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Tighten Up Rear Subframe Movement on the GRB Chassis STI
The Cusco 692 927 AB rear member collar bushing replaces the factory rubber rear subframe bushing with a firmer polyurethane collar, reducing unwanted subframe flex for more consistent rear end response on the GRB chassis STI.
Key Features
- Firm polyurethane construction reduces subframe deflection compared to the factory rubber bushing
- Direct fit replacement for the factory rear member mounting location, no cutting required
- Improves rear end precision under hard cornering and braking by limiting subframe movement
- Corrosion resistant collar sleeve maintains proper bolt torque over time
- Engineered by Cusco specifically for the GRB chassis rear subframe mount
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2011-2014 | Subaru | WRX STI |
Specifications
| Detail | Value |
|---|---|
| Part Number | 692 927 AB |
| Brand | Cusco |
| Type | Rear Member Collar Bushing |
| Material | Polyurethane with steel collar sleeve |
| Mounting Location | Rear subframe member |
| Quantity | Sold as upper and lower set, 4 pieces |
| Full Car Coverage | Requires 2 sets for one vehicle |
| UPC | Not published by manufacturer |
What's Included
- 1x 692 927 AB upper and lower bushing set, 4 pieces
- Installation hardware
About Cusco
Cusco has manufactured chassis reinforcement and suspension components in Japan since 1954, supplying both OEM and motorsport programs. Its bushing and subframe collar products are engineered to reduce unwanted chassis flex while remaining serviceable with common hand tools.
Frequently Asked Questions
What is the 692 927 AB?The 692 927 AB is a Cusco rear member collar bushing set made from polyurethane, designed to replace the factory rubber rear subframe bushing on the GRB chassis Subaru WRX STI.
How many sets of the 692 927 AB do I need for one car?This listing is one upper and lower set of 4 pieces covering one side of the rear subframe mount. Two sets are needed to cover both sides for a complete car.
Will this bushing increase noise or vibration inside the cabin?Some increase in road noise and vibration transfer is expected with a firmer polyurethane bushing compared to the factory rubber piece, which is typical for this type of upgrade.
Install Instructions
- Raise and support the vehicle securely, then remove the rear subframe cover if equipped
- Support the rear subframe with a jack and remove the factory rear member mounting bolts
- Press out the factory rubber bushing from the subframe mounting location
- Install the 692 927 AB collar bushing set, aligning the upper and lower halves around the mount
- Reinstall the mounting bolts and torque to factory specification before lowering the vehicle
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