GiroDisc A2-047 Slotted 2-Piece Rear Rotors for 2008-2015 Mitsubishi Lancer Evo

Vehicle Fitment

• 2008-2015 Mitsubishi Lancer (Evolution X) - rear axle, OEM rear calipers & rotor setup

Features

• 2-piece floating rotor design - cast-iron rotor ring + 6061-T6 aluminum hat for reduced unsprung and rotational mass
• Slotted & vented disc surface - enhances pad bite, helps evacuate pad-gases and debris, and improves wet-weather braking performance
• Curved-vane internal ventilation - draws cooling air through the hub to dissipate heat more effectively under heavy braking
• Floating-mount system using high-strength alloy steel drive pins with cadmium-plating for corrosion resistance, plus anti-noise spring washers - allows thermal expansion and self-centering without cold-start rattle
• Direct bolt-on replacement - works with OEM rear calipers and hubs; no machining or modification required
• Reduced unsprung & rotating mass compared to stock - improves suspension response, braking modulation, and rear-end stability under braking
• Re-useable hat design - when rotor rings wear out or warp, you can replace only the rings instead of the full rotor assembly
• Made in USA from high-quality aluminum hats and proprietary high-carbon cast-iron rings - built for durability, performance, and longevity

Specifications

• Part Number: A2-047
• Rotor Type: 2-Piece Floating Rear Rotors (slotted & vented)
• Material: Cast-iron rotor ring + 6061-T6 aluminum hat (anodized) with floating-hat hardware
• Mounting: Floating-mount system with alloy-steel drive pins, cap screws, and anti-noise washers
• Sold As: Pair (left + right rear rotors with hardware)
• Compatibility: Direct replacement for rear axle of 2008-2015 Mitsubishi Lancer Evo X with stock rear calipers

Included Components

• 2x Rear brake rotors (left + right), 2-piece slotted & vented design
• Floating-mount hardware (drive pins, anti-noise washers, cap screws/bolts) for installation

Product Description

The GiroDisc A2-047 rear rotor set is a high-performance upgrade designed specifically for the rear brakes of 2008-2015 Mitsubishi Lancer Evolution X. By replacing the stock rear rotors with a floating 2-piece design - combining a cast-iron rotor ring and lightweight aluminum hat - A2-047 reduces unsprung and rotational mass. This reduction improves rear suspension responsiveness, braking modulation, and stability under braking - particularly useful for spirited driving or track-day use.

The slotted and vented disc surface, coupled with curved-vane internal ventilation, helps dissipate heat rapidly and purge pad-gases or debris under repeated braking or heavy use, reducing the chance of brake fade and improving consistency. The floating-mount hardware accommodates thermal expansion while ensuring the rotor remains centered and free of noise or vibration. Because the hat is reusable, long-term maintenance is more cost-effective - when the rotor rings reach service limit, only the rings need replacement. A2-047 offers Evo X owners a robust, durable, and performance-ready rear braking solution without altering brake bias, calipers, or requiring extensive modifications.