Replace the four restrictive McLaren 720S OEM 650 cell-per-square-inch (CPSI) catalytic converters with two ultra high-performance 200 cell HJS German-Imported Tri-Matallic high flow catalytic converters for improved performance and hypercar sound. Fabspeed HJS Sport Cats are extremely efficient in terms of air flow, flowing at 93 - 95% the rate of a straight pipe.                             

Fabspeed Motorsport USA was the very 1st company in the world to design, engineer, dyno and develop performance parts for McLaren cars. Fabspeed has the most experience and knowledge of any company on these cars.

Utilizing our two development McLarens, MP4-12C and 570S, we’ve experimented with many designs and were able after much testing and engineering to craft the highest quality catted downpipes on the market. We are utilizing bullet proof, high flow 200-cell HJS German Imported HD catalysts that flows 93% to 95% of a straight pipe for most possible power and no check engine light. Fabspeed Motorsport invested a lot of time and resources into developing the best possible McLaren downpipes and we’re now proud to offer you this latest and greatest solution. McLaren is constantly updating their vehicles and offering even better performance, and we're dedicated to doing the same. Fabspeed Motorsport is the world's authority for aftermarket McLaren performance.

• HP (whp): +55
• TQ (ft/lbs): +51
• WT (lbs): -9

HJS HD 200-Cell Catalysts

HJS Germany manufactures the highest quality catalysts in the world. Fabspeed has incorporated 200 cell-HJS HD catalysts into our latest design to maximise horsepower. Our complete redesign incorporates these high flowing catalysts in conjunction with heat blankets and makes incredible power gains especially when paired with a complete Fabspeed exhaust and ECU Tune package.

Heat Blankets

• Fits all McLaren 720S 2018+ Model Year
• System comes with thermal military spec blankets included
• Constructed with Fabspeed-proprietary 200-cell HJS HD German imported high-flowing catalytic converters. flow equivalent to 93% to 95% of a straight pipe / no cat systems.
• Make significantly more power than catbypass pipes. 
• Less restriction after the turbo allows for faster spooling and transient boost response.
• Optimized for maximum performance with no check engine light. Compliance with emissions.
• Improved sports car sound and power with less restriction after the turbo for faster spooling, you can have flames and still have exotic hypercar sports car sound.
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty

Visual comparison between the factory catalytic converters and our high performance Maxflo Catalytic Converters

Dyno Graph 

McLaren 720s

FS-MCL-720S-SC

Manufactured by

Fabspeed

Warranty

Lifetime Limited Warranty against defect

DYNO SESSION | McLaren 720s with Fabspeed X-Pipe, H-Pipe and "LT"-Style Exhausts

McLaren 720S Development, Install, & Driving

What Are HJS Catalytic Converters?