{"product_id":"soma-jawbone-b-type-mountain-frame-mtbf0205","title":"Soma Jawbone B-Type Carbon Steel Frame 56cm 29\" Drop Bar Touring Bikepacking Disc Ready with IRD Sliding Dropouts","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eIntroducing the Soma Jawbone B-Type Frame - the ultimate foundation for building versatile drop bar mountain touring, bikepacking, and gravel adventure bikes. Crafted with premium Tange Prestige heat-treated butted Chromoly steel, this frame offers exceptional strength, durability, and ride quality, making it ideal for rugged off-road adventures and long-distance touring.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-2\"\u003e\u003cp\u003eMaterials \u0026amp; Engineering:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-3\"\u003e\u003cp\u003eConstructed from high-quality Tange Prestige heat-treated butted CrMo steel, the Jawbone B-Type delivers superior fatigue resistance and a smooth, responsive ride. The butted CrMo rear end enhances weight savings without compromising strength, ensuring your bike handles tough terrain with confidence. Designed with a 70.5 head angle and 73 seat angle, this frame offers excellent stability and control across diverse riding conditions.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-4\"\u003e\u003cp\u003ePerformance \u0026amp; Components:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-5\"\u003e\u003cp\u003eEquipped with IRD Broski sliding dropouts, this frame provides versatile drivetrain compatibility, supporting both traditional derailleurs and geared hubs like Rohloff. The stock dropout insert accommodates 135mm quick-release hubs, with optional 142 x 12mm thru-axle inserts available for added stiffness and modern compatibility. The frame features IS mount disc brake tabs for reliable, easy-to-maintain disc brake setup, supporting a wide range of brake options for optimal stopping power.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-6\"\u003e\u003cp\u003eStyle \u0026amp; Use Case:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-7\"\u003e\u003cp\u003eDesigned in sleek black, the Soma Jawbone B-Type exudes classic style with a modern edge. Its durable construction, expansive tire clearance (up to 2.6\" or 700c x 38mm), and ample cargo mount points make it perfect for bikepacking, gravel grinding, mountain touring, and adventure riding. The frame includes multiple bottle cage bosses and cargo rack eyelets, enabling efficient gear carrying for extended excursions or overnight trips.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-8\"\u003e\u003cp\u003eInnovative \u0026amp; Differentiating Features:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-9\"\u003e\u003cp\u003e- Versatile Drivetrain Compatibility: Supports 1-1\/8\" or tapered steerers with optional parts; perfect for both traditional and modern forks.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-10\"\u003e\u003cp\u003e- Flexible Tire Clearance: Fits 27.5\" x 47mm or 700c x 38mm tires, allowing customization based on terrain and riding style.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-11\"\u003e\u003cp\u003e- Multiple Mounting Options: Equipped with multiple bottle cage bosses and cargo eyelets for optimal bikepacking setup.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- Size \u0026amp; Fit: 56cm frame with a 569mm top tube length and 525mm seat tube, designed to deliver a comfortable, confident ride for a variety of riders.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003eSpecifications:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- Wheel Size: 29\"\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003e- Frame Size: 56cm\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-16\"\u003e\u003cp\u003e- Material: Tange Prestige Heat-Treated CrMo Steel\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-17\"\u003e\u003cp\u003e- Tire Compatibility: 27.5 x 47mm to 2.6\" \/ 700c x 38mm to 29 x 2.25\"\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-18\"\u003e\u003cp\u003e- Bottom Bracket: 73mm English threaded\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-19\"\u003e\u003cp\u003e- Headtube: 44mm, suitable for 1-1\/8\" or tapered steerers with optional swaps\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-20\"\u003e\u003cp\u003e- Dropouts: 10x135mm QR with optional thru-axle inserts\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-21\"\u003e\u003cp\u003eElevate your adventure cycling with the Soma Jawbone B-Type Frame - built for durability, versatility, and endless exploration. Whether you're gearing up for rugged mountain trails, extended bikepacking trips, or gravel races, this frame offers the perfect mix of performance, strength, and style to bring your cycling vision to life.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eDesigned with Tange Prestige heat-treated butted CrMo steel, the Soma Jawbone B-Type Frame offers exceptional durability, lightweight performance, and responsive ride quality for demanding bikepacking adventures and mountain touring. \u003c\/li\u003e\n\u003cli\u003eFeatures IRD Broski Sliding Dropouts compatible with derailleurs and geared hubs like Rohloff, providing versatile drivetrain options for custom builds and wide gear range performance.\u003c\/li\u003e\n\u003cli\u003eEquipped with IS mount disc brake tabs and a 44mm head tube, this frame supports both 1-1\/8\" and tapered steerer forks, ensuring adaptable compatibility with a variety of suspension and rigid forks for enhanced braking power and steering precision.\u003c\/li\u003e\n\u003cli\u003eStyled in sleek black, the Jawbone B-Type combines rugged mountain bike aesthetics with practical touring features such as rear rack and fender eyelets, two sets of bottle cage bosses, and cargo cage mounts for versatile bikepacking and touring configurations.\u003c\/li\u003e\n\u003cli\u003ePrecision engineering includes a 73mm bottom bracket, 29\" wheel compatibility, and a tire width range of 27.5 to 29 inches, making it ideal for riders seeking a durable, adaptable platform for off-road adventures, gravel riding, and multi-day bikepacking trips.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Soma","offers":[{"title":"Default Title","offer_id":42355331072067,"sku":"MTBF0205","price":769.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/SF4022.jpg?v=1773628474","url":"https:\/\/365cycles.com\/products\/soma-jawbone-b-type-mountain-frame-mtbf0205","provider":"365 Cycles","version":"1.0","type":"link"}