No, that's not possible it comes with GTA itself, also it's not a bug it's more like an realistic trick, but they could disable the "trick" tho
I see in other servers bikes can reach max speed without doing that "trick" or whatever the name of it thats why I believe there is a way to fix it
They've propably just adjusted the bike's handling and increased it's speed, but removing that is impossible as I told you m pretty sure tho.