After an initial, enforced conversion campaign on 2004 bikes, suspension fork manufacturers became increasingly aware that disc brakes with oversized rotors transmit unexpectedly large forces into the left fork leg. As a result, all manufacturers rushed to publish corresponding recommendations. The statement from RockShox was still pending, but it is now all the simpler: rotors with a diameter of up to 210 millimetres may be installed on forks from the Boxxer, Psylo and Duke series, while the limit for all other forks is 165 millimetres ? including the SID, Pilot and Judy model series.