2023 BMC Switzerland Roadmachine X AL MD

	XS	S	M	L	XL
Stack	525mm	550mm	580mm	610mm	640mm
Reach	390mm	400mm	410mm	420mm	430mm
Stack to Reach Ratio	1.35:1	1.38:1	1.41:1	1.45:1	1.49:1
Seat Tube Length, C-T	430mm	445mm	475mm	505mm	540mm
Seat Tube Length, Unknown	350mm	350mm	350mm	350mm	350mm
Top Tube Length, Effective/Horizontal Unknown	540mm	558mm	576mm	595mm	614mm
Top Tube Slope	12.4deg	13.2deg	12.9deg	12.6deg	11.8deg
Head Tube Angle	70deg	70deg	70deg	70deg	70deg
Seat Tube Angle	74deg	74deg	74deg	74deg	74deg
Head Tube Length	92mm	118mm	150mm	182mm	214mm
Bottom Bracket Drop	125mm	125mm	125mm	125mm	125mm
Bottom Bracket Height	231mm	231mm	231mm	231mm	231mm
Chainstay Length	430mm	430mm	430mm	430mm	430mm
Chainstay Length Horizontal	411.4mm	411.4mm	411.4mm	411.4mm	411.4mm
Front-Center	608mm	1047mm	647mm	668mm	689mm
Front-Center Horizontal	616.6mm	635.6mm	656.6mm	677.6mm	698.6mm
Wheelbase	1028mm	1047mm	1068mm	1089mm	1110mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	410mm	410mm	410mm	410mm	410mm
Trail	81.7mm very high	81.7mm very high	81.7mm very high	81.7mm very high	81.7mm very high
Mechanical Trail	76.8mm	76.8mm	76.8mm	76.8mm	76.8mm
Wheel Flop	26.3mm	26.3mm	26.3mm	26.3mm	26.3mm
Standover Height	720mm	738mm	768mm	797mm	830mm
Tire to Pedal Spindle	82mm 170 mm cranks	521mm 170 mm cranks	118.5mm 172.5 mm cranks	139.5mm 172.5 mm cranks	158mm 175 mm cranks
Pedal Spindle to Ground Clearance	61mm 170 mm cranks	61mm 170 mm cranks	58.5mm 172.5 mm cranks	58.5mm 172.5 mm cranks	56mm 175 mm cranks

Published Sizing Recommendations

Height

13 ft 9 in

13 ft 6 in

14 ft 2 in

15 ft 0 in

15 ft 10 in

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.bmc-switzerland.com/eu_en/bmc-roadmachine-x-al-one-22.html