Description
Soma Jawbone Frame B-Type
- 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 2.6” / 700c x 38mm to 29 x 2.25”
- For matching fork please consider SF4030
Item Specifications
- model|size|seat tube (c-t)|top tube (effective, c-c)|chainstay|head angle|seat angle|bottom bracket|seatpost|front derail|wheel size|dropout|color: Jawbone B-Type|58cm|545mm|583mm|435-455mm|71 deg|73 deg|73mm|27.2mm|28.6mm|29"|10x135mm QR|black