Powerstop Z23 Evolution Sport Brake Kit - Front & Rear - BMW 525xi/528i/530xi

Product Details

For those focused on longevity and fitment, the K5439 kit provides a "no-guesswork" installation. Every rotor is silver-zinc plated to combat the rust that often plagues untreated iron components, especially in humid or salt-prone climates. This kit is built to maintain a "new car" look behind your wheels while providing the mechanical reliability needed for spirited commuting.

Key Features

• Rust-Resistant Finish: All rotors are silver zinc dichromate plated to prevent oxidation and maintain a clean appearance.

• Premium Hardware Included: Comes with all necessary stainless-steel clips and high-temperature brake lubricant for a professional install.

• Mill Balanced: Every rotor is 100% mill-balanced to ensure smooth operation and prevent steering wheel vibration.

• Bolt-On Fitment: Designed to fit within the tolerances of stock BMW 5-Series calipers—no modifications required.

• Multi-Layer Shims: Features premium rubberized shims that outperform standard steel shims in dampening vibration.

Specifications

• Front Rotor Thickness: 30mm (Nominal) / 28.4mm (Minimum)

• Rear Rotor Thickness: 19.9mm (Nominal) / 18.4mm (Minimum)

• Rotor Type: Vented (Front and Rear)

• Hardware Material: Premium Stainless Steel

• Fitment: 2006–2010 BMW 5-Series (525xi, 528i, 530xi, 535i xDrive)

• Hub Hole Diameter: Front 79mm / Rear 75mm

• Warranty: 3-Year / 36,000-Mile Limited Warranty

Prop 65 Warning

Product Q&A

Lifetime Replacement

Fits These Cars