AST

The venerable 4000 Series damper stands as AST's entry level, adjustable damper. Using the same internal technology found in the 5000 Series competition sets, the 4000 Series creates near-budget le...

The venerable 4000 Series damper stands as AST's entry level, adjustable damper. Using the same internal technology found in the 5000 Series competition sets, the 4000 Series creates near-budget le...