Compare: 2021 TWITTER Bikes R10 Disc Base XXS-43,5 vs 2027 Specialized Bicycles Tarmac SL9 S-Works 44

Insights

Somewhat upright stack and reach vs trend of performance road bikes

Design deviates from other sizes of TWITTER Bikes R10 Disc

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Specialized Bicycles Tarmac SL9

Stack	502mm	501mm -1mm
Reach	356mm	366mm +10mm
Stack to Reach Ratio	1.41:1	1.37:1
Seat Tube Length, C-T	435mm	—
Seat Tube Length, C-TTT	—	433mm
Top Tube Length, Effective/Horizontal Center	490mm	496mm +6mm
Top Tube Slope	9.9deg	7.4deg -2.5deg
Head Tube Angle	70.5deg	70.5deg +0deg
Seat Tube Angle	75deg	75.5deg +0.5deg
Head Tube Length	100mm	99.6mm -0.4mm
Bottom Bracket Drop	72mm	74mm +2mm
Bottom Bracket Height	264mm	269mm +5mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.6mm	403.3mm -0.3mm
Front-Center	571mm	572mm +1mm
Front-Center Horizontal	566.4mm	566.7mm +0.3mm
Wheelbase	970.1mm	970mm -0.1mm
Fork Offset/Rake	54.8mm	47mm -7.8mm
Fork Length (Axle-To-Crown)	—	369mm
Trail	60.8mm mid/neutral	71.6mm +10.8mm high
Mechanical Trail	57.3mm	67.5mm +10.2mm
Wheel Flop	19.1mm	22.5mm +3.4mm
Standover Height	—	722mm
Tire to Pedal Spindle	65mm 170 mm cranks	64mm -1mm 165 mm cranks
Pedal Spindle to Ground Clearance	94mm 170 mm cranks	104mm +10mm 165 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	25mm	32mm +7mm
Tire Outer Diameter	672mm	686mm +14mm
Bike Length with Tires	1642.1mm	1656mm +13.9mm
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