2026 Bergamont Grandurance Flat Bar

	S	M	L	XL	XXL
Stack	551mm	570mm	589mm	607mm	626mm
Reach	412mm	422mm	432mm	442mm	452mm
Stack to Reach Ratio	1.34:1	1.35:1	1.36:1	1.37:1	1.38:1
Seat Tube Length, C-T	485mm	510mm	535mm	560mm	585mm
Top Tube Length, Effective/Horizontal HT Top	560mm	575mm	590mm	605mm	620mm
Top Tube Slope	8.7deg	8deg	7.2deg	6.4deg	5.8deg
Head Tube Angle	70deg	70deg	70deg	70deg	70deg
Seat Tube Angle	75deg	75deg	75deg	75deg	75deg
Head Tube Length	110mm	130mm	150mm	170mm	190mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	281mm	281mm	281mm	281mm	281mm
Chainstay Length	435mm	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	429.3mm	429.3mm	429.3mm	429.3mm	429.3mm
Front-Center	644.5mm	661.4mm	678.3mm	694.2mm	711.1mm
Front-Center Horizontal	640.7mm	657.7mm	674.7mm	690.7mm	707.7mm
Wheelbase	1070mm	1087mm	1104mm	1120mm	1137mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm
Fork Length (Axle-To-Crown)	420mm	420mm	420mm	420mm	420mm
Trail	74.5mm high	74.5mm high	74.5mm high	74.5mm high	74.5mm high
Mechanical Trail	70.1mm	70.1mm	70.1mm	70.1mm	70.1mm
Wheel Flop	24mm	24mm	24mm	24mm	24mm
Standover Height	768mm	789mm	811mm	833mm	855mm
Tire to Pedal Spindle	123.5mm 170 mm cranks	140.4mm 170 mm cranks	157.3mm 170 mm cranks	173.2mm 170 mm cranks	190.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Category Trend

Source:https://www.bergamont.com/global/en/product/bergamont-grandurance-fb-10-eq?article=4252301094006

Geometry