The outer bearing that the rear tie rod on the MKII MR2 attaches to is pressed into the wheel carrier/hub assembly and Toyota won't sell you a replacement unless you buy the entire carrier/hub assembly.
It has been known for a few years that a replacement for the bearing is available from Toyota, in the form of a Camry All-Trac part. The problem is that the center hole in this bearing is for a 14mm bolt while the MR2 uses a 12mm bolt. We have countered this issue by having custom spacers machined that slip into the bearing and fit a 12mm bolt.
This bearing presses into the MR2 hub and refreshes your worn out rear tie rod bearing. While it is not an MR2 specific part, it has been used successfully by many people over the past 5 years and is significantly cheaper than buying a new hub carrier!