VW Up! GTI, Skoda Citigo TSI PF85K-1009 Audi > RS4 > B9 progressive rate spring that can

progressive rate spring that can allow for the retention of boost pressure from 7 to 22 PSI depending on the individual user's application and level of adjustment

with a larger smooth internal bore to improve engine efficiency

0 TSi engine

A complete set of Caliper sliders and bolts to fit Forge Motorsport 6 Pot caliper

VW Up! GTI, Skoda Citigo TSI PF85K-1009 Audi > RS4 > B9 progressive rate spring that canVW Up! GTI, Skoda Citigo TSI PF85K 1009 Fits all turbocharged models, and all post 2016 VW Up! Included within this pack are the following parts: PFF85 201 Front Arm Front Bush PFF85 1202 Front Arm Rear Bush PFR85 1910 Rear Beam Mounting Bush PFF85 1922 Lower Engine Mount Insert