Vehicle Fitment

• 2006–2011 Honda Civic Si (Coupe FA5, 2.0L K20Z3 I4, FWD)
• 2007–2011 Honda Civic Si (Sedan FG2, 2.0L K20Z3 I4, FWD)
• 2008 Honda Civic Si Mugen Si (Sedan, 2.0L K20Z3 I4, FWD)

Fitment Notes

• Complete front and rear axle kit — full 4-wheel brake upgrade in one box
• Fits 8th gen Civic Si only — does not fit EX, LX, or other non-Si 8th gen Civic trims (those use different rotor sizes; see K2385 for EX/EX-L)
• Does not fit 2004–2005 Honda Civic Si EP3 hatchback — that generation uses a different, smaller front rotor
• 5-lug bolt pattern (5×114.3mm / 5×4.5 in.) — front and rear
• No special modifications required — direct bolt-on installation

Features

• Z23 Carbon-Fiber Ceramic pad compound delivers enhanced stopping power and lower dust versus factory pads — front and rear
• Drilled & slotted rotors at both axles maximize heat dissipation and clear gas and debris from the friction surface
• Low-dust formula validated through on-vehicle third-party testing — 30% less dust on average versus OE
• Dual-layer high-temp rubberized shims provide virtually silent braking
• Silver zinc dichromate plated rotors resist rust and corrosion
• G3000 grade iron castings built to strict OE tolerances for crack resistance and durability
• Includes premium stainless-steel installation hardware and high-temp ceramic brake lubricant
• Bolt-on upgrade — no modifications needed

Specifications

• Kit Coverage: Front & Rear (Complete 4-Wheel)
• Front Rotor Outside Diameter: 11.81 in. (300 mm)
• Front Rotor Type: Vented
• Rear Rotor Outside Diameter: 10.24 in. (260 mm)
• Rear Rotor Type: Solid
• Surface Type: Drilled & Slotted
• Rotor Finish: Silver Zinc Dichromate Plated
• Stud/Lug Hole Quantity: 5
• Bolt Circle Diameter: 5×114.3 mm (5×4.5 in.)
• Pad Compound: Z23 Carbon-Fiber Ceramic
• Pad Shims Included: Yes — Dual-Layer Rubberized

Included Components

• 2x Front Drilled & Slotted Zinc-Plated Brake Rotors
• 2x Rear Drilled & Slotted Zinc-Plated Brake Rotors
• 1x Front Z23 Carbon-Fiber Ceramic Brake Pad Set (with rubberized shims & hardware)
• 1x Rear Z23 Carbon-Fiber Ceramic Brake Pad Set (with rubberized shims & hardware)
• 1x Stainless-Steel Installation Hardware Kit
• 1x High-Temperature Ceramic Brake Lubricant

Product Description

The PowerStop K2440 Z23 Evolution Sport Front & Rear Brake Kit is a complete 4-wheel brake upgrade for the 2006–2011 Honda Civic Si — everything ships in one box. The Z23 Carbon-Fiber Ceramic pads deliver improved stopping power and significantly less dust than factory pads at both axles, while the drilled and slotted rotors keep brake temperatures in check during spirited canyon runs and the K20Z3's full rev range.

G3000 grade iron rotors are precision-cast to OE tolerances for a direct bolt-on fit with no modifications. This kit is specifically for the 8th gen Civic Si (FA5 Coupe and FG2 Sedan). Non-Si 8th gen Civic trims with rear disc brakes use a different front rotor size — see K2385. For a front-only Si upgrade, see PowerStop K2439. For a higher-output Z26 Street Warrior option, see K2440-26.