Powerflex Road Series Rear Subframe Front Bush Insert – BMW F20 | F21 1 Series | F22 | F23 2 Series | F30 3 Series | F32 | F33 | F36 4 Series S-AMG (W222) The face of the airbox

The face of the airbox is in direct line with the top of the engine where the turbos are situated

Crafted from prepreg carbon fiber

and power output for engines

if the original or aftermarket wheels are missing that last optical "kick"

Additional 110hp & 150lb/ft on a stock vehicle

Powerflex Road Series Rear Subframe Front Bush Insert – BMW F20 | F21 1 Series | F22 | F23 2 Series | F30 3 Series | F32 | F33 | F36 4 Series S-AMG (W222) The face of the airboxPrices shown are per bush. 2 bushes are required This is a polyurethane insert that fits into and fills the voids in the original bush to reduce subframe movement. OEM Part Number: 33316792509 Suitable for: M135i M140i M235i M240i 335i 340i 435i 440i