Compare: 2023 TanTan Cycling (Seraph) TT-X38 Base 54 vs 2026 Merida Bikes Reacto 8000 S

Insights

Average stack and reach vs trend of performance road bikes

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

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of Merida Bikes Reacto

Stack	554mm	542mm -12mm
Reach	388mm	390mm +2mm
Stack to Reach Ratio	1.43:1	1.39:1
Seat Tube Length, C-T	540mm	520mm -20mm
Top Tube Length, Effective/Horizontal Center	551mm	—
Top Tube Length, Effective/Horizontal HT Top	—	545mm
Top Tube Slope	3.8deg	4.5deg +0.7deg
Head Tube Angle	72.5deg	72.5deg +0deg
Seat Tube Angle	73.6deg	74deg +0.4deg
Head Tube Length	150mm	128mm -22mm
Bottom Bracket Drop	70mm	66mm -4mm
Bottom Bracket Height	269mm	273mm +4mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	404mm	404.7mm +0.7mm
Front-Center	592mm	591mm -1mm
Front-Center Horizontal	587.9mm	587.4mm -0.5mm
Wheelbase	991.8mm	992mm +0.2mm
Fork Offset/Rake	45mm	45mm +0mm
Fork Length, Unknown	—	385mm
Trail	59.7mm mid/neutral	59.7mm +0mm mid/neutral
Mechanical Trail	56.9mm	56.9mm +0mm
Wheel Flop	17.1mm	17.1mm +0mm
Standover Height	—	792mm
Tire to Pedal Spindle	83mm 170 mm cranks	82mm -1mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	103mm +4mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm +0mm
Tire Outer Diameter	678mm	678mm +0mm
Bike Length with Tires	1669.8mm	1670mm +0.2mm
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

Actions	Collection I've Ridden	Collection I've Ridden
Source	N/A	https://www.merida-bikes.com/en-gb/bike/5930/reacto-8000
Brand	TanTan Cycling (Seraph)	Merida Bikes
Bike	2023 TT-X38 Base	2026 Reacto 8000
Size	54	S
Category	Performance Road	Performance Road