aFe Silver Bullet Throttle Body Spacers TBS Toyota 4Runner/FJ Cruiser 10-12 V6-4.0L - 46-38008 fits_2017-`Subaru`Impreza 50mm Models (FWD) will be

50mm Models (FWD) will be equipped with 14k F / 12k R spring rates

the upgrade is well worth it

Mandrel Bent Tubing

FRONT REAR SPRING RATES 5k 6k UPPER MOUNT Hardened Rubber OR

Dyno Tested and Produced Power Increases up to +42 HP / +72 Lbs

aFe Silver Bullet Throttle Body Spacers TBS Toyota 4Runner/FJ Cruiser 10-12 V6-4.0L - 46-38008 fits_2017-`Subaru`Impreza 50mm Models (FWD) will beSilver 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.