Brand New PROMINI PERFORMANCE INTAKE never used in box. Promini Performance Intake adds up to a 12.9 hp increase.
This super high flow air filter replaces the large, bulky factory assembly. The increased flow capacity offers a crisper throttle response and better top end performance. Kit includes a high volume reusable Promini air filter and all the required brackets and hardware for a secure fit. Brand new in box, for a Cooper S. Asking $125 obo.

Also, I have a PROMINI Stress Bar Brand New in Box Never Used. ProMini Stress Bar. The ProMini stress bar is a great addition to your Cooper S. The bar is manufactured from light weight, aircraft polished aluminum. The bar offers maximum stiffness derived from the direct tower-to-tower design. Asking $175 obo.