(Garage Sale) GMR High-Flow Cats (pre-MY10.5 V8 Vantage)


Free up the sound and power of your Aston Martin V8 Vantage with GMR’s high-flow cats!

These were specifically designed to work with their supercharger kits but also make great power even if staying naturally aspirated. Shaped for optimal gas flow, these cats will make power regardless of whether you’re supercharged or not. As an added bonus, the pair weighs over 6 lbs (~3 kg) less than the factory components!

See Fitment Notes below for information about vehicle compatibility.

This is a used product and is sold as-is. The sale is considered final once shipped.

NOTE: One of the downstream o2 sensor bungs was cross-threaded and must be repaired to be used. These cats also feature secondary o2 sensor bungs that can be used instead of the primary ones.

Out of stock

Fitment Notes

These are a direct replacement for the OEM catalytic converters on a 4.3L V8 Vantage and pre-MY10.5 V8 Vantage (which uses the same exhaust system as the 4.3L V8 Vantage).

They can also fit the post-MY10.5 V8 Vantage, but will require a set of GMR headers or VelocityAP headers.

Garage Sale Listings

Garage Sale listings are for items that are not normally kept in stock but are “on the shelf” at Redpants. Inventory of Garage Sale items is not renewed so once they sell out, the listing will be removed.

Sales for Garage Sale items are final – no returns, refunds, or exchanges will be accepted.


This product is in stock in Japan.

Parts Information

Make Model Year
Aston Martin V8 Vantage 2005
Aston Martin V8 Vantage 2006
Aston Martin V8 Vantage 2007
Aston Martin V8 Vantage 2008
Aston Martin V8 Vantage 2009
Aston Martin V8 Vantage 2010