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Cosworth Sport Brake Kit SUBARU IMPREZA

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Part #: 20020704
Notes: Sport Brake Kit
MSRP: $2,352.00
Your Price: $2,335.54
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Calipers 4 Piston
Position Front
Rotors 332 x 32mm

All Fitments

Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2004 - 2007 IMPREZA WRX STI
ALL ALL ALL ALL ALL Fits 5x100 & 5x114.3 Bolt Patterns; Fits Stock Wheels

Product Description

Cosworth Sport brake kit’s feature fully forged calipers for optimal strength and light weight. The bolt in bridge design allows for a super stiff caliper without sacrificing cooling. The end result is better performance with less vibration, noise, and pad taper.

Cosworth 2-piece rotors are designed for 10-30% better airflow than directional vaned racing rotors. They were produced with a proprietary cast iron formula, which was specified with durability in mind. The hats and brackets are made with a special type of billet aerospace aluminum and are CNC machined in the USA to ISO standards.

All parts are bench tested prior to shipment. Each caliper is 100% pressure tested to 2,500 PSI. Every brake line is 100% pressure tested to 4,500 PSI. Every assembled two-piece rotor is tested for runout. Each kit is optimized for specific vehicle application.


  • Bolt-in bridge minimizes caliper compliance
  • 2-piece rotor design allows 10-30% better airflow greatly improving performance
  • 6 Piston Caliper Weight: 4.1 kg (9.02 lbs)
  • 4 Piston Caliper Weight: 3.6 kg (7.94 lbs)
  • 2 Piston Caliper Weight: 2.0 kg (4.4 lbs)
  • 6 Piston caliper uses standard FMSI D1247 pad
  • 4 Piston caliper uses standard FMSI D372 pad
  • 2 Piston caliper uses standard FMSI D961 pad
  • DOT Legal Stainless brake lines with clear abrasion-resistance cover
  • Piston sizes are optimized for each vehicle application to maintain bias
  • Differential piston sizes minimize pad taper for longer pad life and a firmer pedal
  • Dust boots are standard for reduced maintenance
  • All finished parts are 100% leak down and pressure tested

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