2025 Argon 18 Dark Matter Grx

	XXS	XS	S	M	L	XL
Stack	520mm	540mm	561mm	582mm	603mm	629mm
Reach	370mm	382mm	394mm	406mm	418mm	430mm
Stack to Reach Ratio	1.41:1	1.41:1	1.42:1	1.43:1	1.44:1	1.46:1
Seat Tube Length, Unknown	420mm	435mm	460mm	495mm	540mm	585mm
Top Tube Length, Effective/Horizontal Unknown	507mm	530mm	553mm	577mm	602mm	629mm
Top Tube Slope	13.4deg	13.6deg	12.8deg	11.1deg	8.5deg	6.7deg
Head Tube Angle	68.5deg	70deg	70.5deg	71deg	71deg	71deg
Seat Tube Angle	75.5deg	74.9deg	74.3deg	73.7deg	73.1deg	72.5deg
Head Tube Length	72mm	87mm	106mm	126mm	151mm	178mm
Bottom Bracket Drop	80mm	80mm	78mm	78mm	76mm	76mm
Bottom Bracket Height	281mm	281mm	283mm	283mm	285mm	285mm
Chainstay Length	436mm	436mm	436mm	436mm	436mm	436mm
Chainstay Length Horizontal	428.6mm	428.6mm	429mm	429mm	429.3mm	429.3mm
Front-Center	606.7mm	612.7mm	621mm	634.8mm	655.1mm	676mm
Front-Center Horizontal	601.4mm	607.4mm	616mm	630mm	650.7mm	671.7mm
Wheelbase	1030mm	1036mm	1045mm	1059mm	1080mm	1101mm
Fork Offset/Rake	54mm	54mm	48mm	48mm	48mm	48mm
Fork Length, Unknown	4250mm	4250mm	4250mm	4250mm	4250mm	4250mm
Trail	84.2mm very high	73.9mm high	76.9mm high	73.5mm high	73.5mm high	73.5mm high
Mechanical Trail	78.3mm	69.5mm	72.5mm	69.5mm	69.5mm	69.5mm
Wheel Flop	28.7mm	23.8mm	24.2mm	22.6mm	22.6mm	22.6mm
Standover Height	713mm	729mm	755mm	786mm	825mm	863mm
Tire to Pedal Spindle	85.7mm 160 mm cranks	86.7mm 165 mm cranks	90mm 170 mm cranks	103.8mm 170 mm cranks	121.6mm 172.5 mm cranks	142.5mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	121mm 160 mm cranks	116mm 165 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	112.5mm 172.5 mm cranks	112.5mm 172.5 mm cranks

	XXS	XS	S	M	L	XL
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	50mm	50mm	50mm	50mm	50mm	50mm
Tire Width Max	57mm	57mm	57mm	57mm	57mm	57mm
Tire Outer Diameter	722mm	722mm	722mm	722mm	722mm	722mm
Bike Length with Tires	1752mm	1758mm	1767mm	1781mm	1802mm	1823mm
Crank Length	160mm	165mm	170mm	170mm	172.5mm	172.5mm
Handlebar Width	42cm	42cm	42cm	42cm	42cm	42cm
Stem Length	60mm	70mm	80mm	90mm	100mm	110mm

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.argon18.com/en-ca/bikes/gravel/dark-matter/shimano-grx

Geometry