QA1 63 Series Shock 7" Front 5C/500R 2120013 The new Ball Spline Drive

The new Ball Spline Drive system

a common result of excessive engine movement

MSD GM HEI Distributor

10" x 11" x 3"

QA1 63 Series Shock 7" Front 5C/500R 2120013 The new Ball Spline DriveThe 63 Series is a sealed non rebuildable version of the 62 Series. These are most commonly used in coil over applications on both dirt and asphalt tracks. The twin tube design gives excellent feel and grip across all track conditions, but they really shine when there is a lack of grip. Built as a spec shock that could be used at specific tracks or series, the 63 Series can be used in any late model or modified. QA1 specializes in high performance