IDA K & N air filter adapter 50mm Bores https://www.efihardware.com/products/172/IDA-K-N-air-filter-adapter
Adapting plate enables fitment of IDA K&N air filler assembly to 50mm IDA throttle body.
Requires 831-050SK Ram tube and base in place of standard or high flow ram tubes to fit in side K&N Element.