86 ZN6

Code No. 33004-BT002



Straight design without catalyzer = Power Up, because of the low exhaust pressure.
(Complied for Step-up tuning.)







The main part for the high output is the exhaust manifold shown on the right graph.
We recommend having a total full straight exhaust tuning by having more power by changing the muffler and exhaust manifold and tune the sound with the front pipe.
* If the exhaust manifold is changed, the engine check light might be turn on for a certain combination. So the muffler + front pipe combination is an effective choice.
> Product specifications are changed for products made after December 2019.





■Straight design and still clear sound

The catalyzer-less straight pipe will have bad noise.
So we have tested for frequency analysis as shown on the right graph, and tuned the sound with 2 resonators.

Stock 4.7kg 106lb
HKS 3.8kg 8.3lb






  • HKS logo plate attached
  • Welding change from flux core to solid wire
  • Made in Thailand

Added HKS metal plate



Vehicle Model Engine Model Year Pipe Size Consist of Code No. Manual Remarks
86 ZN6 FA20 12/04 -21/10 φ60 1 33004-BT002