EBC GD434 GD Sport Slotted Rear Brake Rotors for 86-91 Mazda RX-7 FC3S Turbo II

Vehicle Fitment

• 1986-1988 Mazda RX-7 Turbo II (FC3S Series 4, 1.3L 13B-T Turbocharged Rotary, RWD) - Rear Axle
• 1989-1991 Mazda RX-7 Turbo (FC3S Series 5, 1.3L 13B-T Twin-Scroll Turbo Rotary, RWD) - Rear Axle
• 1989 Mazda RX-7 GTUs (FC3S Series 5, 1.3L 13B-DEI N/A Rotary, RWD) - Rear Axle
• 1989-1991 Mazda RX-7 GXL (FC3S Series 5, 1.3L 13B-DEI N/A Rotary, RWD) - Rear Axle
• 1989-1991 Mazda RX-7 Convertible Turbo/GXL (FC3S Series 5, 1.3L 13B Rotary, RWD) - Rear Axle

Fitment Notes

• Fits ONLY FC3S RX-7 variants equipped with vented (not solid) rear brake rotors
• Does NOT fit FC3S base/GTU/GXL Series 4 (1986-1988) with solid rear rotors (use different EBC rotor)
• Does NOT fit 1989 base GTU (solid rear rotors) - only GTUs and Turbo models received the vented rear upgrade
• Does NOT fit first-generation SA22C/FB3S RX-7 (1979-1985)
• Does NOT fit FD3S RX-7 (1993-2002, uses larger 294mm rear rotor)
• Sold as a pair - replaces both left and right rear rotors
• Verify your vehicle has vented rear rotors before ordering (visible through wheel)

Features

• 3GD Series wide-aperture slotted design for improved cooling and pad degassing
• Dimple-drilled (not through-drilled) to eliminate stress crack risk under heat cycling
• Maintains flat and parallel pad wear, eliminating record-groove pad galling
• Silver Geomet anti-corrosion coating for long-lasting appearance and rust protection
• Made from OE-spec grey cast iron with British-machined finish
• 3-slot venting reduces wind noise versus traditional slotted designs
• Precision-machined, balanced, and 100% individually runout-inspected
• Runs up to 100°F cooler than non-slotted rotors per EBC R90 testing
• Pairs with EBC Yellowstuff, Bluestuff, or Greenstuff pads for matched performance

Specifications

• Position: Rear Axle (Pair)
• Diameter: 273mm (10.75 inches)
• Thickness: 20mm
• Height: 54mm
• Bolt Holes: 5
• Center Hole Diameter: 66mm
• Ventilation: Vented (internal)
• FMSI Pad Reference: D332
• Coating: Silver Geomet anti-corrosion finish

Included Components

• 2x EBC GD Sport Series Rear Brake Rotors (Left & Right Pair)

Product Description

The EBC GD434 is a 3GD Series sport performance rear brake rotor pair engineered for second-generation Mazda RX-7 FC3S models equipped with the vented rear brake hardware - primarily the iconic Turbo II of 1986-1988 and the Series 5 Turbo, GTUs, and GXL variants from 1989-1991. These 273mm vented rotors fit one of the most celebrated rotary sports cars of the late 1980s, offering a meaningful upgrade in rear-axle braking consistency, visual appeal, and longevity for a chassis that continues to enjoy strong enthusiast and track-day support.

EBC's signature wide-aperture slotted face combined with blind-drilled dimples provides the visual aesthetic and gas evacuation benefits of drilled rotors without the structural compromises of through-drilling, which can lead to stress cracks under repeated heat cycling. Each rotor is precision-machined from OE-spec grey cast iron, then balanced and individually runout-inspected before release. The silver Geomet corrosion-resistant coating protects non-friction surfaces against rust and complements the visual upgrade behind your RX-7's period-correct alloy wheels. These rotors are sold as a matched left/right rear pair.