-To-Crown)	—	369mm
Fork Length, Unknown	373mm	—
Trail	74.4mm high	71.6mm -2.8mm high
Mechanical Trail	70.2mm	67.5mm -2.7mm
Wheel Flop	23.4mm	22.5mm -0.9mm
Standover Height	—	722mm
Tire to Pedal Spindle	64.3mm 170 mm cranks	64mm -0.3mm 165 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	104mm +7mm 165 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	32mm +4mm
Tire Width Max	30mm	—
Tire Outer Diameter	678mm	686mm +8mm
Bike Length with Tires	1646.3mm	1656mm +9.7mm
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