{"product_id":"rgr-fspe-ultra-na-nb-rear-diffuser","title":"RGR \/ FSPE \"ULTRA\" NA\/NB Rear Diffuser","description":"\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eRGR \/ FSPE \"ULTRA\" NA\/NB Rear Diffuser\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003eFitment:\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003e- 1989-1997 NA Miata \u003cbr\u003e- 1999-2005 NB Miata\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned, engineered, and fabricated in collaboration with FSPE \u0026amp; RGR, our NA\/NB Diffuser is the product of many hours of work and fine-tuning.\u003c\/p\u003e\n\u003cp\u003eWe have taken the original FSPE \"Monstrosity Junior\" and taken it to the next level.\u003c\/p\u003e\n\u003cp\u003eWith the help of CFD and string testing validation, we have managed to design a diffuser that is extremely easy to install without compromising on efficiency.\u003c\/p\u003e\n\u003cp\u003eOur diffuser offers unique solutions like our engineered end plates that separate dirty air coming from the rear tires and create an even low-pressure zone all across the width of the diffuser. Other features include a rear mounting bracket with threaded inserts that allows the diffuser to be installed in 3 easy steps, and the ability to adjust the height of the diffuser so it can work with cars with a variety of rear bumpers.\u003c\/p\u003e\n\u003cp\u003eOur diffuser offers bolt-on, adjustable downforce like nothing else on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eAvailable Finish\/Material\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eRaw Aluminum\u003c\/b\u003e - CNC Cut, rolled, assembled, will have surface scratches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowder Coated Black Aluminum\u003c\/strong\u003e: Same as raw, but powdered black!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eAerodynamic Benefits\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eDesigned to stabilize and smooth airflow just behind the car resulting in:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReduced drag\u003c\/li\u003e\n\u003cli\u003eImproved high-speed stability\u003c\/li\u003e\n\u003cli\u003eDownforce gains\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRear Diffuser\u003c\/li\u003e\n\u003cli\u003eMounting Brackets\u003c\/li\u003e\n\u003cli\u003eMounting Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eInstructions \/ Packing List\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e- NA Miata can be found by clicking \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/9745\/8491\/files\/Mazda_Miata_NA_Rear_Diffuser_FSPE_x_RGR_Installation_Instructions_bb78f215-31dc-4e6e-a5b1-fd2dc39764ed.pdf?v=1725041892\" title=\"RGR Diffuser NA Miata Installation Instructions\"\u003e\u003cstrong\u003eHERE\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e- NB Miata can be found by clicking \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/9745\/8491\/files\/Mazda_Miata_NB_Rear_Diffuser_FSPE_x_RGR_Installation_Instructions_1_11fc32ed-c7c0-4e08-970f-cceb44765384.pdf?v=1722978090\" title=\"Mazda Miata NA\/NB Diffuser Installation Instructions\"\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eHERE\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RGR Engineering","offers":[{"title":"Raw Aluminum \/ NA Miata (1989-1997)","offer_id":42155617779758,"sku":null,"price":599.99,"currency_code":"USD","in_stock":true},{"title":"Raw Aluminum \/ NB Miata (1999-2005)","offer_id":42195369263150,"sku":null,"price":599.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ NA Miata (1989-1997)","offer_id":42155617845294,"sku":null,"price":699.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ NB Miata (1999-2005)","offer_id":42195369295918,"sku":null,"price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0071\/9745\/8491\/files\/rgr-fspe-ultra-nanb-rear-diffuser-2939486.jpg?v=1773508878","url":"https:\/\/www.fsperformanceengineering.com\/products\/rgr-fspe-ultra-na-nb-rear-diffuser","provider":"FSPE","version":"1.0","type":"link"}