2020 Alchemy Bicycles Atlas Base

	52	54	56	58	61
Stack	525mm	550mm	572mm	592mm	612mm
Reach	370mm	383mm	390mm	396mm	411mm
Stack to Reach Ratio	1.42:1	1.44:1	1.47:1	1.49:1	1.49:1
Seat Tube Length, C-T	470mm	520mm	540mm	560mm	575mm
Top Tube Length, Effective/Horizontal HT Top	522mm	543mm	560mm	575mm	601mm
Top Tube Slope	8.3deg	5.5deg	5.7deg	5.7deg	6.2deg
Head Tube Angle	71.5deg	73deg	73.2deg	73.5deg	73.8deg
Seat Tube Angle	74deg	73.8deg	73.5deg	73.2deg	72.8deg
Head Tube Length	130mm	150mm	170mm	190mm	210mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	269mm	269mm	269mm	269mm	269mm
Chainstay Length	415mm	415mm	415mm	415mm	415mm
Chainstay Length Horizontal	409.1mm	409.1mm	409.1mm	409.1mm	409.1mm
Front-Center	580mm	580mm	590mm	600mm	620mm
Front-Center Horizontal	556mm	566mm	581mm	591mm	606mm
Wheelbase	965mm	975mm	990mm	1000mm	1015mm
Fork Offset/Rake	32mm	34.6mm	37.7mm	38.7mm	36mm
Trail	79.7mm high	67.5mm high	63mm mid/neutral	60.1mm mid/neutral	61mm mid/neutral
Mechanical Trail	75.6mm	64.5mm	60.3mm	57.6mm	58.6mm
Wheel Flop	24mm	18.9mm	17.4mm	16.4mm	16.3mm
Standover Height	750mm	770mm	790mm	815mm	830mm
Tire to Pedal Spindle	71mm 170 mm cranks	71mm 170 mm cranks	81mm 170 mm cranks	91mm 170 mm cranks	111mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks

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://alchemybicycles.com/product/atlas-carbon/

Geometry