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

 

 

FEATURE

 

 

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.

Weight Stock 4.7kg 106lb HKS 3.8kg 8.3lb

 

 

 

 

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

Added HKS metal plate