Compare: 2025 Serk Titanium A40 Base XS vs 2026 Winspace Cycle Co G5 Base XS

Insights

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

Design deviates from other sizes of Serk Titanium A40

Somewhat upright stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of Winspace Cycle Co G5

Bar type unusual for category

This: Aero Bar
Category: Drop Bar

Stack	519mm	531mm +12mm
Reach	366mm	367mm +1mm
Stack to Reach Ratio	1.42:1	1.45:1
Seat Tube Length, C-T	—	440mm
Seat Tube Length, Unknown	435mm	—
Top Tube Length, Effective/Horizontal Center	—	524mm
Top Tube Length, Effective/Horizontal Unknown	505mm	—
Top Tube Slope	11.7deg	12.5deg +0.8deg
Head Tube Angle	71deg	70.5deg -0.5deg
Seat Tube Angle	75deg	73.5deg -1.5deg
Head Tube Length	90mm	100mm +10mm
Bottom Bracket Drop	77mm	78mm +1mm
Bottom Bracket Height	274mm	283mm +9mm
Chainstay Length	420mm	423mm +3mm
Chainstay Length Horizontal	412.9mm	415.8mm +2.9mm
Front-Center	573.3mm	589.4mm +16.1mm
Front-Center Horizontal	568.1mm	584.3mm +16.2mm
Wheelbase	981mm	1000mm +19mm
Fork Offset/Rake	47mm	54mm +7mm
Fork Length (Axle-To-Crown)	—	398mm
Trail	71.2mm high	70.6mm -0.6mm high
Mechanical Trail	67.3mm	66.5mm -0.8mm
Wheel Flop	21.9mm	22.2mm +0.3mm
Standover Height	722mm	751mm +29mm
Tire to Pedal Spindle	52.3mm 170 mm cranks	58.4mm +6.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	104mm 170 mm cranks	113mm +9mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	40mm	50mm +10mm
Tire Width Max	—	58mm
Tire Outer Diameter	702mm	722mm +20mm
Bike Length with Tires	1683mm	1722mm +39mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Aero Bar
Frame Material	Titanium	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Unknown	Disc