Trask Performance Assault Series Air Cleaner Kit Chrome 963388 Chrome. High flow design with a high flow filter element allowing for all the potential power that Trask Performance is known for. Offers 8-10 HP increase over stock with nothing to hide, as can clearly been seen through the Lexan window. Optional & replacement parts: – See 963379 for the optional rain sock – See 963378 for the stock replacement Assault filter element – See 963382 (chrome) or 963381 (matte black) 1 (2.5cm) taller Trask Big Power air filter conversion kit for even more air flow 91-20 XL Sportster. We will accept your request at our earliest opportunity. This includes Republic Of Ireland. Please do not ask us to lower the value of goods this is illegal and we do not want to get involved in this kind of activity.