If you’ve purchased our MPP.R Rear Subframe Inserts, we thank you supporting MPP as always! These inserts are super easy to install, follow the directions below and you’ll have no problem.

NOTE: It is easiest to do one corner at a time, while leaving one bolt loose to allow the subframe to lower without fully hanging off unsupported.

Installation Instructions:

Time Required: 1.0 hours
Tools Required: 10mm socket, 13mm socket, 21mm socket, two jacks or hoist, flat-heat screwdriver
Difficulty Level: 3/10

Step 1 – Raise Car, Remove Mid Aero Shield, Drop Rear Diffuser

  • Raise both sides of the car, ideally using a hoist.
  • Remove the rear aero shield (10mm bolts)
  • Remove bolts from rear diffuser (x6), and rear diffuser to wheel arch liner plastic clips (x6)

Step 2 – Install Front Subframe Spacers:

  • Remove the left front subframe lower shear plate (2x 13mm head bolts)
  • Remove left front subframe bolt (1x 21mm head bolt)
  • Loosen the left rear subframe bolt (1x 21mm) but DO NOT REMOVE! Do not exceed 12mm of gap between bushing and body of car
  • Install the insert labeled “FRONT UPPER” on the top of the left front subframe bushing.
  • Install the insert labeled “FRONT LOWER” on the bottom of the left front subframe bushing.
  • Re-install the shear plate, leaving the 2x 13mm bolts hand-tight.
  • Install the 21mm bolt but leave it loose (12mm gap or so)

Step 3 – Install Rear Subframe Spacers:

  • Fully remove the left rear subframe bolt (previously loosened in step 2)
  • Using a screwdriver, remove the lower washer from the bottom side of the subframe bushing
  • Install the insert labeled “REAR UPPER” on top of the rear subframe bushing
  • Install the insert labeled “REAR LOWER” on the bottom of the rear subframe bushing
  • Tighten both front and rear evenly and torque to 95lb-ft (128Nm)
  • Tighten the front 13mm bolts to 22lb-ft (30Nm)

Step 4 – Repeat On The Other Side

  • Simply repeat these steps on the right side of the car
  • It’s a good idea to paint mark the bolts and torque-check them after your next track day
  • Enjoy and let us know how the rear end feels on track next time you tackle some high-speed corners!