Porterfield Brake Pads for 2006 SCION xB 19x9.5 Do I need to flush

Do I need to flush the AC lines before installing this

Do I need to flush my coolant system before installing this

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Hard panel construction - Built to handle daily visibility and weather

UPC : 846959046535

Porterfield Brake Pads for 2006 SCION xB 19x9.5 Do I need to flushPorterfield Brake Pads for 2006 SCION xB Porterfield R4 Porterfield R4 Carbon Kevlar based brake pads were fully designed for heavy duty extreme motorsports use. Its one of the the few true motorsports competition pads available on the market today. The carbon based semi metallic R4 brake material allows the brake pad to absorb huge amounts of heat and dissipate it quickly and evenly over time. The Carbon Kevlar material also allows the brake pad to