
Belgian company Tankgrip has developed an innovative system to make life easier for pillions on sport bikes, relocating their grip from the rear rail, or rider's waist, to a custom-made set of handles on the fuel tank.
Each set is custom-made, in carbon fibre or a painted material. It looks as though the set-up is designed to grip the fuel tank at the front and rear seams to get maximum adhesion.
Cost isn't mentioned, but we suspect it would be substantial, given the customised nature of the product.
See this link.