We designed flow-optimized and perfectly fit downpipes, that utilize OEM split design. You can install secondary cat delete pipes with OEM primary catalytic converters and get more aggressive sound without "check engine" light. Or choose our primaries with High Flow low cell catalytic converters or go with the ultimate full catless setup for maximum performance.

Compatible Vehicles:

• 2017- BMW M5 F90 all models 4.4 L S63 twin-turbocharged V8
• 2019- BMW M8 F91/F92/F92 all models 4.4 L S63 twin-turbocharged V8

Available options:

• HJS Ultra High-Performance 200cpsi Euro 5 HD matrix catalytic converters. Made in Germany most reputed high flow converters for their outstanding characteristics, quality and durability.>> Read more about HJS cats.
• GESI GEN2 400cpsi 5in core 1000hp/each rated Metal Core Catalytic Converters. Made in Canada. New GEN2 series provides a significant improvement in exhaust flow over stock and offers the latest emissions technology for model year 2017 and newer. EPA Compliant catalytic converters have been third-party lab tested to meet or exceed local emissions standards in North America (excluding California) and will address Check Engine light issues with proper engine setup. Read more about G-Sport by GESI cats.
• GESI GEN1 300cpsi high-flow Metal Core Catalytic Converters. Rated 500-850hp each. Made in Canada. EPA certified for use on OBD2 vehicles (1996 and newer) 49 States. 
• Double-layer heat shielding is used to protect surrounding parts, wires, and hoses against radiant heat from the downpipes.
  Integrated thermal insulation reduces surface temperature up to 70%! What makes it an absolute winner, compared to usual thermal wrapping or ceramic coatings.
  It’s very important not just for safety reasons but also affects engine performance by reducing the underhood temperature. We highly recommend this option, especially for catted downpipes.

Main Features:

• Significant power gain
• Faster spool up and better throttle response
• Increasing the life of the turbos 
• Reducing under hood temperature
• Adds a very nice tone to the exhaust
• 100% bolt-on installation
• 100% TIG welded and back purged
• Highest quality 1.6mm wall 304 stainless steel
• OEM-spec V-band flanges
• All brackets and mounts as on OEM unit

Why Buy Our Products?

  You buy directly from the manufacturer and all the products 100% handmade in Russia.
  We don't compromise on quality! No mild steel flanges, no weak clamp joints, no other cost reduction tricks.
  Free flow is our priority! No steps and restrictive areas, only smooth transitions, bigger diameters, and optimized design.
  Our welds and whole craftsmanship better than most of the competitors. Pictures speak for themselves.
  5-year warranty against any defects given to the original owner.

Notes:

Removing of factory catalytic converters will trigger a сheck engine light. Firmware update recommended to get maximum performance gains.