2026 Boardman Bikes ADV 8.9

	S	M	L	XL
Stack	559mm	578mm	599mm	613mm
Reach	376mm	385mm	393mm	399mm
Stack to Reach Ratio	1.49:1	1.5:1	1.52:1	1.54:1
Seat Tube Length, C-T	515mm	530mm	555mm	575mm
Top Tube Length, Effective/Horizontal HT Top	535mm	555mm	575mm	585mm
Top Tube Slope	7deg	7.4deg	7deg	6.4deg
Head Tube Angle	71deg	71deg	71.5deg	71.5deg
Seat Tube Angle	74deg	73.5deg	73deg	73deg
Head Tube Length	130mm	150mm	170mm	185mm
Bottom Bracket Drop	73mm	73mm	73mm	73mm
Bottom Bracket Height	278mm	278mm	278mm	278mm
Chainstay Length	430mm	430mm	430mm	430mm
Chainstay Length Horizontal	423.8mm	423.8mm	423.8mm	423.8mm
Front-Center	600.7mm	616.1mm	626mm	636.6mm
Front-Center Horizontal	596.2mm	611.8mm	621.7mm	632.4mm
Wheelbase	1020mm	1035.5mm	1045.5mm	1056.2mm
Fork Offset/Rake	50mm	50mm	50mm	50mm
Fork Length (Axle-To-Crown)	400mm	400mm	400mm	400mm
Trail	68mm high	68mm high	64.7mm mid/neutral	64.7mm mid/neutral
Mechanical Trail	64.3mm	64.3mm	61.4mm	61.4mm
Wheel Flop	20.9mm	20.9mm	19.5mm	19.5mm
Tire to Pedal Spindle	79.7mm 170 mm cranks	95.1mm 170 mm cranks	105mm 170 mm cranks	115.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	108mm 170 mm cranks	108mm 170 mm cranks	108mm 170 mm cranks	108mm 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.boardmanbikes.com/cm_en/products/2403-adv-8.9.html

Geometry