2025 Irish Cycles Cumberland Base

	XS	S	M	L
Stack	530mm	565.5mm	595mm	625mm
Reach	361.9mm	371.7mm	383.9mm	395.9mm
Stack to Reach Ratio	1.46:1	1.52:1	1.55:1	1.58:1
Seat Tube Length, C-T	460mm	490mm	520mm	550mm
Top Tube Length, Effective/Horizontal HT Top	529mm	550mm	571.5mm	593mm
Top Tube Slope	10.3deg	10.7deg	10.4deg	10.2deg
Head Tube Angle	69.5deg	71.1deg	72.5deg	72.5deg
Seat Tube Angle	72.5deg	72.5deg	72.5deg	72.5deg
Head Tube Length	114mm	145mm	170.5mm	202mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm
Bottom Bracket Height	286mm	286mm	286mm	286mm
Chainstay Length	428mm	428mm	428mm	428mm
Chainstay Length Horizontal	422.2mm	422.2mm	422.2mm	422.2mm
Front-Center	591.4mm	597.9mm	605.8mm	627.3mm
Front-Center Horizontal	587.3mm	593.8mm	601.8mm	623.4mm
Wheelbase	1009.5mm	1016mm	1024mm	1045.6mm
Fork Offset/Rake	50mm	50mm	50mm	50mm
Fork Length, Unknown	395mm	395mm	395mm	395mm
Trail	79.7mm high	69mm high	59.8mm mid/neutral	59.8mm mid/neutral
Mechanical Trail	74.7mm	65.3mm	57.1mm	57.1mm
Wheel Flop	26.2mm	21.2mm	17.2mm	17.2mm
Tire to Pedal Spindle	65.4mm 170 mm cranks	71.9mm 170 mm cranks	79.8mm 170 mm cranks	101.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks	116mm 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.irishcycles.com/x5x/images/clandgeo.jpg

Geometry