Can I upsize from a 340cc to a 560cc Buttock Implant? Will it make a visible difference?

yes, it will certainly make a difference you may run the risk of complications depending on your frame and if it can sustain such a large implants. Please be sure to choose a board certified plastic surgeon who specializes in buttock implants and has a proven history of success with such a surgery.

There are multiple factors to consider when upsizing buttock implants. In your particular case, it would be very helpful to know the shape of your implants because if your implants round and you’re upsizing the diameter (from the 340 to the 560) and thus width of the implant, it may be too wide for the width of your gluteus muscle which would then make the implant bulge unnaturally out to the side and be very visible/palpable in the hip area. In this case it would be best to consider switching to an oval anatomic shaped implant such as the Stanton Anatomic buttock implant that can be custom-made to fit your exact dimensions but with more thickness (i.e. projection) to the implant compared to the implant you currently have. Especially when going larger, a Stanton Anatomic oval implant also looks much more natural when bending over. Glad to be of help.

The key to this surgery is to select an implant that is not so large that the muscle cannot cover it reliably. You want a nice result, but you want to avoid the complications (need for removal, infection, extrusion, fluid collection, implant migration, implant visibility, and capsular contracture among others). Studies have demonstrated that sizes above 350 cc have a greater rate of complications. You would need to be examined by a board certified PS to determine if your anatomy would accommodate a 560cc butt implant.