2020 BMC Switzerland Alpenchallenge AMP Cross LTD

	S	M	L
Stack	565mm	600mm	635mm
Reach	380mm	405mm	425mm
Stack to Reach Ratio	1.49:1	1.48:1	1.49:1
Seat Tube Length, Effective Unknown	443mm	480mm	538mm
Top Tube Length, Effective/Horizontal Unknown	548mm	583mm	608mm
Top Tube Slope	12.2deg	12.2deg	12.2deg
Head Tube Angle	71.25deg	72deg	72deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg
Head Tube Length	120mm	157mm	193mm
Bottom Bracket Drop	70mm	70mm	70mm
Bottom Bracket Height	281mm	281mm	281mm
Chainstay Length	435mm	435mm	435mm
Chainstay Length Horizontal	429.3mm	429.3mm	429.3mm
Front-Center	592mm	628mm	659mm
Front-Center Horizontal	594.7mm	623.7mm	655.7mm
Wheelbase	1024mm	1053mm	1085mm
Fork Offset/Rake	45mm	45mm	45mm
Fork Length (On-Axis)	415mm	415mm	415mm
Trail	71.6mm high	66.7mm high	66.7mm high
Mechanical Trail	67.8mm	63.5mm	63.5mm
Wheel Flop	21.8mm	19.6mm	19.6mm
Standover Height	745mm	777mm	823mm
Tire to Pedal Spindle	71mm 170 mm cranks	107mm 170 mm cranks	138mm 170 mm cranks
Pedal Spindle to Ground Clearance	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks

Published Sizing Recommendations

Height

—

170 cm

185 cm

180 cm

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/media/downloads/download/MY20_AMP_Bike_Geometry.pdf