Compare: 2026 Argon 18 Dark Matter 3D High Stack M vs 2026 SPCYCLE G028 Base L

Insights

Average stack and reach vs trend of all-road/gravel bikes

Design deviates from other sizes of Argon 18 Dark Matter

Somewhat upright stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of SPCYCLE G028

Stack	606mm	595mm -11mm
Reach	398mm	405.5mm +7.5mm
Stack to Reach Ratio	1.52:1	1.47:1
Seat Tube Length, C-T	495mm	—
Seat Tube Length, C-TTT	—	520mm
Top Tube Length, Effective/Horizontal HT Top	577mm	—
Top Tube Length, Effective/Horizontal Unknown	—	576mm
Top Tube Slope	13.7deg	7.8deg -5.9deg
Head Tube Angle	71deg	71.2deg +0.2deg
Seat Tube Angle	73.7deg	74deg +0.3deg
Head Tube Length	151mm	157mm +6mm
Bottom Bracket Drop	78mm	80mm +2mm
Bottom Bracket Height	283mm	286mm +3mm
Chainstay Length	436mm	435mm -1mm
Chainstay Length Horizontal	429mm	427.6mm -1.4mm
Front-Center	634.8mm	644mm +9.2mm
Front-Center Horizontal	630mm	638.4mm +8.4mm
Wheelbase	1059mm	1066mm +7mm
Fork Offset/Rake	48mm	55mm +7mm
Fork Length (Axle-To-Crown)	425mm	—
Fork Length, Unknown	—	405mm
Trail	73.5mm high	66.5mm -7mm high
Mechanical Trail	69.5mm	63mm -6.5mm
Wheel Flop	22.6mm	20.3mm -2.3mm
Standover Height	786mm	—
Tire to Pedal Spindle	103.8mm 170 mm cranks	108mm +4.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	113mm 170 mm cranks	116mm +3mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	50mm	55mm +5mm
Tire Width Max	57mm	—
Tire Outer Diameter	722mm	732mm +10mm
Bike Length with Tires	1781mm	1798mm +17mm
Suspension Type	Rigid, suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc