Compare: 2024 Serk Titanium A30M Frameset XS vs 2026 HYGGE S-Aura Base XS

Insights

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

Design deviates from other sizes of Serk Titanium A30M

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of HYGGE S-Aura

Stack	506mm	512.9mm +6.9mm
Reach	366mm	372.8mm +6.8mm
Stack to Reach Ratio	1.38:1	1.38:1
Seat Tube Length, C-T	470mm	460mm -10mm
Top Tube Length, Effective/Horizontal Center	—	516mm
Top Tube Length, Effective/Horizontal HT Top	506mm	—
Top Tube Slope	6.2deg	8deg +1.8deg
Head Tube Angle	70.5deg	70.5deg +0deg
Seat Tube Angle	74.5deg	74.4deg -0.1deg
Head Tube Length	93mm	110mm +17mm
Bottom Bracket Drop	73mm	72mm -1mm
Bottom Bracket Height	266mm	271mm +5mm
Chainstay Length	420mm	410mm -10mm
Chainstay Length Horizontal	413.6mm	403.6mm -10mm
Front-Center	577mm	579.1mm +2.1mm
Front-Center Horizontal	572.4mm	574.6mm +2.2mm
Wheelbase	986mm	978.2mm -7.8mm
Fork Offset/Rake	50mm	43mm -7mm
Fork Length (Axle-To-Crown)	—	373mm
Trail	67mm high	75.9mm +8.9mm high
Mechanical Trail	63.2mm	71.5mm +8.3mm
Wheel Flop	21.1mm	23.9mm +2.8mm
Tire to Pedal Spindle	68mm 170 mm cranks	66.1mm -1.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	96mm 170 mm cranks	101mm +5mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	32mm +4mm
Tire Outer Diameter	678mm	686mm +8mm
Bike Length with Tires	1664mm	1664.2mm +0.2mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Titanium	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	https://www.serk.cc/a30m/	https://www.hyggecycle.com/products/model-s-aura-2026-uci-approved-frameset-hand-painted-landscape
Brand	Serk Titanium	HYGGE
Bike	2024 A30M Frameset	2026 S-Aura Base
Size	XS	XS
Category	All-road/Gravel	Performance Road