Wilwood AERO4 14.00in Slotted Rear Big Brake Kit - BMW 325i/328i (E90/E92) 2006-2013 - Red

Wilwood AERO4 rear big brake kit that replaces the factory rear discs on the BMW E90 325i and 328i while retaining the OE parking brake assembly. The kit pairs forged W4AR four-piston calipers in a red finish with oversized 14.00 inch GT-72 curved-vane slotted rotors and BP-10 compound brake pads, sized to match the OE master cylinder output, ABS function, and vehicle brake bias. It is designed as a rear complement to a Wilwood front big brake upgrade and clears most 18 inch and larger wheels (verify against the wheel clearance diagram). Kit includes calipers, rotors, brackets, pads, and braided stainless steel brake lines.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy