All City Bicycles Gorilla Monsoon Frameset. If you are looking for an exciting way to explore new terrain, dirt trails, gravel roads, or just have an overall good time, look no further than the Gorilla Monsoon Frameset. With geometry based on the All-City GX geo, handling all elements will be stable and comfortable. All-City built this sporty frame with a 612 select tubing steel to give you a springy, durable ride. The Gorilla Monsoon allows you to choose your own adventure based on your favorite activities. We appreciate the huge tire clearance for up to 27 x 2. 4in tires, letting us explore with gravel or mountain tires depending on our needs. The 73mm-sized bottom bracket allows you to choose a wider chainring to take your exploring to the next level. Offered in seven frame sizes, all riders, small or tall, can enjoy long days on the trails. Some more features include flat-mount brakes, 12mm thru-axles, and stealth dropper routing to make for an even more fun ride on your favorite trail, gravel road, or backpacking journey.