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

Insights

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

Design deviates from other sizes of Serk Titanium A40

Very 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	613mm	619mm +6mm
Reach	398mm	407mm +9mm
Stack to Reach Ratio	1.54:1	1.52:1
Seat Tube Length, C-T	—	570mm
Seat Tube Length, Unknown	560mm	—
Top Tube Length, Effective/Horizontal Center	—	590mm
Top Tube Length, Effective/Horizontal Unknown	580mm	—
Top Tube Slope	7.8deg	7.3deg -0.5deg
Head Tube Angle	71.5deg	71.5deg +0deg
Seat Tube Angle	73.5deg	73.5deg +0deg
Head Tube Length	192mm	193mm +1mm
Bottom Bracket Drop	73mm	74mm +1mm
Bottom Bracket Height	278mm	287mm +9mm
Chainstay Length	420mm	427mm +7mm
Chainstay Length Horizontal	413.6mm	420.5mm +6.9mm
Front-Center	632.6mm	647.7mm +15.1mm
Front-Center Horizontal	628.4mm	643.5mm +15.1mm
Wheelbase	1042mm	1064mm +22mm
Fork Offset/Rake	47mm	51mm +4mm
Fork Length (Axle-To-Crown)	—	398mm
Trail	67.9mm high	67mm -0.9mm high
Mechanical Trail	64.4mm	63.6mm -0.8mm
Wheel Flop	20.4mm	20.2mm -0.2mm
Standover Height	831mm	865mm +34mm
Tire to Pedal Spindle	111.6mm 170 mm cranks	116.7mm +5.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	108mm 170 mm cranks	117mm +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	1744mm	1786mm +42mm
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