2021 Trek Bikes 520 Disc Grando

	48 cm	51 cm	54 cm	57 cm	60 cm	63 cm
Stack	540mm	551mm	565mm	587mm	625mm	655mm
Reach	368mm	373mm	378mm	383mm	392mm	400mm
Stack to Reach Ratio	1.47:1	1.48:1	1.49:1	1.53:1	1.59:1	1.64:1
Seat Tube Length, C-T	440mm	482mm	512mm	543mm	575mm	605mm
Top Tube Length, Effective/Horizontal HT Top	520mm	531mm	543mm	557mm	583mm	603mm
Top Tube Slope	13.4deg	9.8deg	8deg	7deg	7.6deg	7.6deg
Head Tube Angle	69.5deg	70deg	71deg	71.8deg	71.8deg	72.3deg
Seat Tube Angle	74.3deg	74deg	73.8deg	73.5deg	73deg	72.8deg
Head Tube Length	115mm	125mm	140mm	160mm	200mm	230mm
Bottom Bracket Drop	75mm	75mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	276mm	276mm	281mm	281mm	281mm	281mm
Chainstay Length	450mm	450mm	450mm	450mm	450mm	450mm
Chainstay Length Horizontal	443.7mm	443.7mm	444.5mm	444.5mm	444.5mm	444.5mm
Front-Center	602mm	606mm	607.5mm	611.5mm	633.4mm	645.3mm
Front-Center Horizontal	597.3mm	601.3mm	603.5mm	607.5mm	629.5mm	641.5mm
Wheelbase	1041mm	1045mm	1048mm	1052mm	1074mm	1086mm
Fork Offset/Rake	52mm	52mm	52mm	52mm	52mm	52mm
Trail	75.7mm high	72.4mm high	65.9mm high	60.7mm mid/neutral	60.7mm mid/neutral	57.4mm mid/neutral
Mechanical Trail	70.9mm	68.1mm	62.3mm	57.6mm	57.6mm	54.7mm
Wheel Flop	24.8mm	23.3mm	20.3mm	18mm	18mm	16.6mm
Standover Height	713mm	741mm	768mm	794mm	826mm	854mm
Tire to Pedal Spindle	81mm 170 mm cranks	85mm 170 mm cranks	86.5mm 170 mm cranks	90.5mm 170 mm cranks	112.4mm 170 mm cranks	124.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	106mm 170 mm cranks	106mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks

	48 cm	51 cm	54 cm	57 cm	60 cm	63 cm
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	40mm	40mm	40mm	40mm	40mm	40mm
Tire Outer Diameter	702mm	702mm	702mm	702mm	702mm	702mm
Bike Length with Tires	1743mm	1747mm	1750mm	1754mm	1776mm	1788mm

Published Sizing Recommendations

Height

5 ft 2.200000000000003 in

5 ft 4.200000000000003 in

5 ft 3.799999999999997 in

5 ft 6.099999999999994 in

5 ft 8.5 in

5 ft 8.099999999999994 in

6 ft 0.4000000000000057 in

6 ft 0.7999999999999972 in

6 ft 2.799999999999997 in

6 ft 5.599999999999994 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://www.trekbikes.com/us/en_US/bikes/adventure-touring-bikes/520/520-grando/p/33474/