STI Group N Engine Mounts

REDUCED COMPLIANCE

STI Group N hardened engine mounts utilize harder rubber compounds in order to reduce driveline movement and torque reactions.  Improves power transfer and responsiveness while increasing durability under extreme operating conditions.  Stock engine mounts can fail under hard launches or simply due to deterioration of the rubber over time.

Available either as a set of LH and RH sides or individually should you require a replacement.  Comes with rubber mounts and metal backing plates to mount to the engine.  Non-turbo applications can use the rubber portion but must use the original backing plates from the car in order for the mount to align properly with the crossmember.  When replacing applications originally equipped with hydraulic engine mounts two M10 x 1.25 flanged nuts are required per side.

These mounts are STI Sport Parts originally developed for Group N rally use.  Identical in appearance to the factory parts and made by the same Subaru suppliers so you can expect factory quality and fitment but with greatly increased rubber durometer compared to the standard parts.

Like most uprated mounts you should expect an increase in NVH making the car less comfortable to drive.

Manufacturer Part Nos:

• ST4100055110 (RH Engine Mount)
• ST4100055120 (LH Engine Mount)

What it fits:

• EJ257/EJ255/EJ207/EJ205
• EJ20K/EJ20G/EJ22G/EJ22T
• EJ20X/EJ20Y
• EJ253/EJ251/EJ204 (Must Use Original Engine Mount Brackets)
  
• FA20F Forester XT MT MY15-18 (Must Use Original Engine Mount Brackets)
• FA20F WRX (Requires Use of MY15-18 FXT MT Engine Mount Brackets)