Compare: 2023 TanTan Cycling (Seraph) TT-X38 Base 56 vs 2026 Giant Bicycles Propel Advanced Pro ML

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of TanTan Cycling (Seraph) TT-X38

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Giant Bicycles Propel Advanced

Stack	575mm	562mm -13mm
Reach	394mm	393mm -1mm
Stack to Reach Ratio	1.46:1	1.43:1
Seat Tube Length, C-T	560mm	545mm -15mm
Top Tube Length, Effective/Horizontal Center	566mm	—
Top Tube Length, Effective/Horizontal Unknown	—	565mm
Top Tube Slope	4deg	4.2deg +0.2deg
Head Tube Angle	73deg	73deg +0deg
Seat Tube Angle	73.3deg	73deg -0.3deg
Head Tube Length	170mm	165mm -5mm
Bottom Bracket Drop	70mm	67mm -3mm
Bottom Bracket Height	269mm	272mm +3mm
Chainstay Length	410mm	405mm -5mm
Chainstay Length Horizontal	404mm	399.4mm -4.6mm
Front-Center	600mm	595.4mm -4.6mm
Front-Center Horizontal	595.9mm	591.6mm -4.3mm
Wheelbase	999.9mm	991mm -8.9mm
Fork Offset/Rake	45mm	45mm +0mm
Trail	56.6mm mid/neutral	56.6mm +0mm mid/neutral
Mechanical Trail	54.1mm	54.1mm +0mm
Wheel Flop	15.8mm	15.8mm +0mm
Standover Height	—	794mm
Tire to Pedal Spindle	91mm 170 mm cranks	83.9mm -7.1mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	99.5mm +0.5mm 172.5 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm +0mm
Tire Width Max	32mm	—
Tire Outer Diameter	678mm	678mm +0mm
Bike Length with Tires	1677.9mm	1669mm -8.9mm
Crank Length	—	172.5mm
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