PowerStop K2439-26 Front Z26 Brake Kit Acura RSX Type-S 2002-2006 / Civic Si

Vehicle Fitment

• 2002-2006 Acura RSX Type-S (2.0L K20A2 I4, FWD)
• 2006-2011 Honda Civic Si (Coupe, 2.0L K20Z3 I4, FWD)
• 2007-2011 Honda Civic Si (Sedan, 2.0L K20Z3 I4, FWD)
• 2008 Honda Civic Si Mugen Si (Sedan, 2.0L K20Z3 I4, FWD)

Fitment Notes

• Front axle kit only - does not include rear rotors or pads; pair with PowerStop K1243-26 or K2441-26 for a complete front and rear Z26 upgrade
• Fits Acura RSX Type-S and Honda Civic Si (8th gen FA5/FG2) only - these share the larger 300mm front rotor platform
• Does NOT fit the Acura RSX Base - the RSX Base uses a smaller 262mm front rotor; see K2386-26 for that fitment
• Does NOT fit 2004-2005 Honda Civic Si EP3 hatchback - that generation uses a 262mm front rotor; see K2386-26
• 5-lug bolt pattern (5x114.3mm / 5x4.5 in.)
• No special modifications required - direct bolt-on installation

Features

• Z26 Street Warrior Carbon-Fiber Ceramic pad compound delivers superior stopping power for high-performance street driving - higher brake torque and outstanding thermal stability versus Z23
• Drilled & slotted vented front rotors maximize heat dissipation and clear gas and debris from the friction surface
• Z26 friction compound resists fade up to 1,500°F - ideal for the RSX Type-S and Civic Si's high-revving K-series engines
• Low-dust formula for cleaner wheels without sacrificing pad bite
• Stainless-steel shims provide heat dissipation and noise-free 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 Only
• Front Rotor Outside Diameter: 11.81 in. (300 mm)
• Rotor Construction: Full Cast Iron - G3000
• Rotor Type: Vented
• Surface Type: Drilled & Slotted
• Rotor Finish: Silver Zinc Dichromate Plated
• Stud/Lug Hole Quantity: 5
• Bolt Circle Diameter: 5x114.3 mm (5x4.5 in.)
• Pad Compound: Z26 Street Warrior Carbon-Fiber Ceramic
• Pad Shims Included: Yes - Stainless-Steel

Included Components

• 2x Front Drilled & Slotted Zinc-Plated Brake Rotors
• 1x Front Z26 Street Warrior Carbon-Fiber Ceramic Brake Pad Set (with stainless-steel shims & hardware)
• 1x Stainless-Steel Installation Hardware Kit
• 1x High-Temperature Ceramic Brake Lubricant

Product Description

The PowerStop K2439-26 Z26 Street Warrior Front Brake Kit is a high-performance front brake upgrade for the 2002-2006 Acura RSX Type-S and the 2006-2011 Honda Civic Si (8th gen FA5/FG2). The Z26 Street Warrior Carbon-Fiber Ceramic pads deliver a consistently higher brake torque and superior thermal stability versus Z23 pads - making them the right choice for drivers who push their K-series-powered cars hard on canyon roads or enjoy occasional track days.

Drilled and slotted vented front rotors are cast from G3000 grade iron to OE tolerances for a direct bolt-on fit with no modifications. This kit is specifically for the RSX Type-S and 8th gen Civic Si, which share the larger 300mm front rotor. The RSX Base and 2004-2005 Civic Si EP3 use a 262mm rotor and require K2386-26 instead. For a complete front and rear Z26 upgrade, pair with the PowerStop K1243-26 rear kit.