HKS Stainless Center Pipe Impreza

• It's more big in pipe diameter which let the exhaust gas smoothly to the muffler and have better engine performance.
• We used SUS304 that has durability and great appearance.

Remarks

GRF: Close noise level Stock:L84 R83 LEGAMAX Premium installed:L89 R88

GRB: Close noise level 84dB (LEGAMAX Premium installed), 
[specC] is ok Close noise level 89dB (LEGAMAX Premium installed)

GH8: Close noise level 85dB (LEGAMAX Premium installed)

* 2:about main materials for configuration diagram 
 : SUS304/high quality stainless steel 
 : SUH409/stainless steel material that are used a lot for stock