  The bundle map $\pi_{h}: \Gamma((A_{tJ})_{t\in [0,1]})\lra A_{hJ}$, for every
$h\in [0,1]$, of the continuous field $(A_{tJ})_{t\in [0,1]}$ associated to the
Rieffel deformation $A_{J}$ of a C*-algebra $A$ is shown to be a KK-equivalence
by using a 2-cocycle twisting approach and RKK-fibrations.
