Those look like the exact tuners I already have, are you saying the Lightweight GB7s are lighter and are NOT the stock tuners?
They are definitely lighter than the stock tuners that come on Modulus basses. I don't have a scale, but I did a quick fulcrum test with four of these tuners on one side and four stock tuners on the other and the stock tuners almost launched the lighter ones off the other other end.
Sorry I don't have exact weights for you, but I was having a little neck dive one my FU4 and once I replaced the stock tuners with these, it went away.
Also, I think these are not actually GB7, but GB350 if I remember correctly - I think the site has them mislabeled. It's been a while since I ordered and replaced them, but remember seeing that the GB7 tuners are actually the ones with the Y shaped key. Like the ones shown [Invalid or Expired Link Removed].

