MTC Decat Downpipes 3” for McLaren MP4-12C
All Prices Include VAT
MTC Motorsport Decat Downpipes 3″ – McLaren MP4-12C (M838T)
Upgrade your McLaren MP4-12C’s exhaust flow and throttle response with MTC Motorsport’s 3″ Decat Downpipes — engineered for direct fitment and high-temperature performance. Designed to replace the restrictive factory catalytic converters, this performance upgrade increases exhaust velocity, sharpens turbo spool, and enhances the MP4-12C’s exhaust note.
Technical Specifications
Manufacturer: MTC Motorsport
Application: McLaren MP4-12C (M838T V8 Turbo)
Pipe Diameter: 3″ (76.2 mm) mandrel-bent stainless
Material: SS304 aircraft-grade stainless steel (downpipes & flanges)
Construction: Mandrel-bent tubing with precision TIG welds
Heat Shields: Not included
Weight: Lighter than OE catalytic converter assembly (substantial weight reduction vs stock)
Thermal Management: Reduced exhaust restriction lowers exhaust gas temperatures versus factory catalytic converters
Warranty: Lifetime warranty from MTC Motorsport
Key Features
Direct OEM-Fit Design — Precision-engineered to bolt straight into the McLaren 600LT exhaust system with no cutting or fabrication required.
Enhanced Exhaust Flow — 3″ bore and smooth mandrel bends reduce backpressure for faster turbo response and improved throttle response.
Sharper Turbo Spool & Sound — Removal of restrictive cats combined with high-flow design delivers crisper throttle response and a more aggressive exhaust note.
Motorsport-Focused Design — Catless construction prioritises performance and sound for track-oriented and tuned vehicles.
Weight Savings — Reduces mass compared to factory catalytic setup, contributing to overall vehicle weight reduction.
Pro Install Recommended — ~5–6 hours install time; rear body panel removal may be required for access.
Benefits
Improved Turbo Response — Faster spool and reduced lag for more immediate power delivery.
Aggressive Exhaust Tone — A louder and more engaging exhaust character, especially when paired with performance exhaust systems.
Robust Stainless Construction — Long-lasting corrosion resistance and strength.
Lifetime Coverage — Confidence-inspiring MTC warranty for peace of mind.
Fitment
Vehicle Compatibility:
McLaren MP4-12C (2011–2014)
Engine: 3.8 L Twin-Turbo V8 (M838T)
Note: Proper registration and tuning may be required for emissions control systems depending on local regulations.
Install Notes
Special Tools: Standard exhaust tools
Additional Items: Lambda spacers and/or ECU calibration may be required to prevent diagnostic errors; consult installer.
Package Contents
(1) Pair of 3″ Decat Downpipes with Flanges
Installation hardware (as required)
We offer professional installation services directly in the Rennworks workshop, where your product will be expertly fitted and fully set up for optimal performance. To book an installation appointment, simply contact us and we’ll be happy to arrange a time that suits you.
Not sure if this product is the right fit for your vehicle? We’re here to help. Our team can quickly check compatibility and make sure you’re choosing the correct item before you buy. Just reach out with your vehicle details, and we’ll confirm everything for you.
Some product images are for illustrative purposes only and may show a generic or representative version of the item. Actual components may vary slightly depending on vehicle application or specification, but all products supplied will match the description and meet our quality standards.
Most orders are processed within 1–2 business days and usually ship within 3–7 business days. Not all items are held in stock, as some products are bespoke and made to order — for example, certain coilover suspension kits and exhaust systems — and delivery times may be longer in these cases. Where this applies, we’ll keep you fully informed and confirm expected dispatch dates as soon as possible. If you’d like to check availability or lead times, feel free to contact us before making a purchase.