{"product_id":"surly-karate-monkey-mountain-frame-mtbf0135","title":"Surly Karate Monkey Frameset 27.5 Steel Alloy-Lost at Sea Blue, Trail-Optimized Geometry, Gnot-Boost Dropouts, Internal Dropper Routing, Heavy-Duty Chromoly, Versatile MTB and Gravel Bike Frame","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eElevate your mountain biking and trail adventures with the Surly Karate Monkey Frameset-crafted for durability, versatility, and style. Built from premium 100% Surly Chromoly steel, this rugged frameset combines advanced engineering with timeless design, making it the ideal choice for cyclists seeking a high-performance, reliable off-road rig.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-2\"\u003e\u003cp\u003eMaterials \u0026amp; Construction\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-3\"\u003e\u003cp\u003eConstructed from double-butted, high-strength Chromoly steel, the Surly Karate Monkey Frameset offers exceptional strength-to-weight ratio, superior ride quality, and enhanced durability. The steel fork, matched with the frame's robust tubeset featuring Surly's custom trumpet tubes, ensures reliable performance across rugged terrains. The 44mm headtube supports versatile steering precision, accommodating a range of handlebars and setups.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-4\"\u003e\u003cp\u003ePerformance \u0026amp; Engineering\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-5\"\u003e\u003cp\u003eDesigned with updated, progressive trail geometry, the Karate Monkey delivers confident handling, stability, and agility on technical trails and long-distance rides alike. The adjustable rear Gnot-Boost dropout system (145mm spacing) provides compatibility with multiple drivetrain configurations-including 142, 148 (12mm thru-axle), and 135mm setups with washers-maximizing versatility for single-speed, geared, or fat-tire builds. Internal dropper post routing with a 30.9mm seat tube diameter simplifies post installation and upgrades, enhancing rider control on downhill descents or technical climbs.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-6\"\u003e\u003cp\u003eComponents \u0026amp; Technology\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-7\"\u003e\u003cp\u003eThis frameset supports generous tire clearance-up to 29 x 2.55 inches or 27.5 x 3 inches-perfect for aggressive trail riding, fat tires, or mixed-terrain adventures. Disc brake compatibility ensures reliable stopping power in all weather conditions, with mounting points designed for modern hydraulic disc brakes. The steel rigid fork complements the frame's ruggedness, adding to the bike's straightforward, maintenance-friendly design.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-8\"\u003e\u003cp\u003eStyle \u0026amp; Use Case\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-9\"\u003e\u003cp\u003eAvailable in the striking 'Lost at Sea Blue,' the Karate Monkey frameset boasts a custom, eye-catching color that stands out on the trail. Its versatile 27.5 and 29 wheel size options empower riders to customize their setup based on terrain and riding style, from nimble cross-country to full-on trail assaults. Whether you're building a do-it-all adventure bike, a fat-tire trail rig, or a rugged commuter, this frameset offers unmatched versatility and style.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-10\"\u003e\u003cp\u003eInnovative Features\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-11\"\u003e\u003cp\u003e- Adjustable Gnot-Boost rear dropout system for seamless wheel and drivetrain compatibility\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- Internal dropper seatpost routing for modern, upgrade-ready functionality\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003e- Double-butted, trumpet tubeset for optimized strength and lightweight performance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- Clearances designed for fat tires and wide rims for adventurous riding\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003eKey Specifications\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-16\"\u003e\u003cp\u003e- Material: 100% Chromoly Steel (Frame \u0026amp; Fork)\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-17\"\u003e\u003cp\u003e- Wheel Compatibility: 27.5\" \u0026amp; 29\" wheels, with tire clearance up to 3 inches for 27.5 x 3 or 29 x 2.55 tires\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-18\"\u003e\u003cp\u003e- Drivetrain Compatibility: Adjustable rear dropout system supports 135mm, 142mm, and 148mm thru-axle configurations\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-19\"\u003e\u003cp\u003e- Brake Compatibility: Disc brakes (mounting points compatible with hydraulic systems)\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-20\"\u003e\u003cp\u003e- Color: Lost at Sea Blue\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-21\"\u003e\u003cp\u003eUpgrade your cycling rig with the Surly Karate Monkey Frameset-engineered for trail, adventure, and durability. Perfect for dedicated mountain bikers, touring enthusiasts, or anyone seeking a customizable, high-performance steel bike frame. Ride with confidence, style, and innovative engineering-get your build started today!\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003ePremium Steel Construction with 100% Surly Chromoly Steel Frame and Fork, offering durability, strength, and a smooth ride on rugged trails. \u003c\/li\u003e\n\u003cli\u003eAdvanced Trail Geometry \u0026amp; Custom Tubeset: Features progressive trail geometry and a unique trumpet tubeset for optimized handling, responsiveness, and optimized weight distribution. \u003c\/li\u003e\n\u003cli\u003eGnot-Boost Compatibility \u0026amp; Adjustable Dropouts: Equipped with innovative Gnot-Boost rear dropout system and adjustable spacing from 135mm to 148mm, providing versatility for multiple drivetrain configurations and wheel sizes. \u003c\/li\u003e\n\u003cli\u003eInternal Dropper Post Routing \u0026amp; Tire Clearance: Includes internal routing for 30.9mm dropper seatposts, along with ample clearance for 27.5 x 3.0 or 29 x 2.55 tires, perfect for aggressive trail riding and versatility. \u003c\/li\u003e\n\u003cli\u003eModern Style \u0026amp; Unique Color Finish: Finished in stunning Lost at Sea Blue, combining bold aesthetics with rugged performance, making it an eye-catching choice for trail enthusiasts seeking style and substance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Surly","offers":[{"title":"Default Title","offer_id":42201911492675,"sku":"MTBF0135","price":999.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/FM3031_635e8471-deb2-4d8e-8856-d5e4ec92a8a4.jpg?v=1779338394","url":"https:\/\/365cycles.com\/products\/surly-karate-monkey-mountain-frame-mtbf0135","provider":"365 Cycles","version":"1.0","type":"link"}