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

The Wilwood AERO4 Big Brake Rear Axle Kit replaces the factory rear disc brakes on the BMW E90 325i and 328i while retaining the OE parking brake assembly, pairing with a front big brake upgrade. It uses forged AERO4 four-piston calipers in a red finish, BP-10 compound pads, and oversized 14.00 in. x 1.10 in. SRP drilled and slotted rotors, all sized to work with the OE master cylinder output, ABS function, and vehicle brake bias. Braided stainless steel brake lines are included.

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