Why fit our 100-Cell Racing Cats to your DB9? More power and better sound. The catalysts fitted to the car from the factory do a good job of scrubbing emissions but are built to meet a price point and are very restrictive to exhaust flow. We replace these with the highest quality 200 Cell catalysts on the market, used in cars with over 1000BHP. Our 100 Cell Race Cats make a huge difference to the flow of exhaust gases, liberating vital horsepower and improving throttle response for faster acceleration and downshifts. Designed and tested to function within the Aston Martin emissions parameters, these catalysts do not affect engine function or emissions systems and are an easy bolt-in replacement for the bulky OEM items. When you buy a new car, Aston Martin offers a 3 year warranty on their catalysts, which is exactly the same as what we offer on ours. In addition to liberating power, you'll also hear your DB9 take on an even more race-inspired sound and enjoy those little crackles on the over-run. System Features Manufactured from Aero Space quality 304 Stainless Steel. Lightweight design, reduces weight by almost 30Lbs. improving handling braking and accelaration. Veloce Sport 25 year guarantee. Gains of 12-15HP.