DNA Stage 2 Performance Air Filter Kit for Yamaha MT-09 / XSR 900 / Tracer 9. Boost the performance of your Yamaha MT-09, XSR 900, or Tracer 9 with the DNA Stage 2 Performance Air Filter Kit. Designed to replace the restrictive stock plastic airbox top cover and OEM air filter, this kit delivers enhanced performance and a more aggressive intake sound. The kit eliminates the OEM intake snorkel and includes everything required for a seamless installation. High Filtering Efficiency : The DNA filter uses 4 layers of DNA® Cotton, achieving 98-99% filtering efficiency, providing superior engine protection even in the toughest riding environments. Increased Airflow : Offering a +54.78% flow increase over the stock Yamaha airbox and filter, the DNA filter drastically improves engine performance. High-Quality Construction : Constructed with 4 layers of surgical cotton gauze sandwiched between epoxy-coated marine-grade aluminium wire mesh for maximum durability and superior airflow. Special DNA Oil : The filter’s cotton is treated with a specially formulated DNA oil that generates a static charge, attracting even the finest dust particles. Easy Maintenance : Minimal care is needed. Simply clean, dry, and re-oil the filter every 3000 miles with the optional DNA Service kit. Stainless steel mounting bracket for the stock ECU. Zip ties to secure the ECU. Additional bolt for airboxes with a drain hole on the clean side (optional for models without the drain hole). Enhanced Performance : Increased airflow results in improved engine performance, unlocking the full potential of your Yamaha. Sporty Sound : Enjoy a more aggressive, sporty intake sound that adds to the riding experience. Durability : Made from high-quality materials, this kit is built for long-lasting reliability and performance. Why Choose the DNA Stage 2 Kit? Performance Boost : Significant increases in airflow enhance your bike’s overall performance. Aggressive Intake Sound : Upgrades your bike’s intake sound for a more exhilarating experience.