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The Hawk Performance 08-11 BMW 128i / 10 BMW 323i / 07-11 BMW 328i / 07-11 BMW 328XI DTC-70 Race Rear Brake Pads is a brake pads - racing for the normalized year, make, and model applications shown below. Match manufacturer part number HB621U.638, axle position, pad compound or rotor specification, caliper, factory brake package, and package quantity before ordering.
Key Features
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2008-2013 | BMW | 128i | Confirm axle position, caliper, rotor size, factory brake package, trim, and exact Hawk application |
| 2007-2013 | BMW | 328i | Confirm axle position, caliper, rotor size, factory brake package, trim, and exact Hawk application |
| 2009-2013 | BMW | 328i xDrive | Confirm axle position, caliper, rotor size, factory brake package, trim, and exact Hawk application |
| 2007-2008 | BMW | 328xi | Confirm axle position, caliper, rotor size, factory brake package, trim, and exact Hawk application |
| 2013-2015 | BMW | X1 | Confirm axle position, caliper, rotor size, factory brake package, trim, and exact Hawk application |
Specifications
| Brand | Hawk Performance |
|---|---|
| Manufacturer Part Number | HB621U.638 |
| Product Type | Brake Pads - Racing |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new Hawk Performance brake pads - racing package identified by manufacturer part number HB621U.638, in the axle position and quantity stated by the title. Pads, rotors, fluid, shims, clips, sensors, hardware, and other components are included only when expressly listed for this exact part number.
About Hawk Performance
Hawk Performance develops street, performance, and motorsport brake compounds, vehicle-specific pad sets, Talon rotors, brake kits, and high-temperature brake fluids.
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Frequently Asked Questions
Can I use this Hawk race compound on the street?
Race compounds are designed around elevated operating temperatures and can have more noise, dust, rotor wear, and reduced cold response. Use the compound only for its stated purpose and local requirements.
How do I choose between Hawk race compounds?
Match the compound's torque curve and temperature range to vehicle weight, tire grip, brake bias, rotor capacity, cooling, session length, and driver preference. A brake specialist should review the complete setup.
What should be checked before a track session?
Inspect pad thickness, rotor condition and runout, calipers, hoses, fluid age, pedal feel, fastener torque, cooling, leaks, and front-to-rear compound balance before every event.
Installation Instructions
Follow current Hawk Performance instructions and the vehicle service manual for part number HB621U.638. Support the vehicle safely, inspect calipers and hoses, clean and measure rotor and hub surfaces, use the specified torque procedure, bleed the system when opened, verify pedal operation and clearance, then complete the bedding procedure for the exact pad compound before normal driving.
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