All-City Gorilla MonsoonGeometry & Bikepacking Bag Fit2024
Discontinued. All-City no longer lists the Gorilla Monsoon. It's here because these frames stay in circulation second-hand and the geometry is still what you need to pick bags — but you won't find one new.
What it can carry
Mount provision and clearance, as All-City publishes it.
All-City's wording: “Tire Clearance Frame [1]/[2] + 27.5 x 2.4", 700c x 42mm; Tire Clearance Fork [1] + 27.5 x 2.4", 700c x 42mm”
Geometry
All figures in millimeters except angles. Effective top tube and seat tube are the two that decide frame bag fit.
| Size | Eff. top tube | Seat tube | Standover | Head tube | Stack | Reach | Chainstay | Wheelbase | BB drop | Head angle | Seat angle |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 43cm | 505 | 415 | 711 | 115 | 534 | 357 | 430 | 1007 | 62.5 | 70° | 74.5° |
| 46cm | 520 | 445 | 735.5 | 125 | 547 | 363 | 430 | 1008 | 62.5 | 71° | 74° |
| 49cm | 528 | 475 | 758.2 | 135 | 557 | 368 | 430 | 1017 | 62.5 | 71° | 74° |
| 52cm | 545 | 510 | 788.3 | 155 | 579 | 374 | 430 | 1021 | 62.5 | 71.5° | 73.5° |
| 55cm | 565 | 540 | 813.4 | 175 | 598 | 382 | 430 | 1036 | 62.5 | 71.5° | 73° |
| 58cm | 585 | 570 | 840.1 | 200 | 621 | 389 | 430 | 1051 | 62.5 | 71.5° | 72.5° |
| 61cm | 605 | 600 | 866.8 | 225 | 645 | 402 | 430 | 1072 | 62.5 | 71.5° | 72.5° |
Bottom bracket height
Roughly 309mm off the ground. All-Citydoesn't publish this directly — we derive it from their BB drop and a typical 74.2cm tire diameter, so treat it as indicative rather than exact. It changes with the tire you fit. Lower means more stable and more pedal strikes; higher means the opposite.
Source — All-City's own geometry chart: https://allcitycycles.com/bikes/gorilla-monsoon-frameset — checked 2026-08-18. A dash means the figure isn't published; we leave it blank rather than estimate.
Note: Manufacturer page is for the Gorilla Monsoon LTD Frameset. All lengths were already published in millimetres. Tire-clearance footnotes: [1] Different tire and rim combinations will result in different clearances. [2] Depending on drivetrain configuration, tire clearance may be limited by the chain and not the frame. All-City/QBP announced no new product development beyond model year 2024, so no manufacturer-published 2026 model year was found.
Which frame bags fit
Every frame bag we track, checked against this frame's published geometry. Pick your size.
Checking 19 frame bags against a 545mm effective top tube and 510mm seat tube. 19 fit.
Frame bag fit is calculated from All-City's published geometry, so it's as reliable as their chart. Seat packs and handlebar rolls depend on your exposed seatpost and bar width, which no geometry table lists — the bag finder covers those once you add your own measurements.