SPL Bumpsteer Adjustable Front Tie Rod EndsSPL Tie Rod Ends for the GR86 BRZ GT86 FR S allows for bumpsteer adjustment by allowing the tie rod end pivot to be relocated with the use of spacers. On lowered cars, this results in less dynamic toe change (aka bumpsteer) as the suspension compresses (bump) during cornering and over rough roads, resulting in more predictable handling, less tire shoulder wear, and better stability over rough roads and track curbing.