Fortune Auto 7th Gen 500 Series Coilovers w/ Front Endlinks & Swift Springs (9K Front / 8K Rear) - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2020 Toyota 86 PDM_turbo-inlet-hoses-and-pipes They are then thread rolled

They are then thread rolled after the heat treating process which increases the fatigue strength significantly compared to being thread rolled before heat treatment

For additional information you can find Verus's informative packet here

which is tougher than JWL requirements

4 piston design

once you perform modifications that will increase the power and the boost

Fortune Auto 7th Gen 500 Series Coilovers w/ Front Endlinks & Swift Springs (9K Front / 8K Rear) - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2020 Toyota 86 PDM_turbo-inlet-hoses-and-pipes They are then thread rolledFortune Auto 500 Series Coilovers Bespoke Suspension Systems Fortune Auto engineers were tasked with a focused goal to make the Gen 7 500 series dampers the best single adjustable system on the market at a very affordable price point. All Systems are completely hand built. Fortune Auto insist on building bespoke suspension in order to offer the best quality control in the industry. PLEASE NOTE This is a special order item that is built to order direct