IAG Performance Adjustable Timing Idler Kit for EJ20/EJ25 Subaru WRX, STI, LGT, FXT

This is one of those parts that makes more sense the deeper you get into an EJ build. It gives you more control in the timing system when the combo is no longer basic.

• Use case: Higher-end timing setup and engine assembly work
• Best fit: Serious EJ builds where finer adjustment is useful
• Why it matters: Gives you more control than just throwing standard timing hardware back on

Fitment: EJ20 and EJ25 WRX, STI, Legacy GT, Forester XT

Why you'd choose it: Choose this when the engine build is detailed enough that timing control and setup flexibility actually matter.