This rear BBK adapter is a precision-engineered solution for mounting Wilwood Forged Superlite rear calipers to the factory rear knuckle on the FD3S RX-7. It is not a universal bracket or generic conversion — every critical dimension is designed around a known Wilwood caliper and OEM-based rotor configuration to ensure proper caliper alignment, pad sweep, and rotor centering.
Machined from 7075-T6 aluminum, bead blasted, and finished in a gloss black anodize, this adapter delivers durability, corrosion resistance, and a clean OEM-plus appearance suited for off-road and competition use.
⚠ This product is intended for off-road use only.
Key Features
Vehicle-Specific Design – Engineered specifically for the FD3S RX-7 rear knuckle
Wilwood Superlite Compatibility – Designed around Wilwood Forged Superlite rear calipers
OEM-Based Rotor Configuration – Developed using RX-8 Sport Suspension front rotors
Premium Construction – CNC-machined from 7075-T6 aluminum
Durable Finish – Bead blasted and gloss black anodized
Mounting Hardware Included – All required adapter mounting hardware supplied
What’s Included
(2) Rear BBK adapters (one vehicle set)
All required mounting hardware
Fitment & Requirements
Vehicle: Mazda RX-7 FD3S (1992–2002)
Designed for use with Wilwood Forged Superlite rear calipers and an RX-8 Sport-based rear rotor configuration
This setup deletes the factory rear parking brake
Specific component part numbers, rotor options, brake line requirements, and installation considerations are outlined in the technical guide and FAQ.
Parking Brake Information
⚠ This setup deletes the factory rear parking brake.
This adapter is intended for off-road and competition vehicles where the OEM drum-style parking brake is not retained. Vehicles requiring a parking brake must utilize an alternative solution, which is not included.
Important Notes
Off-road use only
Brake lines, calipers, pads, rotors, and fittings are not included
Designed around specific components detailed in the technical guide
Compatibility with unlisted components is not guaranteed
Professional installation recommended
Technical Guide Available
Looking to piece together a complete rear brake setup?
A detailed technical guide is available covering verified components, rotor options, brake line requirements, and installation considerations for this configuration.
