EBC RK643 Premium Rear Brake Rotor for 1990-1994 Mazda Miata 1.6L NA

Vehicle Fitment

• 1990-1994 Mazda Miata (NA, Base/LE/SE/M-Edition, 1.6L I4, RWD, Rear)

Features

• OE-style direct replacement rear rotor
• Precision-machined from G3000 grey iron for durability
• Thermic black Geomet anti-corrosion coating
• Solid (non-vented) design matching factory specs
• Balanced and run-out tested for vibration-free ride
• Quiet braking with smooth, plain face
• Compatible with OEM or EBC Ultimax/Yellowstuff pads
• Easy bolt-on installation - no modifications needed

Specifications

• Position: Rear
• Rotor Type: Solid, non-vented
• Outer Diameter: 231 mm (9.1")
• Thickness: 9 mm new, 8 mm minimum
• Bolt Pattern: 4x100 mm PCD
• Center Bore: 54 mm
• Height: 35 mm
• Material: SAE G3000 grey cast iron
• Coating: Thermic/Geomet anti-rust finish

Included Components

• 2x EBC RK643 Rear Brake Rotors

Product Description

The EBC RK643 is a rear brake rotor engineered specifically for the first-generation Mazda Miata (NA) produced from 1990 to 1994. Crafted from premium G3000 grey iron and coated in Thermic/Geomet anti-corrosion finish, these rotors deliver durable, OE-level performance ideal for both stock and lightly modified street Miatas.

Precision balancing and tight run-out tolerances ensure smooth, vibration-free braking, while the plain, solid rotor design offers quiet operation without the noise of slotted or drilled alternatives. With exact-fit bolt pattern (4x100 mm), center bore, and material specs matching factory rotors, installation is hassle-free - just bolt on and go. Ideal for enthusiasts seeking reliable, long-lasting rear braking performance on track or road.