Billetworkz Subaru STI 2004-2021 Black Reverse Lockout | BW-RL-STI-BLK Vehicle Model_M5 They have developed these mounts

They have developed these mounts for competition use

thus improving both performance and sound quality

Required Use with 1

Part #: 288 540 A

The second number is the inner diameter of the hubring (used to match the center hub diameter of your wheel hub)

Billetworkz Subaru STI 2004-2021 Black Reverse Lockout | BW-RL-STI-BLK Vehicle Model_M5 They have developed these mountsBilletworkz STI One Piece Reverse Lockout is the perfect accessory to add to your interior. This Reverse Lockouts include two internal O rings to minimize vibration and rattling. They also include a stainless steel set screw to hold in place, rather than a roll pin. This part is a direct replacement for the OEM reverse lockout and boot retainer. Each Reverse Lockout is custom anodized to provide a unique and scratch resistant layer. Be sure to