Soma Jawbone A-Type Frame 58cm 29" - Sage Green

SKU: B-SF4003

$795.95
$795.95
$795.95
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Description
  • The Jawbone A-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
  • Flat mount disc brake tabs on rear
  • Investment cast vertical dropout with replaceable stainless steel hanger. 12 x 142mm thru-axle
  • 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 2.5” / 700c x 38mm to 29 x 2.25”
  • For matching fork please consider YC4022
    • TECH SPECS
    model Jawbone A-Type
    size 58cm
    seat tube (c-t) 545mm
    top tube (effective, c-c) 583mm
    chainstay 445mm
    head angle 71 deg
    seat angle 73 deg
    bottom bracket 73mm
    seatpost 27.2mm
    front derail 28.6mm
    wheel size 29"
    dropout 12x142mm TA
    color sage green

    Product Images Disclaimer
    Product images are for reference only and may not reflect the exact specifications, color, or components of the item offered for sale. Please refer to the product description and specifications for the most accurate details. If you have questions before purchasing, contact us and we’ll be happy to confirm.

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    Who We Are

    Born from a lifelong passion for all things bikes, AMG Cyclery is a small, family-run bike shop and community hub in Seaside, California. Founded by Alex and Alisa Gonzales, we believe cycling is for everyone — whether you’re chasing personal bests, heading out for a Sunday cruise, or just discovering two wheels for the first time. We build bikes that fit your style, service them with precision, and welcome every rider who walks through our doors. With a focus on community, craftsmanship, and riding culture, our shop has even been featured on The Radavist — a reflection of the unique bikes and vibrant energy you’ll find here.

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