No aperture, Φ70 muffler with a noise reduction design that emphasizes output. CSOhara Silent Sports Exhaust System uses SUS material with low heat shrinkage and excellent sound absorption. A silencer that incorporates sound reduction know-how into its internal structure.

In response to customers’ demands, we have prepared a silencer-less mid piece (middle pipe) for CSOhara Exhaust System users.

A new mold measurement design was taken from the stock AP2 catalyst. It is also compatible with AP1 by changing the O2 sensor boss position to AP2. Measures for the O2 sensor harness tension issue when using in AP2. Special gasket, bolts and nuts included.

Φ70 pipe without aperture restriction from the front flange. Use it for vehicles where sports catalyzers and third-party catalyst adapters are insufficient. By offsetting the O2 sensor boss, we have taken care to ensure that both AP1/AP2 can install it without straining the harness. Special gasket, bolts and nuts included

Bulk buying is recommended. Triangular flange side muffler gasket for replacements. It is a friendly design with a ring press fitted into the inner diameter to improve durability. If using a different diameter, please specify the larger diameter size, provided that the inner ring part is in close contact.

Reduces swirl resistance due to level difference with the exhaust manifold. The SARD catalyst has an inlet diameter of Φ76.3, which prioritizes purification efficiency, compared to a typical Exhaust manifold outlet of Φ60.5, and is an adapter for the purpose of rectifying the turbulent flow of exhaust gas due to the difference in pipe diameter.