Air Filters

  • Uni Y-Boot Filter System for RD250/350/400/R5/DS7 & RZ350. Includes genuine Uni foam filter, New Y-boot, pvc filter support ring, clamps & hardware for mounting. Also available in low profile with a 4" Uni filter.
  • A six-step maintenance system designed to recharge any K&N AirFilter. Completely restores air Flow efficiency so your Air Filter performs like new. Includes: 6 1/2oz. Spray Oil, 12oz, Filter Cleaner, Service Decal and service kit.
  • Y-Boot Filter System for RD250/350/400/R5/DS7. Includes genuine K&N filter, Genuine Yamaha Y-boot, pvc filter support ring, clamps & hardware for mounting. Also available in low profile with a 4" K&N filter (recommended for RD250 and other applications where a shorter filter is required)
  • Uni Air-Box Vents. Uni's foam filtered air vents increase the amount of air to the air filter for a better air supply and improved performance. The removable foam element may be cleaned and re-oiled for years of dependable service. For street, dirt and atv applications, 2 or 4 stroke motors. Re-jetting may be required depending on application and number of vents installed. Easy to install, simply drill hole in air box and press in. 6 air vents in a package.
  • Uni Filter - High performance air filter for RZ350. Higher airflow for higher performance. Fit in stock airbox exactly like OEM filter. Longer service intervals, cleans easily with grease-cutting dishwashing detergent; just clean, re-oil and reuse indefinitely. Stop more dirt than paper filters. Uni filter service care kit available here on the site. Made in the U.S.A.
  • Uni Foam Air Filter Care Kit. Includes spray oil and cleaner. For use on all foam type filters.
  • Uni Foam Filter Cleaner in 14.5oz Aerosol can. CleanerÍs powerful agents quickly strip away grease and dirt, yet wonÍt damage air filters. Spray on, let soak in and rinse off. Biodegradable; safe to use on all OEM and performance air filters
  • Uni Foam Filter Oil - 16oz Pour Bottle. Foam filter oil allows maximum airflow while keeping dirt and dust particles out
  • Uni Universal Bulk Filter Foam - Multiple Densities. Sheets of filter foam in several densities for fabricating air filters Perfect for vintage and custom applications.
    • Green Extra Fine Foam 65PPI - 12"x16" x 5/8"
    • Black Fine Foam 60PPI - 12"x16" x 3/8"
    • Red Coarse Foam 40PPI - 12"x16" x 5/8"
    • Black Extra Coarse Foam 30PPI - 12"x24" x 5/8"
  • UNI 2 Stage Pod Filter, for use on stock 28mm carbs found on Yamaha RD250/350/400s and RZ350s. 2 stage filter can be run oiled or dry. Can also be run oiled in single stage by removing outer sleeve.
  • Uni Y-Boot Filter System for RD250/350/400/R5/DS7. Includes genuine Uni foam filter, Genuine Yamaha Y-boot, pvc filter support ring, clamps & hardware for mounting. Also available in low profile with a 4" Uni filter (recommended for RD250 and other applications where a shorter filter is required)