2018 Trek Bikes 920 Base

	49cm	52cm	54cm	56cm	58cm	61cm
Stack	556mm	567mm	583mm	608mm	627mm	642mm
Reach	385mm	388mm	392mm	395mm	402mm	405mm
Stack to Reach Ratio	1.44:1	1.46:1	1.49:1	1.54:1	1.56:1	1.59:1
Seat Tube Length, C-T	440mm	470mm	490mm	510mm	530mm	560mm
Top Tube Length, Effective/Horizontal HT Top	540mm	551mm	562mm	578mm	594mm	604mm
Top Tube Slope	14.7deg	12.6deg	12deg	12.4deg	12.2deg	10.6deg
Head Tube Angle	70deg	70.5deg	71deg	71.3deg	71.3deg	71.5deg
Seat Tube Angle	74.5deg	74deg	73.8deg	73.3deg	73deg	72.8deg
Head Tube Length	95mm	105mm	120mm	145mm	165mm	180mm
Bottom Bracket Drop	85mm	85mm	85mm	85mm	85mm	85mm
Bottom Bracket Height	276.8mm	276.8mm	276.8mm	276.8mm	276.8mm	276.8mm
Chainstay Length	465mm	465mm	465mm	465mm	465mm	465mm
Chainstay Length Horizontal	457.2mm	457.2mm	457.2mm	457.2mm	457.2mm	457.2mm
Front-Center	620.7mm	622.7mm	627.6mm	636.5mm	648.4mm	655.4mm
Front-Center Horizontal	614.8mm	616.8mm	621.8mm	630.8mm	642.8mm	649.8mm
Wheelbase	1072mm	1074mm	1079mm	1088mm	1100mm	1107mm
Fork Offset/Rake	55mm	55mm	55mm	55mm	55mm	55mm
Trail	73.2mm high	69.8mm high	66.4mm high	64.4mm mid/neutral	64.4mm mid/neutral	63.1mm mid/neutral
Mechanical Trail	68.7mm	65.8mm	62.8mm	61mm	61mm	59.8mm
Wheel Flop	23.5mm	22mm	20.4mm	19.6mm	19.6mm	19mm
Standover Height	722mm	743mm	760mm	778mm	796mm	817mm
Tire to Pedal Spindle	88.9mm 170 mm cranks	90.9mm 170 mm cranks	95.8mm 170 mm cranks	104.7mm 170 mm cranks	116.6mm 170 mm cranks	123.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	106.8mm 170 mm cranks	106.8mm 170 mm cranks	106.8mm 170 mm cranks	106.8mm 170 mm cranks	106.8mm 170 mm cranks	106.8mm 170 mm cranks

	49cm	52cm	54cm	56cm	58cm	61cm
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	2in	2in	2in	2in	2in	2in
Tire Outer Diameter	723.6mm	723.6mm	723.6mm	723.6mm	723.6mm	723.6mm
Bike Length with Tires	1795.6mm	1797.6mm	1802.6mm	1811.6mm	1823.6mm	1830.6mm

Published Sizing Recommendations

Height	158 cm to 163 cm	162 cm to 169 cm	167 cm to 174 cm	173 cm to 180 cm	179 cm to 186 cm	184 cm to 191 cm
PBH	74 cm to 77 cm	76 cm to 79 cm	78 cm to 82 cm	81 cm to 85 cm	84 cm to 87 cm	86 cm to 90 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.

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Source:https://www.trekbikes.com/us/en_US/bikes/adventure-touring-bikes/920/920/p/21996/?colorCode=tan