Description: - Motorcycle carburetor refit air filter cup. - Universal for major brand carburetors of 21mm/24mm/26mm/28mm/30mm. - Sizes are marked on pictures, please check the pictures carefully to make sure you get the right item. - Material: CNC Aluminium Alloy (Rust Resistant) tandard 50mm Air Filter Interface Cup. Made of premium aluminum alloy material for high durability. Easy installation, direct fit in. Stable characteristics, high reliability. Suitable for 24/26/28/30mm Motorcycle Carburetor. Specification: Condition: 100% Brand New Item Type: Air Filter Interface Cup Material: Aluminium Alloy Optional Color: red, black, silver, blue ,gold Fitness: for 24/26/28/30mm Motorcycle Carburetor Internal Diameter: Approx. 50mm / 2.0inch Size: Approx. 74 * 49mm / 2.9 * 1.9inch Package Includes: 1 Piece Air Filter Cup 3 Pieces Screws Fit For:KEIHIN PWK KOSO OKO MIKUNI 21mm 24mm 26mm 28mm 30mm PE28 30 Carburetor Note: 1 No Instructions Included ,Professional Installation Is Highly Recommended !!!! 2.Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 3.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 4.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding. 5.please note The Compatibility Is Just For Reference. Please Compare With Your Original One Before Purchasing! and we advise buyer check original size than compare with our item size before Purchasing .