The Universal Support Bolt clamp is a great solution if you need more bottle storage. this pipe-clamp strap with an integrated braze-on will fit on a variety of diameters, below is a guide.
-1 1/8-inch for handle bars, seat stays
-1 3/8-inch for steel frames and forks
-1 5/8-inch for 32mm suspension forks
-2-inch for aluminum tube bikes, 36mm suspension forks
** Each clamp is sold separately**