NEW All-City Gorilla Monsoon GRX Adventure Gravel Bike, Aqua Seafoam

A sweet beast designed for chasing good times, the Gorilla Monsoon builds on All-City’s proven cross geometry to handle camping, dirt touring, and exploring the unknown. Built around 27.5 x 2.4” tires and offered in seven frame sizes, it comfortably accommodates our smallest and tallest riders for long days in the saddle. Features like stealth dropper post routing and full touring mounts round out this elegantly styled steed.

612 Select Tubing — Selected specifically for sporty handling on the course, comfort on tours, and maximum fun
Geometry – adapted from All-City CX geo, plus the ability to support some load
73mm bottom bracket allows for a wider chainring option and ample tire clearance
Stealth dropper routing
Tire clearance – 27.5 x 2.4” or 700c x 42mm
Bi-plane fork crown features four-point rack mount and mounts for fender

Build Kit

Frame : 612 Select Chromoly Steel, TIG Welded and Brazed, E.D. Coated
Fork : 612 Select Chromoly Steel, All-City Signature fork ends, Bi-Wing Crown, TIG Welded and Brazed, E.D. Coated
Rear Derailleur : Shimano GRX RX810
Cassette/Cog : SunRace 11-speed, 11/42t
Chain : KMC X11 EPT
Crankset : FSA V-Drive 38t, MegaEVO
Bottom Brcket : FSA MegaEVO
Shifter(s) : Shimano GRX RX810
Brakes Levers : Shimano GRX RX810
Brakes : Shimano GRX RX810
Rotors : Shimano SM-RT66,160 f/r, 6-Bolt
Headset : Cane Creek 40 Series
Stem : JD, AL6061, 3D forged, 4-bolt stem, 31.8mm, ±6° Rise
Handlebar : JD, AL6061, 31.8mm, 12° Flair
Seatpost : TranzX JD-TSI01, 27.2, 350mm L, 50mm drop
Saddle : All-City Gonzo or DDK-5255
Wheels : WTB ST i25 TCS 2.0, 32h w/ All City Go Devil Hubs
Tires : WTB Riddler, 27.5 x 2.4", TCS Light/Fast

Sizing
Please note this is an approximate range and the buyer is responsible for verifying the fit before purchase.

43cm 4'11" - 5'4"
46cm 5'2" - 5'8"
49cm 5'4" - 5'9"
52cm 5'5" - 5'10"
55cm 5'9" - 6'1"
58cm 6' - 6'5"
61cm 6'1" - 6'6"

Geometry

Frame measurements (mm)
43cm
46cm
49cm
52cm
55cm
58cm
61cm

A. BB Drop
62.5
62.5
62.5
62.5
62.5
62.5
62.5

B. Chainstay Length
430
430
430
430
430
430
430

C. Fork Length - Axle to Crown
395
395
395
395
395
395
395

D. Fork Offset
50
50
50
47
47
47
47

E. Head Tube Angle (deg)
70
71
71
71.5
71.5
71.5
71.5

F. Headtube Length
115
125
135
155
175
200
225

G. Reach
357
363
368
374
382
389
402

H. Seat Tube Angle (deg)
74.5
74
74
73.5
73
72.5
72.5

I. Seat Tube Length - Center to Top
415
445
475
510
540
570
600

J. Stack
534
547
557
579
598
622
645

K. Standover
711
735.5
758.2
788.3
813.4
840.1
866.8

L. Top Tube Length (Effective)
505
520
528
545
565
585
605

M. Wheelbase
1007
1008
1017
1021
1036
1051
1072

Component measurements (mm)

Crank Arm Length
165
165
170
170
170
175
175

Handlebar Width
400
400
420
440
440
460
460

Stem Length
70
80
90
100
100
110
120