Seems like more and more manufacturers are offering bikepacking gear tailermade around their bikes. This from Ibis:
The “Pork Chop” frame bag neatly fits inside the front triangle of the Mojo and Ripley, without the use of paint-dulling straps, and is a co-branded and patented design by Ibis & Blackburn. The bag is manufactured by Blackburn and comes with a lifetime warranty.
The unique internal suspension is designed to secure the bag without the need for straps. Fabric on the outside is nylon ripstop, and the padded ballistic nylon side panels will not rub against your frame. Padding also adds to the durability and there is a water repelling zipper tape with an easy to use pull.
You can still mount water bottles inside the triangle of the Ripley or Mojo.
The internal storage and elastic webbing keeps CO2 cartridges and tools in place.
The Ripley Pork Chop Frame Bag works with any Ripley LS, including the V2 Ripley (Tang or Black) and Gen 3 Ripley (Ti-Ho Silver or VitP Green). The adjustable wedge system secures the pack into the area nested above the shock mount and works with frame sizes Medium, Large, and XL.
The Ripley Pork Chop bag can be found in our online store here or you can order through your Ibis retailer.
For the Mojo HD4/HD3 and Mojo 3, the size-specific Pork Chop Frame Bag is installed in the front aperture. With this design you order the bag size to match your frame size (Medium, Large or XL).
The Mojo Pork Chop bag can be found in our online store here or you can order through your Ibis retailer.