Supersprint
Supersprint 100 CPSI (100 Cell) High-Flow Sports Cat Downpipe (OPF/GPF) for BMW G20 M340i/M340i xDrive & Toyota GR Supra A90 3.0 B58, Direct Fit - 525821
Supersprint 100 CPSI (100 Cell) High-Flow Sports Cat Downpipe (OPF/GPF) for BMW G20 M340i/M340i xDrive & Toyota GR Supra A90 3.0 B58, Direct Fit - 525821
Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.
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Unlock the real potential of your B58 six with this Supersprint 100 cell metallic sports catalyst front section, part number 525821. Engineered for petrol particulate filter models, it replaces the restrictive factory turbo outlet section with a freer flowing motorsport-grade catalyst for sharper response, stronger mid-range and a richer exhaust note, all while retaining factory-style fit and function.
Why enthusiasts choose this performance catalyst
- Bolt-on front pipe that uses the original mounting points and hardware - no cutting or welding required
- 100 CPSI metal core cat with a high noble metal content for fast light-off and excellent gas flow
- Optimised volume and smooth radius geometry to cut backpressure and improve turbo efficiency
- Lambda probe ports positioned like factory for straightforward install and reliable readings
- High quality flexi section helps isolate engine movement for durability and NVH control
- Developed to reduce the chance of warning lights and avoid the harsh odours often found with cheaper units
- Ideal foundation for Stage 1 and Stage 2 calibrations, or as a premium companion to a cat-back system
Real-world results
We run this setup on our own projects and customer builds. Feedback has been consistently positive regarding fitment, driving feel and exhaust character. Expect quicker spool, crisper throttle response and a deeper tone without the rasp and fumes you get from low-grade alternatives.
Vehicle applications
- BMW 3 Series G20 M340i and M340i xDrive 3.0 B58, particulate filter equipped
- Toyota GR Supra A90 3.0 Turbo, particulate filter equipped
Installation and support
- Direct replacement for the stock catalyst section, utilising the factory brackets and sensor locations
- We recommend new gaskets and hardware when fitting for best results
- Professional installation and mapping support available at MJ Modifications, Warwickshire - request a fitting quote at info@mjmodifications.co.uk
Part number
525821
Manufacturer and warranty
Supersprint
Supersprint one year warranty
Popular search terms
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