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The JB4 is the most advanced and highly featured tuning system available for your 2022+ Subaru WRX 2
The serrated/helix combination design also reduces intake whistle that occurs with helix-only designs (US PAT 07055513)
Nur-spec Lip Kit
Iridium alloy has an extremely high melting point
aFe Power Sprint Booster Power Converter 13-16 SB Scion FR-S / Subaru BRZ (A/T) Pulleys The JB4 is the mostSilver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T 6061 billet aluminum and using a unique serrated helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers. This
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