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All City Bicycles
Gorilla Monsoon Apex Gravel Bike

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Why We Like The All-City Gorilla Monsoon Apex Gravel Bike

The Gorilla Monsoon Apex Gravel Bike is made for more. More doubletrack, gravel grinding, exploration, along with the timeless style and predictable ride quality of a steel frame. It's a do-it-all drop-bar bike that takes comfort up a notch while offering the versatility to tackle tarmac, singletrack, and everything in between. Mounts for fenders and racks in the front and back make it easy to load this bike up with gear, and clearance for either 27.5 x 2.4in or 700c x 42mm tires means we can set the bike up exactly how we like. All-City also includes a dropper seat post for tackling steep descents with confidence, and hydraulic disc brakes that improve stopping power in all conditions.

A few signature details stand out with this bike, and that includes the 612 Select Tubing for sporty handling and comfort with off-road fun. Reinforced bottle bosses and a signature seat collar show All-City's style, along with a lugged bi-plane fork crown. We like that we can take this bike out for a quick commute or a lengthy bikepacking trip. No matter how many miles we put down or how rugged the road, the Gorilla Monsoon Apex Gravel Bike keeps up comfortably.

*Due to a high demand in the global supply chain and bike industry since the start of the pandemic, material weight and exact components are subject to change. We are working diligently to keep tech specs updated, and any adjustments will be of equal or better spec level. If you have any questions, reach out to a Gearhead by chatting online or calling 1-888-276-7130.


  • A versatile gravel bike for backroads, trails, and more
  • Equipped with lofty 2.4in tires to float over rough terrain
  • Size range accommodates the largest and smallest riders
  • Mounts for fenders and racks make commutes and trips easy
  • Chromoly steel frame offers durability and predictable handling
  • Flat-mount disc brakes offer power and a tidy aesthetic
  • Dropper seatpost has us navigating steep descents with confidence
  • Clearance for 700c x 42mm or 27.5 x 2.4in tires
  • Item #ACA000K
Frame Material
612 Select Chromoly Steel
612 Select Chromoly Steel
Cane Creek 40 Series
SRAM Apex 1, 11-speed
Rear Derailleur
SRAM Apex 1, long cage
FSA Comet, MegaEVO
Chainring Sizes
Crank Arm Length
[43, 46cm] 165mm, [49, 52, 55cm] 170mm, [58, 61cm] 175mm
Bottom Bracket
SunRace, 11-speed
Cassette Range
11 - 42t
Tektro MD-C550
Brake Type
mechanical flat mount disc
Tektro TR160-22, 160mm
JD, AL6061, 12-degree flair
Handlebar Drop
Handlebar Width
[43cm, 46cm] 400mm, [49cm] 420mm, [52cm, 55cm] 440mm, [58cm, 61cm] 460mm
Bar Tape
All-City Embossed Black Tape
JD, AL6061, +/- 6-degree rise
Stem Length
[43cm] 70mm, [46cm] 80mm, [49cm] 90mm, [52cm, 55cm] 100mm, [58cm] 110mm, [61cm] 120mm
All-City Gonzo or DDK-5255
TranzX JD-TSI01 dropper
[rims] WTB ST i25 TCS 2.0, 32h
[front] Novatec D981SB, 6-bolt [rear] Novatec D982SB, 6-bolt
Front Axle
12 x 100mm thru-axle
Rear Axle
12 x 142mm thru-axle
Tire Clearance
27.5 x 2.4in, 700c x 42mm
WTB Riddler
Tire Size
27.5 x 2.4in
not included
three bottle mounts, fender mounts, rack mounts
Claimed Weight
[58] 28lb 1oz (12.73kg)
Manufacturer Warranty
limited 3 years

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