Perrin Rear Motor Mount Inserts | 2017-2021 Honda Civic Si 1.5T (PHP-DRV-100)

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17-21 Honda Civic Si 1.5T Rear Motor Mount Inserts by Perrin

PERRIN polyurethane inserts reinforce the OEM rear motor mount rubber bushings to reduce wheel hop and increase performance. PERRIN inserts may increase NVH (noise, vibration, harshness), but the improvement to overall performance is worth it.

The PERRIN Rear Motor Mount insert controls the movement of the drivetrain both on and off throttle giving the driver a more positive feel and literally putting more power to the wheels by eliminating lost energy.

Polyurethane provides enough vibration absorption for daily driving while giving the driver a feeling of a firmly connected engine and chassis.


  • Reinforces the OEM rear motor mount rubber bushings
  • May increase NVH, but the improvement to performance is worth it
  • Controls drivetrain movement on and off throttle, giving a more positive feel
  • Puts more power to the wheels by eliminating lost energy
  • Polyurethane absorbs vibration while giving a sense of connected engine and chassis/li>


  • 2017 - 2021 Honda Civic Si 1.5T


  • Material: Polyurethane
  • Durometer: 70

What's In The Box?

  • 2 - Polyurethane Inserts
  • 1 - Anti-Seize Grease Packet
  • Warranty, instructions, stickers



  • Perrin Worry-Free 5-Year Warranty

Customer Reviews

Based on 17 reviews
Matthew Larsen
Great product for a Great price

I’ve had the insert on now for over 100 miles and can say I’m already satisfied with its performance. The NVH is really not as bad as one would expect and the wheel hop is completely gone. Compared to solid mounts I’ve used in the past on other cars this is a very good, cheap option for the same results.

Joshua Zink
great purchase!!

easy to install. makes the car feel like a whole new ride highly recommend

Rear motor mount inserts

Well worth every penny. This should have been one of my first mods on my 2019 Civic Si. Easy to install and you can feel the difference immediately. The inserts just feel like it tightened everything up without compromising every day drivability. High quality product!

Great Mod

Its a cheap mod and very easy to install. The feeling of the driving changes completely and if you complement it with lowering springs, really much better.

Great motor mount inserts!

This motor mount inserts are great! They make a huge difference in driving and are just great for the money! I daily my car and vibrations are minimal on first gear and at a complete stop but now i don't even notice them anymore excellent product at an excellent price! The only con is it vibrates a-lot when the A/C is on but only when the car is at a stop other than that everything is well worth it!!