Allstar Performance 1/4" 1" Piece Control Arm Shim Bar 355003 Slider boxes commonly used for

Slider boxes commonly used for trailing arms

3/8' NPT inlet and outlet ports

3 more per stack than the Speed Stack 7 system

2005-2006 GMC Envoy XL

Allstar Performance 1/4" 1" Piece Control Arm Shim Bar 355003 Slider boxes commonly used forDual mount shims fit between the upper control arm and chassis mount to adjust camber. One piece design works with most mounts control arms with 6" bolt spacing using 1 2" mounting hardware. Sold each. Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers worldwide have come to rely on the