Subaru Front Control Arm Front Inner Bushing
CB-4425K Standard Bushing
CB-4428K Offset Bushing
Front Control Arm Inner Bushing
Subaru STI 2011-2021
Subaru WRX 2015-2021
Congratulations on your purchase of the COBB Tuning Roll Center Correction 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.
Table of Contents
While You're There
While doing this installation it's an easy time to do other installations such as sway bars and endlinks. Maintenance items such as the Balljoints that can be on their way out, or potentially damaged while removing the stock arms are a good idea to have on hand, or replace at the same time as they make the whole procedure easier.
Parts List
Tools Needed
Sockets
1/2"
- 1/2" ratchet
- 1/2" 6" extension
- 1/2" 14mm socket
- 1/2" 19mm socket
Hand Tools
- Needlenose pliers
Wrenches
- 14mm combination wrench
- 17mm combination wrench
- 19mm combination wrench
OEM Style Handling
We recommend this setting for most users.
11-14 STI
- Main bushing between arm and vehicle: 16mm spacer
15-21 WRX and STI
- Main bushing between arm and vehicle: 16mm and 11mm spacer stacked
Anti-Dive
11-14 STI
- Main Bushing between arm and vehicle: 11mm Spacer
- Between arm and support bracket: 5mm spacer
15-21 WRX and STI
- Main bushing between arm and vehicle: 16mm spacer
- Between main bushing and support bracket: 11mm spacer
Anti-Lift
11-14 STi
- Main Bushing between arm and vehicle: 16mm spacer
- Between support bracket and vehicle: 5mm spacers
15-21 WRX and STI
- Main Bushing between arm and vehicle: 16, 11, and 5mm spacers stacked
- Between support bracket and vehicle: 5mm spacers
Front Suspension Torque Specs
1 | Lower BallJoint | 36.9 ft-lb | 50Nm |
2 | Front Swaybar Endlink to Control Arm | 44.3 ft-lb | 60Nm |
3 | Control arm front horizontal bushing | 70 ft-lb | 95Nm |
4 | Control arm rear vertical bushing | 103.3 ft-lb | 140Nm |
5 | Shorter bolts for control arm support bracket | 110 ft-lb | 150Nm |
6 | Control arm support bracket brace | 73.8 ft-lb | 100Nm |
7 | Wheels | 88.5 ft-lb | 120Nm |
Links
Contact Us:
COBB Customer Support
Web Support and Tech Articles: COBB Tuning Customer Support Center
Email: support@cobbtuning.com
Phone support available 9am to 6pm Monday-Thursday. 9am to 4pm Friday (CST)
866.922.3059
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