PowerStop KC2270A Z23 Rear Brake & Caliper Kit Acura RSX / Civic Si

Vehicle Fitment

• 2002-2006 Acura RSX Base (2.0L I4, FWD)
• 2002-2006 Acura RSX Type-S (2.0L VTEC I4, FWD)
• 2004-2005 Honda Civic Si (2.0L i-VTEC I4, FWD) - rear disc brake models only

Fitment Notes

• Rear axle kit with replacement calipers - includes red powder-coated rear calipers for a bold visual upgrade alongside the performance brake components
• Honda Civic fitment is 2004-2005 Si trim only - standard Civic (LX, EX, DX) in those years used rear drum brakes and is not compatible
• Both RSX Base and RSX Type-S share the same rear rotor size and bolt pattern - both are fully covered by this kit
• For a complete front and rear caliper kit on the RSX platform, pair with the appropriate front caliper kit
• For a rear kit without replacement calipers, see K2270
• 5-lug bolt pattern (5x114.3mm / 5x4.5 in.)
• No special modifications required - direct bolt-on caliper replacement with included hardware

Features

• Z23 Carbon-Fiber Ceramic pad compound delivers enhanced stopping power and lower dust versus factory pads
• Red powder-coated replacement rear calipers provide a bold visual upgrade and extended corrosion resistance - a factory-fresh look behind your wheels
• Drilled & slotted solid rear rotors 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, pin bushing kit, and high-temp ceramic brake lubricant
• Bolt-on caliper replacement - no modifications needed

Specifications

• Kit Coverage: Rear Only (with Replacement Calipers)
• Rear Rotor Outside Diameter: 10.20 in. (259 mm)
• Rotor Construction: Full Cast Iron - G3000
• Rotor Type: Solid
• 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: Z23 Carbon-Fiber Ceramic
• Pad Shims Included: Yes - Dual-Layer Rubberized
• Caliper Finish: Red Powder-Coated
• Calipers Included: 2x Rear (Driver & Passenger)

Included Components

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

Product Description

The PowerStop KC2270A Z23 Evolution Sport Rear Brake & Caliper Kit is the rear brake and caliper upgrade for the 2002-2006 Acura RSX (Base and Type-S) and 2004-2005 Honda Civic Si. The kit bundles Z23 Carbon-Fiber Ceramic pads, drilled and slotted solid rear rotors, and red powder-coated replacement rear calipers - delivering improved stopping power, less dust, and a bold visual upgrade in one package. G3000 iron rotors are precision-cast to OE tolerances for a direct bolt-on fit.

Honda Civic fitment is Si trim only - standard Civic trims with rear drum brakes are not compatible. For a rear kit without replacement calipers, see K2270. For the Z26 Street Warrior caliper version of this rear kit, see KC2270A-26.