S Flow Universal Type (Oval Muffler)
One of the most common flow type in aftermarket exhaust muffler category. S flow muffler is designed for daily & city-drive usage which provide better pickup responses during low and mid rev operation.
The right spec able accumulate moderate amount of backpressure, enhancing throttle responses & mid range performance. But, over-packed backpressure may lead to lost of high rev performance; and loose flow pressure may cause poor pickup performance.
- Reversible Design, can be in install in any custom setup without losing its fundamental characteristic.
- Available in Center Muffler & Rear Muffler.
- Enhance throttle responses & acceleration.
- Comfortable with low noise.



Naturally aspirated engine with auto/manual transmission:
- Inlet 1.75″ → 1.0L (1000cc) to 1.6L (1600cc)
- Inlet 2″ → 1.7L (1700cc) to 2.0L (2000cc)
- Inlet 2.2″” → 2.1L (2100cc) to 2.5L (2500cc)
- Inlet 2.5″ → 2.6L (2600cc) to 2.8L (2800cc)