2026 BMC Switzerland Roadmachine 01 Base

	47	51	54	56	58	61
Stack	525mm	550mm	570mm	595mm	620mm	645mm
Reach	370mm	379mm	383mm	388mm	393mm	398mm
Stack to Reach Ratio	1.42:1	1.45:1	1.49:1	1.53:1	1.58:1	1.62:1
Seat Tube Length, C-T	414mm	461mm	488mm	508mm	529mm	550mm
Top Tube Length, Actual C-C	520mm	537mm	546mm	559mm	571mm	581mm
Top Tube Slope	14.7deg	11.9deg	11deg	11.4deg	11.7deg	11.9deg
Head Tube Angle	71.4deg	71.4deg	72.2deg	72.2deg	72.2deg	72.2deg
Seat Tube Angle	74.2deg	74.2deg	74.2deg	74.2deg	74.2deg	74.2deg
Head Tube Length	112mm	138mm	154mm	181mm	207mm	233mm
Bottom Bracket Drop	75mm	75mm	75mm	75mm	75mm	75mm
Bottom Bracket Height	268mm	268mm	268mm	268mm	268mm	268mm
Chainstay Length	415mm	415mm	415mm	415mm	415mm	415mm
Chainstay Length Horizontal	408.2mm	408.2mm	408.2mm	408.2mm	408.2mm	408.2mm
Front-Center	579mm	596mm	594mm	607mm	620mm	633mm
Front-Center Horizontal	573.8mm	591.8mm	588.8mm	601.8mm	614.8mm	627.8mm
Wheelbase	982mm	1000mm	997mm	1010mm	1023mm	1036mm
Fork Offset/Rake	50mm	50mm	45mm	45mm	45mm	45mm
Fork Length (On-Axis)	379mm	379mm	379mm	379mm	379mm	379mm
Trail	62.7mm mid/neutral	62.7mm mid/neutral	62.9mm mid/neutral	62.9mm mid/neutral	62.9mm mid/neutral	62.9mm mid/neutral
Mechanical Trail	59.4mm	59.4mm	59.9mm	59.9mm	59.9mm	59.9mm
Wheel Flop	19mm	19mm	18.3mm	18.3mm	18.3mm	18.3mm
Standover Height	726mm	762mm	786mm	807mm	828mm	849mm
Tire to Pedal Spindle	66mm 170 mm cranks	83mm 170 mm cranks	78.5mm 172.5 mm cranks	91.5mm 172.5 mm cranks	102mm 175 mm cranks	115mm 175 mm cranks
Pedal Spindle to Ground Clearance	98mm 170 mm cranks	98mm 170 mm cranks	95.5mm 172.5 mm cranks	95.5mm 172.5 mm cranks	93mm 175 mm cranks	93mm 175 mm cranks

	47	51	54	56	58	61
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	32mm	32mm	32mm	32mm	32mm	32mm
Tire Outer Diameter	686mm	686mm	686mm	686mm	686mm	686mm
Bike Length with Tires	1668mm	1686mm	1683mm	1696mm	1709mm	1722mm
Crank Length	170mm	170mm	172.5mm	172.5mm	175mm	175mm
Handlebar Width	390438mm	390438mm	390438mm	410458mm	410458mm	430478mm
Stem Length	90mm	90mm	100mm	100mm	110mm	110mm

Published Sizing Recommendations

Height

13 ft 4 in

13 ft 2 in

14 ft 4 in

14 ft 10 in

15 ft 4 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.

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Source:https://bmc-switzerland.com/collections/roadmachine-road-bikes/products/roadmachine-one-bikes-bmc-26a-000027#geometry_NUGnEj