HKS Silent Hi-Power Exhaust for Mazda RX-7 FD 91-98 31019-AZ002

silent Hi-Power

High quality sound. Sport exhaust system with reduced noise level.

Silent Hi-Power mufflers offer high performance and sporty appearance with the added benefit of reduced noise levels making it the best choice for more mature enthusiasts. Silent Hi-Power mufflers are constructed entirely of SUS304 grade stainless steel for high lustre, long lasting performance. For certain applications, HKS has introduced the "Silent Chamber" which removes a lot of the lower frequency noise that can often be heard into the cabin even when cruising. The silent chamber removes this uncomfortable noise but due to its closed end design, only a minimal amount of exhaust gas flows into it, meaning that the disruption to exhaust gas flow through the entire system is minimized and there is no harm to performance.

Silent chamber for some vehicles.

Straight structure has a characteristic that is easy to eliminate high frequency sound. However, it is difficult to control low frequency uncomfortable sound that can be heard in the cabin. Silent chamber can reduce this low sound.

In addition, because of the closed inside structure, exhaust gas does not through inside silent chamber and exhaust gas resistance is less. Therefore, there is no performance difference even silent chamber is equipped.

"JASMA" approved.

The material is SUS304 for improvement of appearance and durability.

Proven "Advantex* glass wool" (Continuous fiber glass wool).

Hollow hook and pressed flange for some vehicles to reduce weight.

Redesigned inner structure of silencer to improve performance and appearance.

TYPE-H

Sport type round shape silencer.

TYPE-S

Oval shape silencer for noise reduction.

APPLICATIONS

MAZDA RX-7 FD3S 13B-REW 91-98

Shape of muffler HP (TYPE-H) (silent Hi-Power)

Main material S304

Diameter of tip 120

Diameter of center pipe 75 (*1)

Close Noise Level Stock 87

Close Noise Level HKS 98

Remarks

Not for 98/12- 206.0kw(280PS) vehicle.

About HKS muffler

*1: About center pipe

Diameter of center pipe is the portion that has the largest diameter. (Excluding silencer and tip.) It is the condition with stock suspension.

*2: Minimum road clearance between HKS muffler (Any parts included in the kit) and road surface. Therefore, it may be different from actual road clearance of the vehicle.

The data is basically the condition with stock suspension. However, please understand that some items have data with low down spring or ride height adjustable suspension kit.

Caution: Hook, bracket, stay may be changed without prior notice.

★ Exhaust noise level at idle.

VIP Motorsport is an official stockist of HKS Exhausts & Products in the UK & Europe. Contact us for a lead time. Generic image may be used – part received may differ!