Powerflex Rear Subframe Bushing Inserts for Model 3: Install FAQ
By Tesla Accessories | Published: 2026-11-05
Category: أدلة إرشادية
A step-by-step guide to installing Powerflex rear subframe bushing inserts on a Tesla Model 3, with checkpoints to avoid common mistakes and get the most from the upgrade.
Quick answer
Install Powerflex rear subframe bushing inserts by raising and supporting the rear of the car, unbolting the subframe enough to access the bushings, cleaning the voids, inserting the polyurethane pieces, and torquing everything to spec. The key is to work one bushing at a time and confirm full seating before lowering the car.
Why the rear subframe bushings matter on a Model 3
The Model 3’s stock rear subframe bushings are made of natural rubber with voids designed for comfort. Under hard acceleration or cornering, those voids allow the subframe to move slightly, which can dull steering response and introduce a vague feeling from the rear. Powerflex inserts fill those voids with polyurethane, reducing movement without replacing the entire bushing. This is a relatively inexpensive way to tighten up the rear end, but it does come with a trade-off: you may notice more road noise and vibration transferred into the cabin, especially over sharp bumps.
Tools and preparation
You will need a floor jack and jack stands or ramps, a torque wrench, metric sockets and wrenches, a rubber mallet, and a pry bar. A lift makes the job easier, but it can be done on jack stands. Clean the area around the subframe bushings before starting so dirt doesn’t get trapped between the insert and the rubber. Also, check the condition of your original bushings—if they are cracked or torn, inserts alone may not be enough and you should consider full replacement bushings instead.
Step-by-step installation
- Raise and support the rear of the car: Lift the rear of the Model 3 and place jack stands under the factory lift points. Make sure the car is stable before crawling underneath. Never work under a car supported only by a jack.
- Locate the rear subframe bushings: The subframe bushings are located where the rear subframe mounts to the chassis. There are typically four bushings, but confirm the count for your specific Model 3 version. Take a photo before disassembly to reference later.
- Support the subframe and loosen the mounting bolts: Use a jack to support the subframe, then loosen the bolts that secure the subframe to the chassis. You don’t need to remove the subframe completely—just lower it enough to access the bushings. Loosen bolts gradually in a crisscross pattern to avoid stressing the subframe.
- Clean the bushing voids: Spray the rubber bushings with a silicone-based lubricant and wipe away any debris. This helps the inserts slide in and ensures a proper fit. Avoid petroleum-based lubricants, which can degrade rubber over time.
- Insert the polyurethane pieces: Following the kit’s instructions, press the inserts into the voids of each bushing. Use a rubber mallet or pry bar to seat them fully. They should sit flush with the bushing surface. If an insert won’t seat, check for misalignment or debris—don’t force it.
- Reinstall the subframe and torque bolts: Raise the subframe back into position and hand-tighten the mounting bolts. Then torque them to Tesla’s specified values in a crisscross sequence. Always use a calibrated torque wrench—guessing can lead to loose or stretched bolts.
- Lower the car and test drive: Remove jack stands and lower the car. Take a short test drive, listening for unusual noises and feeling for changes in rear stability. Re-torque the subframe bolts after 100 miles as a safety check.
Product facts
- Powerflex Rear Subframe Bushing Insert Kit for Tesla Model 3: Powerflex Rear Subframe Bushing Insert Kit for Tesla Model 3 is made from polyurethane to fill the voids in the stock rubber bushings. This reduces subframe movement under load, which can improve rear stability and steering feel without replacing the entire bushing.
Powerflex Rear Subframe Bushing Insert Kit for Tesla Model 3
