Porterfield Brake Shoes for 1998 GMC SUBURBAN 1500 4WD 11" Rear Shoe Compound:R4-S Will I need to flush

Will I need to flush the system before installing this

Fitment Fits 2014-2020 Lexus IS250 / IS350 / IS300 AWD / IS200t

AFS COMPATIBILITY: Vehicles equipped with AFS (Adaptive Front-lighting System) will require AFS error codes to be coded out for optimal performance

【Strong Material】It made from matte black leather instead of the cheap vinyl material

Porterfield Brake Shoes for 1998 GMC SUBURBAN 1500 4WD 11" Rear Shoe Compound:R4-S Will I need to flushPorterfield Brake Shoes for 1998 GMC SUBURBAN 1500 4WD 11" Rear Shoe 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