Option Parts For BD8, It Is An Integrated Aluminum Suspension Mount Used For The Rear Side Of The Front Suspension. By Replacing The Resin Bush (B8-301BS 700), It Supports From 39.5mm To 42.7mm Suspension Pin Distance. By Replacing The Standard Separate Type Of The Kit, The Rigidity Of The Front Area Is Increased, Which Has An Effect On Adjusting The Grip Balance Between Front And Rear And The Steering Response.