BMW 1 SERIES F20/F21 REAR SUBFRAME REAR MOUNTING BUSH (ROAD) BMW 5 SERIES GPF-Back (Rear Box Delete) Test

GPF-Back (Rear Box Delete) Test Results:

With the help of additional air baffles

Protects headlight against stone chips

Gains of +18 FT-LBS TQ / +11 WHP on a stock tune with an intercooler

BMW 1 SERIES F20/F21 REAR SUBFRAME REAR MOUNTING BUSH (ROAD) BMW 5 SERIES GPF-Back (Rear Box Delete) TestPFR5 422 PFR5 422 is a full replacement bush and is made using our Yellow 70A durometer material, recommended for standard or mildly tuned road cars. For inserts that fit into the OE bush use PFR5 421 for 33316758260 or PFR5 1921 for 33316792510. OEM Part Number: 33316758260 OEM Part Number: 33316792510 OEM Part Number: 33312283383