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Keller Performance

Keller Performance F9X M5/M8 Downpipes/Midpipes

Regular price $1,399.99 USD
Regular price Sale price $1,399.99 USD
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Keller Performance high flow downpipes and midpipes are made to eliminate exhaust flow restriction for maximum Horsepower and Torque gains. Manufactured with the highest grade T304L stainless steel, 3D scanned for 100% guaranteed fitment and best performance on the market.

  • Improves Sound
  • Adds Horsepower and Torque
  • Reduces Weight


2018+ BMW M5 (F90) All Variants
2020+ BMW M8 (F91/F92/F93) All Variants


These products are designed and sold for OFF ROAD / RACE USE only. They are not 50 state legal, they are not CARB certified and they are not allowed for use on emission-controlled vehicles.