Kartboy 02-07 Subaru WRX/04-07 Subaru WRX STi Rear Differential Bushing Kit - Soft

This Kartboy rear differential bushing kit uses a softer durometer polyurethane than some other aftermarket options. This means it's designed to reduce unwanted flex in the rear differential mount without making the ride overly harsh. When your differential moves too much under acceleration or braking, it can lead to a vague feeling and less precise handling. Replacing the stock rubber bushings with these polyurethane ones helps to firm up that connection.

Kartboy is known for making well-built suspension components for Subaru vehicles. This kit is a popular choice for WRX and STI owners looking for a noticeable improvement in how the rear end feels during spirited driving or track use. The softer compound aims to strike a balance between performance gains and everyday comfort, making it a solid option if you want a more connected feel without excessive noise or vibration.