This is a performance induction kit for the BMW N54 335i and 135i. This is a twin cone intake kit that replaces the OEM restrictive air box. Features This intake kit has proven to add 35.7bhp to our Stage 2 BMW 335i N54, by removing the stock air box jumped up to 430bhp from 393.6 bhp during our dyno runs. Ramair foam filters are known for their clean and smooth induction tone often desired by performance car owners. What Does It Do? Ramair SR induction kits are designed to eliminate the major sources of air flow restriction that your vehicle experiences from the factory intake system. Ramair guarantees that by replacing your restrictive OEM intake system with an aftermarket Ramair component you will see an increase in power and throttle response. The filters are designed to achieve high, almost unrestricted air flow while maintaining filtration levels critical to ensure the longevity of your engine. What Will I Get? Ramair Filters utilise the top-quality components in all their kits see below for what this kit will include: 2 twin layer cone filters Black silicone inlet pipes Full fitting kit with nuts, bolts and brackets Easy to follow step by step instructions If you have any queries on product fitment then please contact us via 01793 296 342 or on our live chat and one of our brand associates will be more than happy to assist.