ITEM NAME:New Air Filter Cleaner elements TRX300 TRX300FW TRX400 Foreman B0023 G4U1 New Air Filter Cleaner elements TRX300 TRX300FW TRX400 Foreman B0023 G4U1 Product Name: Automotive air filter Colour: Yellow and black Material: plastic This filter installs using your existing filter cage and hardware into the original air box Factory oiled but we recommend re-oiling as the factory oil is light size: 10.8cm Direct fit for the following models: TRX300 TRX300FW TRX400FW Length: 4.3" (108mm) Outside diameter: 4.5" (115mm) Inside diameter: 2.6" (67mm) Package Contents: 1 x Automotive air filter Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.