GiroDisc A1-166 2-Piece Slotted Front Rotors for Honda Civic Type R / FK2-FK8-FL

Vehicle Fitment

• Honda Civic Type R FK2 (2015-2017)
• Honda Civic Type R FK8 (2017-2021)
• Honda Civic Type R FL5 (2022-present)

Features

• 2-piece floating rotor design - aluminum hat + cast-iron disc ring to reduce unsprung & rotational mass
• Slotted and vented rotor surface for improved pad bite, gas/debris purging, and fade resistance under heavy braking
• Curved-vane internal ventilation - acts like a centrifugal pump to pull cooling air through the rotor under load
• Floating-mount system using high-strength alloy drive pins with anti-noise spring washers - allows thermal expansion and eliminates cold-start rattle
• Lightweight: approx. 21.1 lb per rotor vs ~24.6 lb OEM - reduces unsprung & rotating mass for sharper handling and throttle response
• Direct bolt-on replacement - installs with OEM calipers and mounting points, no modifications required
• Maintain factory brake bias and ABS system - no need for larger calipers or brake system overhaul
• Replaceable disc-ring design - when rings wear or warp, you can replace only the ring instead of the full rotor set

Specifications

• Part Number: A1-166
• Rotor Type: 2-piece floating, slotted & vented front rotors
• Hat Material: 6061-T6 aircraft-spec aluminum
• Disc Ring Material: Proprietary cast iron
• Rotor Weight: ~21.1 lb each (lighter than stock)
• Mounting: Floating mount with alloy pins + anti-noise spring washers
• Finish: Slotted, vented iron disc + machined aluminum hat
• Sold As: Pair (front left + right) with floating hardware

Included Components

• 2x Front brake rotors (left + right), 2-piece floating design
• Floating-mount hardware (drive pins, washers, necessary fasteners)

Product Description

The GiroDisc A1-166 rotors are a high-performance, direct-fit upgrade designed specifically for Honda Civic Type R models (FK2, FK8, FL5). By replacing the heavier OEM rotors with a floating, two-piece design featuring an aluminum hat and proprietary cast-iron disc ring, these rotors reduce unsprung and rotational weight - leading to improved suspension response, sharper steering feel, and more responsive braking behavior, particularly under aggressive driving or track use.

With slotted and vented rotor surfaces and a curved-vane internal cooling design, A1-166 helps dissipate heat rapidly and purge pad gasses and debris - reducing brake fade and maintaining consistent stopping power under repeated heavy braking. The floating-mount system allows thermal expansion without warping, while anti-noise washers prevent unwanted noise during cold starts. Installation is straightforward - the rotors bolt onto OEM hubs and work with factory calipers and pads, preserving brake balance and ABS function. For Civic Type R owners seeking better braking performance, lighter unsprung mass, and track-ready reliability without a full big-brake kit, A1-166 is a highly effective upgrade.