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

Insights

Somewhat aggressive 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	627mm	614mm -13mm
Reach	410mm	416mm +6mm
Stack to Reach Ratio	1.53:1	1.48:1
Seat Tube Length, C-T	540mm	—
Seat Tube Length, C-TTT	—	550mm
Top Tube Length, Effective/Horizontal HT Top	602mm	—
Top Tube Length, Effective/Horizontal Unknown	—	592mm
Top Tube Slope	11deg	6.6deg -4.4deg
Head Tube Angle	71deg	71.2deg +0.2deg
Seat Tube Angle	73.1deg	74deg +0.9deg
Head Tube Length	176mm	177mm +1mm
Bottom Bracket Drop	76mm	80mm +4mm
Bottom Bracket Height	285mm	286mm +1mm
Chainstay Length	436mm	435mm -1mm
Chainstay Length Horizontal	429.3mm	427.6mm -1.7mm
Front-Center	655.1mm	661mm +5.9mm
Front-Center Horizontal	650.7mm	655.9mm +5.2mm
Wheelbase	1080mm	1083.5mm +3.5mm
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	825mm	—
Tire to Pedal Spindle	124.1mm 170 mm cranks	125mm +0.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	115mm 170 mm cranks	116mm +1mm 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	1802mm	1815.5mm +13.5mm
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