Spin Gear Core: South Magnecore
Note: When used in an SG, any Magnecore is listed as "Magne Version" with no specification of the polarity or variety. These are listed in PlasticsDB part section names for clarity.
Main attribute is its specific weight, resulting in a distribution not as centrally-focused as a Heavy Metal Core, yet with enough weight to help a little with recoil, Magnecores tend to be a decent choice if trying to control recoil on Attack types which care about stamina such as those using SG Metal Flat Base (Gaia Dragoon V Version). They usually tend to be a slightly better balance here than Metal Weight Core as the extra weight does not cause losses against any notable opponents but does provide slightly better rotational recoil control, while providing better stamina and faster movement than a Heavy Metal Core.
Only noticeable effect of the magnetic gimmick for regular play is when using a magnetized tip (Customize Grip Base Tip, Magne Flat Base Tip), which are attracted to South Magnecores, or Magne Weight Disk (which can be flipped over as needed anyway), and even here the effect on performance is negligible - the only actual impact is in terms of assembly difficulty.
Defensively, and for rotational recoil control, it is outclassed by the significantly heavier Heavy Metal Core, however it is the next best thing, and still works okay for Defense/Compacts, albeit not nearly as well as an HMC due to the significant difference in weight. It has some use on Driger V2 combos for certain outspins, but generally an HMC is superior, and always preferred when using Wide Defense.
In Magne Stadia, South Magnecores are intended to be offensive (by being repelled by magnets, thus moving around erratically).