Recetly swapped my Dura Ace Rotors to a Galfer Wave rotor. Since there is a shortage in stock for the Centrelock version I went ahead and bought a ISO 6 bolt version first. Upon arrival of the Centrelock 160mm rotor I had weighed them before performing the swap.To my suprise the difference is merely 2g between the Centrelock and 6 bolt version. Using galfer's own adapter (As seen below)

                                                               6 Bolt Galfer Wave Rotor

                                                              Galfer Wave rotor Centrelock

Specialized S-WORKS SL7 - One Bike to rule them all.......Indeed it does live up to its slogan...Varmac is its call sign which is a combi of Venge + Tarmac.