BMW 1 Series (E82) 2007-2013 - 510 Series Coilovers Spring Upgrade:Swift Springs If a customer does not

If a customer does not pre-pay and fill out the service form online before shocks are sent in

Replacement of seized external components (not including optional upgrades)

if you have other custom spring rate preferences

you‘ll never have to buy coilovers again

whereas the Concave Flow Digressive Technology has a broad range of 8kg spring rates

BMW 1 Series (E82) 2007-2013 - 510 Series Coilovers Spring Upgrade:Swift Springs If a customer does notCUSTOM. MODULAR. REBUILDABLE. Fortune Auto engineers are consistently chasing improvement and the development of the Generation 8 50 Series damper is no exception. The 510 Series single adjustable coilover is a remarkably sophisticated damper system. Utilizing the highly advanced, Concave Flow Digressive Piston to provide an incredibly dynamic adjustment range along with the ability to upgrade and rebuild; youll never have to buy coilovers again. AT