Brembo 09.B338.21 Rear UV Coated Rotor 300mm for 04-15 BMW 1/3/X1

Vehicle Fitment

• 2004-2015 BMW 3-Series (Rear Brake Rotor, E90/E91/E92/E93)
• 2006-2013 BMW 1-Series (Rear Brake Rotor, E81/E87)
• 2009-2015 BMW X1 (Rear Brake Rotor, E84)

Features

• Premium UV-coated vented rear brake rotor for corrosion resistance
• High-carbon cast iron construction for durability and heat control
• Vented design promotes effective cooling under braking
• OE-equivalent direct replacement engineered to match OEM specs
• Balanced rotor design helps reduce vibration and noise
• UV surface coating enhances resistance to rust and environmental wear
• Includes fixing screw hardware kit for easy installation
• Designed for daily driving and reliable braking performance

Specifications

• Brand: Brembo
• Part Number: 09.B338.21
• Series: Premium UV Coated Series
• Position: Rear axle
• Rotor Diameter: 300 mm
• Nominal Thickness: 20 mm
• Minimum Thickness: 18.4 mm
• Height: 66 mm
• Centering Diameter: 75 mm
• Number of Holes: 5 lug
• Tightening Torque: Vehicle OEM spec
• Material: High-carbon cast iron

Included Components

• 1x Brembo 09.B338.21 rear brake rotor (sold individually)
• 1x Fixing screw hardware kit

Product Description

The Brembo 09.B338.21 Premium UV Coated Rear Brake Rotor is engineered as a direct replacement for worn rear rotors on select BMW 1-Series, 3-Series (E90/E91/E92/E93), and X1 (E84) models. Its vented design and high-carbon cast iron construction help dissipate heat effectively, reducing the risk of brake fade and ensuring consistent performance during everyday driving. The UV-coated surface provides superior corrosion protection, maintaining both appearance and long-term durability.

Designed to meet or exceed original equipment standards, this rotor installs easily with the included fixing hardware and requires no modifications to the existing brake system. Whether replacing aged factory rotors during routine maintenance or upgrading to a premium option for improved reliability, the Brembo 09.B338.21 delivers dependable braking performance and smooth operation. For best results, rotors and brake pads should be replaced together to maximize stopping power and brake feel.