CB-3915K – COBB VA WRX, WRX STI Rear Endlink Kit

Congratulations on your purchase of the COBB Tuning Rear sway bar endlink kit! The following instructions will assist you through the installation process. Please read them BEFORE beginning the install to familiarize yourself with the steps and tools needed. If you feel you cannot properly perform this installation, we HIGHLY recommend you take the vehicle to a qualified and experienced automotive technician.

Parts List

Rear Swaybar Endlink

(4) Billet Endlink Spacer Caps

(2) m10x1.25 serrated flange nut (for end link threads)

(8) M10 Flat Washer

(2) M10 Lock Nuts (for bottom mount)

m10x1.5

Click here to expand...

m10x1.5x75

Tools Needed

Sockets

3/8"

3/8" ratchet
3/8" 12" extension
3/8" 6" extension
3/8" 12mm socket
3/8" 17mm socket

Hand Tools

5mm Allen Key

Wrenches

14mm combination wrench
17mm combination wrench

Stock Endlink Removal

Park your car in a flat, level area and allow it to cool down properly.
Using a 10mm wrench, remove the negative terminal of the battery.
Jack your car up and support it properly, either using a lift, ramps, or jack and jack stands.
Lay a blanket or cardboard down under the car, or grab a creeper. In this case his name is Andrew
To remove the end links, start with loosening the 14mm bolt holding the sway bar to the lower control arm using a socket on one side and a wrench on the other.
Use a 5mm allen to hold the center of the end link where it goes through the sway bar, and use your 14mm wrench to remove the nut.
Afterward you should be able to remove the entire endlink from the car.

Installation

Pull out one of the COBB Adjustable End-Links and remove the red cover from the top piece.
Apply some of the supplied silicon grease to either side of the bushing end of the end link and then slide the black aluminum cups in place.
Loosening the jam nuts on either side of the main sleeve, you'll want to turn the sleeve until it's 18-20 mm longer than the factory one. The jam nuts are going to use a 17mm wrench while the center body will be 18mm.
Leaving the jam nuts loose for now you can now install the bottom end where it mounts into the lower control arm. The washers will go on the outside of the arms, while the black aluminum spacers will pop over the bottom "T" bushing ends and goinsie of the control arm. The bolt will go into the arm from the front, with the nut on the back side. Get the nut on but leave it loose for now.
Reinstall the lower strut bolt and control arm bolt (in that order). You may need to use a jack to adjust either the arm or the knuckle to the height needed.
Leaving the center brackets of the sway bar off, loosely install the top of the sway bar end link back into the sway bar on each side. There should be a washer on either side of the sway bar with the supplied nut holding it all together.
With both sides of the sway bar attached loosely to the end links, you can re-install the center brackets.
Tighten the bolts going through the control arm for the end link as well as the top end link bolt going through the sway bar. You may need to use a 5mm allen to hold the center in place while you tighen the nut with a ratchet.
Reinstall the wheels and torque them down on both sides.
Drop the car down gently onto it's wheels using a jack. Depending on the size of your wheels and tires you may need to set it down on some wide boards in order to fit down underneath it.
With the car on it's weight you can look at the sway bar and adjust the end links on either side by twisting the center collar.
Things to keep in mind while adjusting them:
- No tension on the bar when it's at ride height. This means the end links shouldn't be pulling against eachother.
- The bar is fairly level from side to side rather than being twisted (this should happen naturally when you remove tension from the bar)
- The sway bar and end links won't hit anything as the control arm goes up and down in it's natural range of motion
Once the adjusment is complete add a small dab of the supplied loctite to the threads above the adjuster and spin down the jam nuts to lock it in place. Tighten using a 17mm on the nut and 18mm on the adjuster body. Keep in mind that one end of the link is threaded left-handed (counter-clockwise) so you'll need to spin the nut in that direction to tighten it.
You can now tighten up all the bolts for the rear sway bar.
Go out and Enjoy!