UNI filters are high flow 2 stage air filters that provide excellent filtering capacity.  The 2 stage design traps particles in a progressive manner which smooths air flow before it enters the carburetor.  The metal spring internal support prevents filter collapse under high vacuum conditions.  UNI filters are cleanable and re-usable, you'll never need another filter.

The UNI UP-4125ST filter has the following dimensions

• 3.5" (89mm) overall OD
• 1.25" (31.75mm) inlet ID
• 3" (76mm) installed height
• 0° straight inlet, no angle  

Both stages of the filter should be pre-oiled before use, use only foam filter oil made specifically for foam style air filters.

We carry ALL genuine UNI Filter products. They are available at everyday low pricing, if you don't see your product listed please inquire for availability.