Speedway sells the ONLY fully engineered shock mount. The 5/8" forged button head bolt looks good while offering maximum support. The 1-3/4" x 1-3/4" billet aluminum support spacer has internal threads. This allows you to properly support this shock without crushing the bushing like others do, which leads to shock failures. There's a reason major chassis builders use this mount.
Billet aluminum. Includes required washers and nylon lock nut. Mounts sold individually.
916-36010 Instructions (PDF)