BMW 1 Series (E81/E82/E87/E88) 135i panel filter Panel Filter:Panel Filter replacing the restrictive steel 50mm

replacing the restrictive steel 50mm link pipe with a full length lightweght alloy pipe with 63mm bore

These are a direct replacement for the standard rear discs

STOP SPINNING YOUR WHEELS

featuring aluminium fully adjustable with rubber bush top mounts on the front and with aluminium and rubber bush top on the rear

This discharge can be heard as a distinct ‘dump valve’ hissing sound as it vents to atmosphere or back into the intake depending on the application and ECU airflow regulation

BMW 1 Series (E81/E82/E87/E88) 135i panel filter Panel Filter:Panel Filter replacing the restrictive steel 50mmPanel type Unique Panel Dimensions 231mmX205mm