Compare: 2022 TanTan Cycling (Seraph) FM202 Base L vs 2026 Specialized Bicycles Aethos 2 58

Insights

Average stack and reach vs trend of endurance road bikes

Design deviates from other sizes of TanTan Cycling (Seraph) FM202

Somewhat upright stack and reach vs trend of performance road bikes

Design deviates from other sizes of Specialized Bicycles Aethos

Stack	599mm	606mm +7mm
Reach	395.5mm	398mm +2.5mm
Stack to Reach Ratio	1.51:1	1.52:1
Seat Tube Length, C-T	544mm	—
Seat Tube Length, Unknown	—	535mm
Top Tube Length, Effective/Horizontal Center	556mm	572mm +16mm
Top Tube Slope	7.9deg	9.6deg +1.7deg
Head Tube Angle	73.5deg	73deg -0.5deg
Seat Tube Angle	74deg	74deg +0deg
Head Tube Length	184mm	198mm +14mm
Bottom Bracket Drop	77mm	73.5mm -3.5mm
Bottom Bracket Height	259mm	265.5mm +6.5mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	402.7mm	403.4mm +0.7mm
Front-Center	601mm	614mm +13mm
Front-Center Horizontal	595.8mm	609.6mm +13.8mm
Wheelbase	998.5mm	1013mm +14.5mm
Fork Offset/Rake	45mm	47mm +2mm
Fork Length, Unknown	—	372mm
Trail	52.6mm mid/neutral	54.5mm +1.9mm mid/neutral
Mechanical Trail	50.4mm	52.1mm +1.7mm
Wheel Flop	14.3mm	15.2mm +0.9mm
Standover Height	—	805mm
Tire to Pedal Spindle	95mm 170 mm cranks	100mm +5mm 175 mm cranks
Pedal Spindle to Ground Clearance	89mm 170 mm cranks	90.5mm +1.5mm 175 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	25mm	28mm +3mm
Tire Width Max	27mm	—
Tire Outer Diameter	672mm	678mm +6mm
Bike Length with Tires	1670.5mm	1691mm +20.5mm
Crank Length	—	175mm
Handlebar Width	—	420mm
Stem Length	—	110mm
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