U-RP405

100mm/4" Rally Pod. I.D.65mm, O.D. 95mm

Each Filter includes the support spring & cable tie

Uni Filter’s Original “Sock” Air Filters were constructed of green polyurethane foam with no flange or urethane snout. They are available in a variety diameters and lengths to accommodate a variety of carburetors so feel free to CONTACT US for any Uni Filter type you'd like to special order.

Idealy the spring should sit on the end of the bellmouth opening but this is not always possible on motorcycles. In some situations where the chassis has limited space the spring can be fitted over the outside length of the velocity stack. This Filter works very well in this configuration when using the Alloy Trumpet Velocity Stacks that suit Dellorto PHF Carburettors.

Uni Filter entered the air filtration industry in 1971 with a simple concept, “Lets design an air filter that works. And that’s exactly what they did. They chose polyurethane foam as ther air filtration medium, instead of paper or gauze, because of it’s superior dirt capturing capabilities and its capacity to be easily cleaned and reused. And the rest is history. Their original “SOCK” and “POD” air filters took the industry by storm and led to the most comprehensive line of foam air filters in the world!

Here’s how a Uni Foam Air Filter works: “Open Cell” Polyurethane Foam is wetted with specially developed filter oil. The “sticky” filter oil is suspended in the path of the dirty air on the strands of the web-like cell structure of the foam. This makes it impossible for dirt to pass through the depth of the filter without sticking to the strands.
As the outer strands become loaded with dirt particles, the wetted strands down stream start trapping dirt, allowing the entire thickness to be utilized. This prevents surface loading or air restriction for 80% of the service life of the air filter element. When the filter is sufficiently dirty, it can be easily washed, re-oiled, and re-used.

RACE TESTED

Uni Filter products perform their best in the worst of conditions. That’s why Uni has been the chosen air filter of all serious racers for decades. In this dirty, dusty environment, air filtration is extremely critical to the performance and protection of the engine. The Uni Air Filter’s ability to hold extreme amounts of dirt and still provide excellent air flow and performance has made Uni Filter the choice of some of the greatest racers of all time.