Super Saiyan 5

Super Saiyan 4 Super Saiyan or simply, Super Saiyan 5 is when a saiyan has transformed into a super saiyan while in super saiyan 4, achieving greater power than previously thought possible. This form is similar to super saiyan 4 except both hair and fur is golden and power increased by a 1000, therefore putting this form at the saiyans pinnacle of transformations. Since this form is a super version of Super saiyan 4 it still has the greater ki control, energy absorption and pushing all the saiyans powers to its absolute limit.

https://static.wikia.nocookie.net/dragonballaffanon/images/8/86/Goku_SSJ5_by_madziax.png/revision/latest/scale-to-width-down/349?cb=20110402031404