50 Caliber Racing 1.35" (32-36mm) Performance Mesh Air Filter for Honda and Other Pit Bikes CRF50 XR50 Z50 [5102] Brand new 1.35" Performance Air Filter - fits 32 - 36mm Carburetor Inlet High flow filter - Mesh Design - Cleanable Flows more air than stock Add a custom look to your Honda CRF50 XR50 or other pit bike 50 Caliber Racing - Free Shipping to USA - 30 Day Warranty