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 inch 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 inch 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
| model |
Jawbone B-Type |
| size |
61cm |
| seat tube (c-t) |
580mm |
| top tube (effective, c-c) |
600mm |
| chainstay |
435-455mm |
| head angle |
71.5 deg |
| seat angle |
73 deg |
| bottom bracket |
73mm |
| seatpost |
27.2mm |
| front derail |
28.6mm |
| wheel size |
29" |
| dropout |
10x135mm QR |
| color |
black |
