Gorilla Monsoon

Gorilla Monsoon


Taking our love of riding drop bar bikes off-road to its logical conclusion, we present you with the Gorilla Monsoon. A sweet beast whose only limits are your imagination and will power.

We’ve taken the capabilities of our famed cross bikes and built a Monster. Our most densely featured bike ever, fully hitting everything on our checklist for a steed that can take us far into the unknown in comfort, style and elegance.

Want to do mixed pavement and single track rides? Put in long days off-road? Do some fire road touring? Camping? Ride across the continent? No problem.

Peep the features: Front and rear thru-axles, front and rear rack and fender mounts, compatibility with Surly-8 and 24-Pack racks, stealth dropper post routing, 27.5 x 2.4” tire clearance (650b x 48 with fenders), signature All-City dropouts, E.D. coating for rust prevention, and three water bottle mounts.

The Gorilla is made from our excellent 612 Select tubing and features a lovely bi-plane crown steel fork. We believe that nothing soaks up bumps or is as durable as a high quality steel fork, for on and off-road touring duties, it is the jam.

Some of you will want to throw 650b x 47c’s in it, that’s cool. The resulting slightly lower BB gives the bike excellent manners when riding with a load and is fully endorsed by us. If you want to run a 700c tire the max is a 42mm tire which will raise your BB by 8mm. 700c x 38 keeps the BB about the same.

As for building it up, there are three cable mounts on the downtube, giving you the option of adding a dropper post. 

Gorilla Monsoon


    Suggested retailers for "" change

    612 Select Tubing

    Our proprietary blend of 4130 double-butted CroMoly tubes. Every piece of tubing on every frame size has been carefully chosen to provide the best ride possible.

    E.D. Coating

    In Electrophoretic Deposition, or E.D., coating the frame or fork is placed in a paint bath where an electric charge is applied. This fuses a thin layer of black satin coating to the tubes inside and out. This coating acts as both a rust preventative inside and a primer out.

    Custom Details

    We’re way into the handbuilt touches when it comes to our frames. Which is why you’ll find things like internal cable routing, custom dropouts, lugged crown forks, reinforcements on the bottle bosses, hidden fender mounts, etc on our framesets.

    Signature Dropouts

    Investment cast, stainless steel vertical disc dropout with a lugged chevron lower portion and “All-City” on the pads.

    Frame + 612 Select CroMoly steel. Double butted down, top, and seat tubes. Externally tapered, ovalized, and dimpled chain stays, tapered seat stays, replaceable derailleur hanger.
    Fork + 4130 CroMoly tapered fork blades, Mountain lugged crown and 15mm thru-axle dropouts, straight steertube, IS Disc Brake Tabs.
    Rear Spacing + 142 x 12
    Brake Compatibility + Disc Only, 160mm Front & Rear Minimum Rotor Size
    Seatpost Diameter + 30.9
    Seat Collar + 33.1mm
    Steerer Tube / Headset + 1-1/8" threadless, EC34 upper & lower, Crown Race 30mm
    Bottom Bracket + 73mm English
    Tire Clearance + 27.5 x 2.4"
    Extras + Rack & fender mounts, E.D. coated for durability and rust prevention
    Headset + Cane Creek 40 Series
    Stem + Promax 3D Forged Stem
    Handlebar + Salsa Cowchipper
    Grip + All-City Silicone Bar Tape w/Locking End Plugs
    Shifter/Brake Lever + SRAM Apex1 Mechanical (1x11)
    Front Derailleur + N/A
    Rear Derailleur + SRAM Apex1, Long Cage
    Brakeset + Hayes CX Expert, 160mm Front & Rear
    Crankset + FSA Comet 1x, Direct Mount 36t Ring
    Bottom Bracket + MegaExo
    Seatpost + TranzX Dropper, 30.9, 80mm travel, 31.8 trigger clamp
    Saddle + All-City Gonzo
    Cassette + Sunrace 11spd, 11-42t
    Chain + SRAM PC1110
    Hubs + WTB 32h, Shimano driver, 6 bolt rotor mount
    Rims + WTB ST i25 TCS 2.0, 27.5", 32h
    Tires + WTB Riddler TCS 27.5" x 2.4"
    Gorilla Monsoon Geometry Line Drawing
    Select up to 3 sizes to view:

    Size 46cm 49cm 52cm 55cm 58cm 61cm
    Head Tube Angle (A) 71 71 71.5 71.5 71.5 71.5
    Seat Tube Angle (B) 74 73.5 73 72.5 72.5 72.5
    Top Tube Length (C) 520 535 555 565 585 605
    Seat Tube Length (D) 470 500 535 565 595 625
    Chainstay Length (E) 430 430 430 430 430 430
    Bottom Bracket Drop (F) 71.5 71.5 71.5 71.5 71.5 71.5
    Fork Offset (G) 50 50 47 47 47 47
    Total Fork Length (H) 395 395 395 395 395 395
    Head Tube Length (I) 110 125 145 165 190 215
    Standover (J) 736.6 759.3 792.2 817.5 844 870.8
    Wheelbase (K) 1001.6 1012.3 1015.3 1030.9 1045.9 1066.4
    Stack (L) 542 556 579 597 621 644.7
    Reach (M) 363 369 372 381 389 401
    Handlebar Width 400 420 440 440 460 460
    Stem Length 80 90 100 100 110 120
    Crank Arm Length 170 170 170 175 175 175
    BK9939 46cm Green Fade Complete
    BK9940 49cm Green Fade Complete
    BK9941 52cm Green Fade Complete
    BK9942 55cm Green Fade Complete
    BK9943 58cm Green Fade Complete
    BK9944 61cm Green Fade Complete
    FM9729 46cm Green Fade Frameset
    FM9730 49cm Green Fade Frameset
    FM9731 52cm Green Fade Frameset
    FM9732 55cm Green Fade Frameset
    FM9733 58cm Green Fade Frameset
    FM9734 61cm Green Fade Frameset