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Quicksilver Sport Stainless Steel Header & Race Cat Mini Cooper S R53|R52|R50 02-06



Model #BM401S

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Shopper Award

This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver here.

Quicksilver Header and Race Cat MINI Cooper S R53, R52, R50 02-07

Quicksilver’s Manifold and ‘Race-Cat’ has four longer tuned-length primaries followed by a single free-ow Catalytic converter. This ‘Cat’ has a microscopically thin Fecralloy metallic core of 200 cpsi to which the essential Platinum and Rhodium are applied at a much greater density (25 grams per cubic foot compared to 10 grams on a typical aftermarket product). This all results in a ow area of approximately 85% whilst remaining clean enough to meet emissions requirements.


  • The Fecralloy metallic core is very durable.
  • Incorporates a triple-wall exible section to a much higher spec than the twin-wall OE ones.
  • Accelerated gas-ow draws heat away more efficiently.
  • Bolt-On fit.
  • The two original lambda sensors are retained.
  • Dyno tests show a 12hp improvement and increased mid range torque.
  • Quicksilver products ship directly from the UK.
  • Item may take up to 4 weeks for delivery.
  • Customers are responsible for all Taxes or Duty Fees.

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Vehicle Engine Notes
Mini Cooper S

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