Stainless steel sports catalytic converter downpipe 250 cells capristo rolls royce cullinan from 2018 02RR12903001

These high-performance sports catalytic converters feature a 250-cell-per-square-inch substrate, made from the highest-quality materials available today, designed to improve vehicle airflow and increase performance.

The cell count of a catalytic converter substrate refers to the number of holes per square inch and is a direct indication of the flow capabilities of that substrate. The lower the hole count, the larger the hole must be to fill a square inch; a larger hole subsequently allows more exhaust gas to flow.

All that high flow won't help if the substrate is "squeezed" into a can or pipe that's too small in diameter. For this reason, CAPRISTO Sports Cats are packaged in 5.2-inch packages to maximize exhaust gas flow and valved exhaust system operation.

The CAPRISTO valved exhaust system helps with low-rpm torque by providing exhaust backpressure and increases temperature for proper catalytic converter operation. While in the open-valve condition for high RPM, it takes full advantage of the free-flow characteristics of CAPRISTO Sport Cats by optimizing high-energy exhaust at the ideal temperature and backpressure for maximum performance.

These catalytic converters can easily be retrofitted to CAPRISTO exhaust systems or any system that fits directly over the OEM exhaust.

Capristo Automotive emphasizes that you should avoid accelerating your car when not in motion! The resulting exhaust flames could cause damage to vehicles and people nearby!

Recommended for off-road and track use only

Replacing the OEM catalytic converter(s) may trigger the CEL (Check Engine Light).

The use of sport catalytic converters, replacement pipes, and manual valve controls (CES-3, EVCU-1) is not permitted on public roads in some US states and other countries. Please observe the legal regulations in your country/state. Sport exhaust systems not approved for use on public roads are intended for racing purposes only and are designed for use on private racetracks. Use on public roads is at your own risk. Before installing an exhaust system, the buyer must ensure that the system can be used in their respective region. Capristo Automotive emphasizes that you should avoid accelerating your car when not in motion! The resulting exhaust flames could cause damage to vehicles and people nearby!