Description
The Group A RX7 FC RE-Spec Rear Diffuser is a purpose-built aerodynamic rear diffuser for the Mazda RX-7 FC3S (1985–1992), inspired by RE Amemiya motorsport styling. Mounted beneath the rear bumper, this diffuser manages underbody air extraction, accelerating the air exiting from beneath the car to reduce rear lift and improve high-speed stability — a critical upgrade for FC3S owners running track days or spirited canyon driving.
Constructed from fiberglass with a clean, functional profile, the RE-Spec diffuser integrates naturally with the FC3S rear bumper and can be painted to match or finished in a contrasting color for a motorsport two-tone look.
- RE-Spec rear diffuser for Mazda RX-7 FC3S (1985–1992)
- Reduces rear lift — improves high-speed aerodynamic stability
- RE Amemiya-inspired multi-channel design
- Fiberglass construction — lightweight and strong
- Supplied raw for body prep, primer, and paint
- Mounts beneath factory FC3S rear bumper
- Handcrafted in Southern California
Fits: Mazda RX-7 FC3S (1985–1992). Call (626) 808-4168 or visit 2815 Pomona Blvd, Pomona, CA 91768.



