2021 Trek Bikes 1120 Base

	15.5	17.5	19.5	21.5
Stack	634mm	634mm	642mm	651mm
Reach	396mm	422mm	451mm	471mm
Stack to Reach Ratio	1.6:1	1.5:1	1.42:1	1.38:1
Seat Tube Length, C-T	394mm	419mm	470mm	521mm
Top Tube Length, Effective/Horizontal HT Top	560mm	586mm	619mm	643mm
Top Tube Slope	26.8deg	23.2deg	18.1deg	13.8deg
Head Tube Angle	70.4deg	70.4deg	70.3deg	70.3deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	100mm	100mm	110mm	120mm
Bottom Bracket Drop	76mm	75mm	75mm	75mm
Bottom Bracket Height	311.2mm	312.2mm	312.2mm	312.2mm
Chainstay Length	440mm	440mm	440mm	440mm
Chainstay Length Max	440mm	440mm	440mm	440mm
Chainstay Length Horizontal	433.4mm	433.6mm	433.6mm	433.6mm
Chainstay Length Horizontal Max	433.4mm	433.6mm	433.6mm	433.6mm
Front-Center	653.1mm	678.6mm	712.4mm	736.3mm
Front-Center Horizontal	648.6mm	674.4mm	708.4mm	732.4mm
Wheelbase	1082mm	1108mm	1142mm	1166mm
Wheelbase Max	1082mm	1108mm	1142mm	1166mm
Fork Offset/Rake	51mm	51mm	51mm	51mm
Fork Length (Axle-To-Crown)	510mm	510mm	510mm	510mm
Trail	83.7mm very high	83.7mm very high	84.5mm very high	84.5mm very high
Mechanical Trail	78.9mm	78.9mm	79.5mm	79.5mm
Wheel Flop	26.5mm	26.5mm	26.8mm	26.8mm
Standover Height	778mm	791mm	792mm	792mm
Tire to Pedal Spindle	95.9mm 170 mm cranks	121.4mm 170 mm cranks	155.2mm 170 mm cranks	179.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	141.2mm 170 mm cranks	142.2mm 170 mm cranks	142.2mm 170 mm cranks	142.2mm 170 mm cranks

Published Sizing Recommendations

Height	153 cm to 162 cm	161 cm to 175 cm	174 cm to 188 cm	186 cm to 196 cm
PBH	72 cm to 76 cm	76 cm to 82 cm	82 cm to 88 cm	87 cm to 92 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/1120/1120/p/33304/