Soma Jawbone B-Type Frame 56cm 29" - Black

Description

• Designed 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.
• Features IRD Broski Sliding Dropouts compatible with derailleurs and geared hubs like Rohloff, providing versatile drivetrain options for custom builds and wide gear range performance.
• Equipped 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.
• Styled 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.
• Precision 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.

The Jawbone B-Type frame is the perfect platform to build drop bar mountain touring and bike packing rig. Tange Prestige heat-treated butted CrMo steel; butted CrMo rear end. IRD Broski Sliding Dropouts allows for running derailleurs as well as geared hubs like Rohloff (Stock dropout insert is for 135mm QR. 142 x 12mm Thru-Axle inserts available separately, SF4958, SF4959. SF4960-142x12mm axle ). IS mount disc brake tabs. Front derailleur compatible (bottom pull). Headset for optional 1-1/8" matching fork: SHIS: ZS44/28.6 | ZS44/30. If running a tapered steerer fork, get an EC44 lower cup. Rear rack and fender eyelets. Two sets of bottle cage bosses; one set of cargo cage bosses on downtube. 44mm headtube: Fits 1-1/8" steerer tubes and tapered steerer tubes with a headset swap. 27.2mm post size/28.6mm frt. der. size/29.8mm seat collar, 73mm bottom bracket (English threads). Tire Width Range: 27.5 x 47mm to 2.6a? / 700c x 38mm to 29 x 2.25a?. For matching fork please considerA SF4030Item Specifications: Top Tube: 569mm, Front Derail: 28.6mm, Wheel Size: 29", Size: 56cm, Color: Black, Chainstay: 435-455mm, Seat Angle: 73 Deg, Seatpost: 27.2mm, Seat Tube: 525mm, Bottom Bracket: 73mm, Model Name: Jawbone B-Type, Head Angle: 70.5 Deg, Dropout: 10x135mm QR,

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