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Sockguy Socks
Soma Frames
- 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
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item # |
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 |
in stock? |
SF4020
Oversized item: expedited shipping not available. Incurs a shipping surcharge of $15.00 per unit.
|
Jawbone B-Type |
52cm |
450mm |
539mm |
435-455mm |
70.5 deg |
73.8 deg |
73mm |
27.2mm |
28.6mm |
27.5" |
10x135mm QR |
black |
YES |
SF4024
Oversized item: expedited shipping not available. Incurs a shipping surcharge of $15.00 per unit.
|
Jawbone B-Type |
61cm |
580mm |
600mm |
435-455mm |
71.5 deg |
73 deg |
73mm |
27.2mm |
28.6mm |
29" |
10x135mm QR |
black |
YES |
Soma Frame Hangers & Parts
Soma Drop Bars
Soma Riser Bars
Sooner Cleaners and Degreasers