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RACING MUFFLER WRX STI SEDAN 11-14 USA31008 BF003 SUBARU IMPREZA WRX STI 4D 2011 2014 EJ257 Remarks Only overseas market. 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

all without compromising ride quality

No Tune Required – No change in maximum boost or time to spool so it's safe to install and drive

The COBB Ford Focus ST FMIC is the single best bolt-on modification for the platform

25 top and 14x1

Having Rally Armor UR mud flaps versus not proves a massive contrast in its vehicular coat finish

FOR-009-107

5g Bolt M8 X 1

Piston: Forged piston with Nickel plating for anti-knocking properties and top piston ring stability

2x MAF Flange Screws

(Tolerant RPM: 8500rpm)

Which produce more coverage of the turbine housing for improved heat management as well as a cleaner fit and appearance

BM14-XTG6 kit features an Xtreme pressure plate for the most demanding driver