IAG Performance Adjustable Timing Idler Kit - Subaru Models (inc. 2002-2014 WRX / 2015-2021 STI) Subaru-WRX-2015 Helps reduce movement

Helps reduce movement

then you start surpassing the limits of your factory top mount intercooler setup and you can experience things like heat soak which will certainly limit the full potential of your modifications

it will experience atmospheric pressure

HKS uses straight-through pipe design to minimize back pressure restriction

Fits All Subaru EJ turbo models

IAG Performance Adjustable Timing Idler Kit - Subaru Models (inc. 2002-2014 WRX / 2015-2021 STI) Subaru-WRX-2015 Helps reduce movementIAG Adjustable Timing Idler Kit 2002 2014 WRX 2015 2021 STI Dial In Cam Timing After Resurfacing or Thick Gaskets The IAG Adjustable Timing Belt Idler Kit provides two CNC machined eccentric idler pulleys that allow precise camshaft timing adjustment on EJ20 and EJ25 engines. This is specifically required after deck resurfacing or when using thicker head gaskets, both of which alter the effective timing belt length and can shift cam timing out of