The 4300 series can be built to customer requirements.  Rebound and hi/low speed compression are adjustable.  Options include hose lengths, inverted/non-inverted designs, quick disconnects.  Custom lengths and applications are available for road cars and purpose built race cars.  All 4300s are built to match customer spring rates and furnished with dyno plots.

Pricing starts at $4500 for struts and shocks.

AST-USA offers full rebuilding and revalving services for AST shocks at competitive prices.  This includes quick turn around when you need it the most.

Current Applications

• BMWs 3 Series (E36, E46)
• Subaru WRX/WRX STI
• Any standard aluminum body coilover shock configuration
• Inquire about others including custom applications