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Gorilla Monsoon

Gorilla Monsoon

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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.

Gorilla Monsoon
COMPLETE MSRP $1999  |  FRAMESET MSRP $850

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 + 30.9mm, Seat Collar 33.1
Steerer Tube / Headset + 1-1/8" threadless, EC34 upper & lower, Crown race 30.0
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
Bar Tape + 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 Moun 36t Ring
Bottom Bracket + MegaExo
Seatpost + Promax 30.9mm
Saddle + All-City Gonzo
Cassette + Sunrace 11spd, 11-42t
Chain + SRAM PC1110
Hubs + Novatec Sealed Bearing, 32h, Black
Rims + WTB STP i25 TCS, 27.5", 32h
Tires + WTB Ridler TCS 27.5" x 2.4"
Gorilla Monsoon Geometry Line Drawing
Select up to 3 sizes to view:
46cm
49cm
52cm
55cm
58cm
61cm

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 73 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 40cm 42cm 44cm 44cm 46cm 46cm
Stem Length 80mm 90mm 100mm 100mm 110mm 120mm
Crank Arm Length 170mm 170mm 170mm 175mm 175mm 175mm
BK5831 Complete 46cm Orange Fade
BK5832 Complete 49cm Orange Fade
BK5833 Complete 52cm Orange Fade
BK5834 Complete 55cm Orange Fade
BK5835 Complete 58cm Orange Fade
BK5836 Complete 61cm Orange Fade
FM5887 Frameset 46cm Orange Fade
FM5888 Frameset 49cm Orange Fade
FM5889 Frameset 52cm Orange Fade
FM5890 Frameset 55cm Orange Fade
FM5891 Frameset 58cm Orange Fade
FM5892 Frameset 61cm Orange Fade