Description
RACING LAB · TRACK EXHAUST
Hydroformed 89 mm S58 catless downpipes for competition use
A matched left-and-right pair of 89 mm hydroformed, straight-through 304 stainless-steel downpipes for BMW G80/G81 M3, G82/G83 M4 and G87 M2 competition builds. The one-piece primary tubes provide a continuous exhaust path without segmented pie-cut welds.
89 mm
Main tubes
One-piece
Hydroformed
TRACK ONLY
Catless
Key features
✓Smooth hydroformed routing
One-piece main tubes avoid pie-cut welds in the primary flow path.
✓Matched S58 twin-turbo pair
Left and right downpipes follow the S58's dual turbo outlet layout.
✓304 stainless steel
High-temperature exhaust construction suited to closed-course motorsport applications.
✓Flex sections and sensor locations
Integrated flexible joints and factory-style oxygen-sensor provisions support the intended matching installation.
Design & construction
This competition-focused set replaces the vehicle's primary catalytic converters with unrestricted straight-through main tubes. Hydroforming shapes the 89 mm pipe sections as continuous components, and the integrated flex joints accommodate engine movement in the S58 exhaust layout.
Fitment & installation
Install only on compatible closed-course S58 competition vehicles. Fit the matching turbo-outlet and downstream connections with appropriate thermal clearance, connect the intended oxygen-sensor provisions and inspect the completed joints for leaks. Motorsport calibration and exhaust configuration should be handled by a qualified workshop.
What's included
- 1 × left-hand catless S58 downpipe
- 1 × right-hand catless S58 downpipe
Vehicle fitment
BMWG80/G81 M3 — S58 closed-course application
BMWG82/G83 M4 — S58 closed-course application
BMWG87 M2 — S58 closed-course application
Technical specifications
Main diameter89 mm
Main-tube constructionOne-piece hydroformed
Material304 stainless steel
CatalystsNone; catless
ConfigurationMatched left and right downpipes
CLOSED-COURSE / COMPETITION USE ONLY
This kit removes the primary catalytic converters and is not for public-road use.
Warranty
All Racing Lab performance parts are covered by a 1-year limited warranty against manufacturing defects and workmanship issues.
Every component is rigorously inspected to ensure quality and reliability, so you can upgrade your vehicle with confidence. If any issues arise, our support team is ready to assist with fast and hassle-free warranty claims.
Return Policies
14-day change-of-mind returns: Available subject to the store's return conditions, including an applicable 20% restocking fee for approved voluntary returns. Please review our full return policy before ordering.
Australian Consumer Law: Your statutory consumer guarantees and remedies are not restricted by this voluntary returns policy or its 14-day period or restocking fee.
Free Shipping
Enjoy fast & free tracked shipping nationwide.
Pro Installation
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Why Buy From Racing Lab
Need help confirming fitment? Contact our Sydney team before ordering.
