Open airbox

KTM 690 airbox modification

The original airbox cover is close and doesn’t let the amount of air in to the engine as needed. Espesially if you are you using a trim exhaust system and a different engine mapping. To give some extra power from KTM 690 i decided to modificate the air intake and replace the original air filter with KTM power part air-filter.

  1. I first cut of some of the plastic on the original air intake as picture shows below.
  2. Then I replaced the original paper air filter with a KTM power part air filter.
  3. The results is a much more lively bike. Second gear wheelies, while no problem before seemed, well, less effort.





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