Ultimate Racing 3" High-Flow Cat (Metal Substrate Core) - Mazdaspeed 3 07-10+

- 3-inch 304 stainless steel piping
- Replaces OEM secondary catalytic converter with our high flow metal substrate core (efficient to 750 hp)
- TIG welded to perfection
- Proprietary "3-inch Donut Gasket" for a TRUE unrestricted 3-inch design
- Bolt-on

Dyno chart:

Catback
Max Horsepower: 273.74
Max Torque: 312.45

Catback/HighFlowCat
Max Horsepower: 274.15
Max Torque: 314.63