Sports muffler that combines excellent exhaust efficiency with ease of drive for daily.

 

 

• The optimal pipe layout and straight structure with no narrowing have achieved exhaust pressure that is approximately 48% lower than the stock.
• In daily use RPM range, such as city driving and in cruise control, the bass sound is moderately resonant while suppressing unpleasant muffled sound, allowing the driver to enjoy a comfortable driving experience.
• At high rpm when you fully accelerate, it produces a sporty sound that is typical of boxer engines.
• The dual exhaust layout with a D124 blue gradation tail gives the rear view a sporty and powerful impression. *Stock: D100mm stainless steel tail.

 

 

 

 

 

Remarks

*Requires bending of the stock heat shield. *Installation of this product does not affect ground clearance.

 

 

 

---

 

●Exhaust Flow Resistance Comparison

 

• Comparing this product to the stock muffler, we were able to confirm a reduction in exhaust restriction of up to 48%.
• The pipe diameter, layout, and straight structure without any restrictions have resulted in an overwhelmingly low exhaust pressure.

 

 

●Muffler sound comparison

 

• The silent chamber installed in the mid-pipe suppresses unpleasant booming noise at normal RPMs while emphasizing powerful bass tones.
• The sound has also been tuned to accentuate the treble, giving you a sense of exhilaration when you step on the gas.

 

*Graphs and figures are based on in-house measurements. They may vary depending on the vehicle and measuring equipment.

 

 

●Exhaust Comparison

31029-AF016 Super Turbo Muffler

 

• Pipe diameter from 65mm to 54mm x 2 and straight structure without restrictions provide overwhelming exhaust performance.
• By optimizing the silent chamber and silencer, the sound of the boxer engine's bass has been emphasized, with less unpleasant muffled sound.
• Four-part configuration with two middle pipes and two main mufflers.

 

Stock Exhaust

 

• Pipe diameter right behind the flange of the middle pipe is D60mm, and behind the middle silencer it is D54mm.
• Pipe diameter behind Y-pipe is D43mm.
• Three-part configuration with one middle pipe and two main mufflers.

 

Slotted Tail

HKS's original innovation of noise reduction, slotted tail tips, are adopted.
Slots in the tail of the muffler help to muffle the sound by approximately 2dB.
We conducted a thorough volume and frequency analysis both inside and outside the vehicle. Sound volume inside the cabin was kept to a level that does not disturb conversation, while the frequency outside the cabin was kept to a level that is considerate of the neighbors, and by focusing on muffling low frequencies, we were able to suppress the muffled sound inside the cabin and the echo of sound outside the cabin.

 

Attention to details

Attention is paid not only to performance, but also to details.
Main muffler is TIG welded and carefully finished by skilled craftsmen, one by one. The products produced by our outstanding craftsmanship are finished with both strength and beauty.

 

 

 

---

 

 

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.