Compare: 2026 TanTan Cycling (Seraph) GR257 Base 560 vs 2022 TanTan Cycling (Seraph) GR047 Base M

Insights

Very upright stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of TanTan Cycling (Seraph) GR257

Average stack and reach vs trend of all-road/gravel bikes

Design deviates from other sizes of TanTan Cycling (Seraph) GR047

Stack	580mm	582mm +2mm
Reach	383mm	382mm -1mm
Stack to Reach Ratio	1.51:1	1.52:1
Seat Tube Length, C-T	—	460mm
Seat Tube Length, C-TTT	546mm	—
Top Tube Length, Effective/Horizontal Center	558mm	—
Top Tube Length, Effective/Horizontal HT Top	—	552mm
Top Tube Slope	4deg	—
Head Tube Angle	71deg	71deg +0deg
Seat Tube Angle	73.3deg	—
Effective Seat Tube Angle, ETT Center	—	73.1deg
Head Tube Length	153mm	150mm -3mm
Bottom Bracket Drop	69mm	76mm +7mm
Bottom Bracket Height	292mm	273mm -19mm
Chainstay Length	435mm	430mm -5mm
Chainstay Length Horizontal	429.5mm	423.2mm -6.3mm
Front-Center	621.4mm	614mm -7.4mm
Front-Center Horizontal	617.5mm	609.3mm -8.2mm
Wheelbase	1047mm	1032.5mm -14.5mm
Fork Offset/Rake	55mm	50mm -5mm
Fork Length, Unknown	405mm	—
Trail	66.1mm high	67.3mm +1.2mm high
Mechanical Trail	62.5mm	63.6mm +1.1mm
Wheel Flop	20.4mm	20.7mm +0.3mm
Tire to Pedal Spindle	90.4mm 170 mm cranks	95mm +4.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	122mm 170 mm cranks	103mm -19mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	50mm	38mm -12mm
Tire Width Max	57mm	—
Tire Outer Diameter	722mm	698mm -24mm
Bike Length with Tires	1769mm	1730.5mm -38.5mm
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