1990-1991 Diffuser Brackets Bring track-inspired performance and quality craftsmanship to your build with the 1990-1991 Diffuser Brackets by R Theory Motorsports. Designed for enthusiasts who demand function, form, and reliability, this component is engineered to integrate cleanly with your chassis and stand up to hard driving. Key Features High quality materials and precise manufacturing from R Theory Motorsports Optimized design for improved performance and durability Vehicle-specific fitment for a clean, OEM+ style install Compatible with both spirited street driving and track days Pairs well with other R Theory aero, chassis, and suspension components Typical Use & Application This Rear Diffuser is ideal for drivers who want a functional upgrade that also elevates the look of their vehicle. It is a popular choice among Miata and track-focused builds, time-attack cars, and dedicated weekend warriors. StaticStore x R Theory Motorsports Authorized R Theory Motorsports dealer Genuine R Theory parts only – no knockoffs Backed by the StaticStore customer support team Secure checkout and hassle-free returns policy Shipping & Lead Time Most R Theory Motorsports products are built in small batches. Typical lead times are 1–3 weeks depending on inventory. If you are on a tight deadline, contact us before ordering and we can confirm current stock and ETA.