Compare: 2024 TanTan Cycling (Seraph) Gr209 Base 52 vs 2026 XMCS Aero Gravel Base M

Insights

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

Average stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of XMCS Aero Gravel

Stack	542mm	568mm +26mm
Reach	396mm	395mm -1mm
Stack to Reach Ratio	1.37:1	1.44:1
Seat Tube Length, C-T	520mm	—
Seat Tube Length, Unknown	—	490mm
Top Tube Length, Effective/Horizontal Center	555mm	—
Top Tube Length, Effective/Horizontal Unknown	—	558mm
Top Tube Slope	4.5deg	10.4deg +5.9deg
Head Tube Angle	71.6deg	71.2deg -0.4deg
Seat Tube Angle	73.7deg	74deg +0.3deg
Head Tube Length	105mm	135mm +30mm
Bottom Bracket Drop	78mm	80mm +2mm
Bottom Bracket Height	268mm	288mm +20mm
Chainstay Length	435mm	425mm -10mm
Chainstay Length Horizontal	428mm	417.4mm -10.6mm
Front-Center	609mm	623mm +14mm
Front-Center Horizontal	604.1mm	619.6mm +15.5mm
Wheelbase	1032mm	1037mm +5mm
Fork Offset/Rake	50mm	55mm +5mm
Fork Length, Unknown	400mm	400mm +0mm
Trail	62.4mm mid/neutral	67.2mm +4.8mm high
Mechanical Trail	59.2mm	63.6mm +4.4mm
Wheel Flop	18.7mm	20.5mm +1.8mm
Tire to Pedal Spindle	93mm 170 mm cranks	85mm -8mm 170 mm cranks
Pedal Spindle to Ground Clearance	98mm 170 mm cranks	118mm +20mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	35mm	57mm +22mm
Tire Outer Diameter	692mm	736mm +44mm
Bike Length with Tires	1724mm	1773mm +49mm
Suspension Type	Rigid, 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	http://www.tantancycling.com/index.php?_m=mod_product&_a=view&p_id=1139	https://chinertown.com/index.php/topic,6967.75.html
Brand	TanTan Cycling (Seraph)	XMCS
Bike	2024 Gr209 Base	2026 Aero Gravel Base
Size	52	M
Category	All-road/Gravel	Progressive Gravel