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Celebrating 250 Years of American Freedom, All Year Long! More Horsepower. More Burnouts.
Celebrating 250 Years of American Freedom. More Horsepower. More Burnouts.
Hawk ER-1 Race Brake Pads for Compatible Wilwood Motorsport Calipers - HB521D.650
Hawk ER-1 Race Brake Pads for Compatible Wilwood Motorsport Calipers - HB521D.650
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Hawk ER-1 Race Brake Pads for Compatible Wilwood Motorsport Calipers - HB521D.650

by Hawk Performance
Special Order Item: This item is not stocked in-house and may require additional processing time before shipping. Details
Special Order Save 10% Save 10%
$276.99
$276.99 - $276.99
$276.99
$249.29
$249.29 - $249.29
$249.29

Hawk ER-1 race brake pads for compatible Wilwood motorsport calipers using the HB521 pad shape.

Verify the exact caliper and required .650-inch thickness before ordering.

ER-1 Compound

Endurance racing compound designed for stable brake torque, modulation and long service life.

  • Caliper-specific pad set
  • Hawk part number: HB521D.650

Important: Expect increased noise, dust and rotor wear.

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