Which Modular Kit do you recommend for the Neumann KMR 81 D?

For the KMR-81D, we'd recommend a Modular Windshield WS 3 Kit. Order codes and additional information on this solution can be found here:

http://mymic.rycote.com/products/windshield-solutions/modular-windshield-kit/modular-windshield-ws-3-kit-/