Hi-Power SPEC-L II

Code No. 31019-AH108



The SPEC L II muffler has been redesigned to match the bumper shape of the 2020 Honda CIVIC Hatchback. It can be installed on 2017-2019 models as well. The existing 31019-AH107 will be discontinued. Please refer to page 2 for details.

30% weight savings
HKS use thin stainless-steel material for the pipe and silencer to achieve weight reduction compared to the stock muffler.
Stock: 17.5kg, SPECL II: 12.3kg

Elaborated sound quality and low back-pressure
It provides a sporty bass sound during the acceleration and eliminates uncomfortable drone sound at the normal rpm range. In addition, the straight structure silencer achieves about 40% less low back-pressure compared to the stock.







Cert. No. JQR40213015
Vehicle CIVIC
Model FK7
Engine L15C
Model Year 17/09 - 21/08
Shape of muffler HP
(Hi-Power SPEC-L II)
Main material S304
Diameter of tip 94
Diameter of center pipe 60.5 - 50.8 x 2 (*1)
Close noise level Stock 83
HKS 93
About road clearance(*2) Clearance 140mm
Portion of the kit Center silencer
Product Weight 12.3kg


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.