2020 Batch E-Bike Base

	15"/Small	17.5"/Medium	20"/Large
Stack	545mm	580mm	615mm
Reach	410mm	430mm	450mm
Stack to Reach Ratio	1.33:1	1.35:1	1.37:1
Seat Tube Length, C-T	381mm	445mm	508mm
Top Tube Length, Effective/Horizontal Center	573mm	602mm	641mm
Top Tube Slope	19.1deg	15.4deg	12.2deg
Head Tube Angle	71.5deg	71.5deg	71.5deg
Seat Tube Angle	73deg	73deg	73deg
Head Tube Length	105mm	140mm	175mm
Bottom Bracket Drop	65mm	65mm	65mm
Bottom Bracket Height	272mm	272mm	272mm
Chainstay Length	480mm	480mm	480mm
Chainstay Length Horizontal	475.6mm	475.6mm	475.6mm
Front-Center	611.9mm	642.7mm	682.5mm
Front-Center Horizontal	608.4mm	639.4mm	679.4mm
Wheelbase	1084mm	1115mm	1155mm
Fork Offset/Rake	35.9mm	35.2mm	43.1mm
Trail	74.9mm high	75.7mm high	67.4mm high
Mechanical Trail	71.1mm	71.7mm	63.9mm
Wheel Flop	22.6mm	22.8mm	20.3mm
Standover Height	683mm	740mm	794mm
Tire to Pedal Spindle	104.9mm 170 mm cranks	133.2mm 172.5 mm cranks	170.5mm 175 mm cranks
Pedal Spindle to Ground Clearance	102mm 170 mm cranks	99.5mm 172.5 mm cranks	97mm 175 mm cranks

Published Sizing Recommendations

Height

4 ft 11 in

5 ft 6 in

5 ft 5 in

5 ft 10 in

5 ft 11 in

6 ft 3 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.batchbicycles.com/ebike-geometry-chart