Air Filters

  • 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.
  • Uni Y-Boot Filter System for RD250/350/400/R5/DS7 & RZ350. Includes genuine Uni foam filter, New reproduction Y-boot, pvc filter support ring, clamps & hardware for mounting. Also available in low profile with a 4" Uni filter.
  • Uni Foam Air Filter Care Kit. Includes spray oil and cleaner. For use on all foam type filters.
  • Uni Y-Boot Filter System for RD250/350/400/R5/DS7. Includes Genuine 5" Uni foam filter, Genuine OEM Yamaha Y-boot, pvc filter support ring, clamps & hardware for mounting. Also available in low profile with a 4" Uni filter. The difference between this and the less expensive version is the rubber boot itself, this version uses a genuine Yamaha rubber boot.
  • 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"
  • 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. 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.
  • 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 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.
  • Y-boot Adaptors for Larger Mikuni Carburetors
    • Install a Y-boot Filter kit on your Yamaha RD with Larger Carburetors
    • Increase performance by reducing turbulance generated from pod filters
    • Adapts our Y-boot filter kit to fit the larger aftermarket Carbs with a 58mm inlet housing
      • Mikuni VM30-34
      • Mikuni TM32-34
      • Includes 2 adaptors and 2 clamps
    • Made from Aluminum. In Lincoln NE, USA
    • Sold as a pair
  • RZ350/Banshee Air Box Clamp (secures boot (joint) to air box) 90460-68230-00 Reproduction. Note this part has a yellow/brass finish much different than the original but works well same dimensions as stock clamp. sold each.
  • 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.