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

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	548mm	544mm -4mm
Reach	374mm	375mm +1mm
Stack to Reach Ratio	1.47:1	1.45:1
Seat Tube Length, C-T	—	460mm
Seat Tube Length, Unknown	495mm	—
Top Tube Length, Effective/Horizontal Center	—	536mm
Top Tube Length, Effective/Horizontal Unknown	526mm	—
Top Tube Slope	8deg	11.5deg +3.5deg
Head Tube Angle	71.5deg	70.7deg -0.8deg
Seat Tube Angle	74.5deg	73.5deg -1deg
Head Tube Length	121mm	113mm -8mm
Bottom Bracket Drop	75mm	78mm +3mm
Bottom Bracket Height	276mm	283mm +7mm
Chainstay Length	420mm	423mm +3mm
Chainstay Length Horizontal	413.3mm	415.8mm +2.5mm
Front-Center	586.6mm	600.3mm +13.7mm
Front-Center Horizontal	581.8mm	595.3mm +13.5mm
Wheelbase	995mm	1011mm +16mm
Fork Offset/Rake	47mm	54mm +7mm
Fork Length (Axle-To-Crown)	—	398mm
Trail	67.9mm high	69.2mm +1.3mm high
Mechanical Trail	64.4mm	65.3mm +0.9mm
Wheel Flop	20.4mm	21.6mm +1.2mm
Standover Height	767mm	768mm +1mm
Tire to Pedal Spindle	65.6mm 170 mm cranks	69.3mm +3.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	106mm 170 mm cranks	113mm +7mm 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	1697mm	1733mm +36mm
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