Compare: 2026 mentech arc sport Base 42 vs 2026 XDS X-LAB RT9 Base XS

Insights

Somewhat upright stack and reach vs trend of performance road bikes

Design deviates from other sizes of mentech arc sport

Somewhat upright stack and reach vs trend of performance road bikes

Design deviates from other sizes of XDS X-LAB RT9

Stack	514.3mm	510mm -4.3mm
Reach	357.2mm	362mm +4.8mm
Stack to Reach Ratio	1.44:1	1.41:1
Seat Tube Length, C-T	—	430mm
Seat Tube Length, Unknown	420mm	—
Top Tube Length, Effective/Horizontal Center	495mm	—
Top Tube Length, Effective/Horizontal Unknown	—	498mm
Top Tube Slope	13.1deg	11.3deg -1.8deg
Head Tube Angle	70.8deg	70.5deg -0.3deg
Seat Tube Angle	75deg	75deg +0deg
Head Tube Length	110mm	110mm +0mm
Bottom Bracket Drop	72mm	74mm +2mm
Bottom Bracket Height	271mm	265mm -6mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.6mm	403.3mm -0.3mm
Front-Center	568.7mm	574mm +5.3mm
Front-Center Horizontal	564.2mm	569.2mm +5mm
Wheelbase	967.8mm	972.5mm +4.7mm
Fork Offset/Rake	50mm	49.8mm -0.2mm
Fork Length (On-Axis)	375mm	—
Trail	66.5mm high	67.2mm +0.7mm high
Mechanical Trail	62.8mm	63.4mm +0.6mm
Wheel Flop	20.7mm	21.2mm +0.5mm
Standover Height	724.3mm	704mm -20.3mm
Tire to Pedal Spindle	55.7mm 170 mm cranks	65mm +9.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	101mm 170 mm cranks	95mm -6mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	28mm -4mm
Tire Width Max	35mm	—
Tire Outer Diameter	686mm	678mm -8mm
Bike Length with Tires	1653.8mm	1650.5mm -3.3mm
Suspension Type	Rigid, non-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