2021 Trek Bikes 1120 Base

Category
Rigid MTB
Design
Flat Bar, Rigid, suspension corrected
Frame
Aluminum
Fork
Carbon/Composite
Features
Disc brake
Very upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Average stack and reachvs category

Geometry

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

Base Build

15.5
17.5
19.5
21.5
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
Tire Width
3in
3in
3in
3in
Tire Width Max
3in
3in
3in
3in
Tire Outer Diameter
774.4mm
774.4mm
774.4mm
774.4mm
Bike Length with Tires
1856.4mm
1882.4mm
1916.4mm
1940.4mm
Stem Length
60mm
70mm
70mm
80mm

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

Stack and Reach vs. Category Trend

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.

Learn more about the Upright/Aggressive Scale
Category Trend
Rigid MTB
Source:https://www.trekbikes.com/us/en_US/bikes/adventure-touring-bikes/1120/1120/p/33304/