2025 Kinesis Bikes 4S Disc Base

	*S (51)**	M (54)	L (57)	XL (60)
Stack	538mm	557mm	582mm	612mm
Reach	378mm	385mm	394mm	404mm
Stack to Reach Ratio	1.42:1	1.45:1	1.48:1	1.51:1
Seat Tube Length, C-T	490mm	540mm	570mm	600mm
Top Tube Length, Actual C-C	532mm	545mm	561mm	580mm
Top Tube Slope	7.4deg	4.1deg	3.5deg	3.5deg
Head Tube Angle	71deg	72deg	72deg	72deg
Seat Tube Angle	74deg	74deg	74deg	74deg
Head Tube Length	130mm	146mm	172mm	204mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm
Bottom Bracket Height	273mm	273mm	273mm	273mm
Chainstay Length	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	414.1mm	414.1mm	414.1mm	414.1mm
Front-Center	590.7mm	595mm	611.8mm	631.8mm
Front-Center Horizontal	586.9mm	590.9mm	607.9mm	627.9mm
Wheelbase	1001mm	1005mm	1022mm	1042mm
Fork Offset/Rake	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	378mm	378mm	378mm	378mm
Trail	70.5mm high	64.1mm mid/neutral	64.1mm mid/neutral	64.1mm mid/neutral
Mechanical Trail	66.7mm	61mm	61mm	61mm
Wheel Flop	21.7mm	18.9mm	18.9mm	18.9mm
Tire to Pedal Spindle	77.7mm 170 mm cranks	82mm 170 mm cranks	98.8mm 170 mm cranks	118.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	103mm 170 mm cranks	103mm 170 mm cranks	103mm 170 mm cranks	103mm 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://kinesisbikes.co.uk/products/kinesis-frameset-4s-graphite-grey?variant=53957030936902

Geometry