2021 All-City Cycles Gorilla Monsoon GRX

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Steel
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

43cm
46cm
49cm
52cm
55cm
58cm
61cm
Stack
534mm
547mm
557mm
579mm
598mm
622mm
645mm
Reach
357mm
363mm
368mm
374mm
382mm
389mm
402mm
Stack to Reach Ratio
1.5:1
1.51:1
1.51:1
1.55:1
1.57:1
1.6:1
1.6:1
Seat Tube Length, C-TTT
415mm
445mm
475mm
510mm
540mm
570mm
600mm
Top Tube Length, Effective/Horizontal HT Top
505mm
520mm
528mm
545mm
565mm
585mm
605mm
Top Tube Slope
13.6deg
11.5deg
9.1deg
7.7deg
6.5deg
6deg
5.2deg
Head Tube Angle
70deg
71deg
71deg
71.5deg
71.5deg
71.5deg
71.5deg
Seat Tube Angle
74.5deg
74deg
74deg
73.5deg
73deg
72.5deg
72.5deg
Head Tube Length
115mm
125mm
135mm
155mm
175mm
200mm
225mm
Bottom Bracket Drop
62.5mm
62.5mm
62.5mm
62.5mm
62.5mm
62.5mm
62.5mm
Bottom Bracket Height
290.5mm
290.5mm
290.5mm
290.5mm
290.5mm
290.5mm
290.5mm
Chainstay Length
430mm
430mm
430mm
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
425.4mm
425.4mm
425.4mm
425.4mm
425.4mm
425.4mm
425.4mm
Front-Center
584.9mm
585.9mm
594.9mm
598.8mm
613.8mm
628.7mm
649.6mm
Front-Center Horizontal
581.6mm
582.6mm
591.6mm
595.6mm
610.6mm
625.6mm
646.6mm
Wheelbase
1007mm
1008mm
1017mm
1021mm
1036mm
1051mm
1072mm
Fork Offset/Rake
50mm
50mm
50mm
47mm
47mm
47mm
47mm
Fork Length (On-Axis)
395mm
395mm
395mm
395mm
395mm
395mm
395mm
Trail
75.3mm
high
68.7mm
high
68.7mm
high
68.5mm
high
68.5mm
high
68.5mm
high
68.5mm
high
Mechanical Trail
70.7mm
64.9mm
64.9mm
65mm
65mm
65mm
65mm
Wheel Flop
24.2mm
21.1mm
21.1mm
20.6mm
20.6mm
20.6mm
20.6mm
Standover Height
711mm
735.5mm
758.2mm
788.3mm
813.4mm
840.1mm
866.8mm
Tire to Pedal Spindle
67mm
165 mm cranks
68mm
165 mm cranks
71.9mm
170 mm cranks
75.9mm
170 mm cranks
90.8mm
170 mm cranks
100.7mm
175 mm cranks
121.6mm
175 mm cranks
Pedal Spindle to Ground Clearance
125.5mm
165 mm cranks
125.5mm
165 mm cranks
120.5mm
170 mm cranks
120.5mm
170 mm cranks
120.5mm
170 mm cranks
115.5mm
175 mm cranks
115.5mm
175 mm cranks

GRX Build

43cm
46cm
49cm
52cm
55cm
58cm
61cm
Wheel Size
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
Tire Width
2.4in
2.4in
2.4in
2.4in
2.4in
2.4in
2.4in
Tire Width Max
2.4in
2.4in
2.4in
2.4in
2.4in
2.4in
2.4in
Tire Outer Diameter
705.9mm
705.9mm
705.9mm
705.9mm
705.9mm
705.9mm
705.9mm
Bike Length with Tires
1712.9mm
1713.9mm
1722.9mm
1726.9mm
1741.9mm
1756.9mm
1777.9mm
Crank Length
165mm
165mm
170mm
170mm
170mm
175mm
175mm
Handlebar Width
400mm
400mm
420mm
440mm
440mm
460mm
460mm
Stem Length
70mm
80mm
90mm
100mm
100mm
110mm
120mm

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
Off-road Touring
Source:https://allcitycycles.com/bikes/gorilla_monsoon_grx