Nickent's Evolver 4DX (based on the 4DX head design) comes with two shafts (one higher launch), and others can be added ($480, nickentgolf.com).
TaylorMade's r7 CGB Max Limited has a clubhead with three movable weights, additional weights and three shafts ranging from 55 to 75 grams ($1,000, taylormadegolf.com).
Callaway's i-Mix technology combines individually purchased FT-i and FT-5 heads with a range of 1,600 combinations ($435 to $500 for heads, $185 to $435 for shafts, callawaygolf.com).