Touratech - High Performance Air Filter AU-1448ST - KTM Adventure 790 /R**** On many of our trips in dusty and dry countries and on many sporting events and rallies we had the problem that fine dust kept on getting through the air filter and into the intake system. Sometimes with serious consequences for the engine. We have tried and tested a large number of air filters over the last few years. We found the solution to our dust problem in Australia. Unifilter Australia gave us an air filter to test that fully met our