This also aids in valve & guide cooling which further extends service life in demanding environments

BMW F20 / F21 / F22 / F30 / F32 / F33 / F36 rear subframe mod kit will allow you to adjust rear grip level by changing the position of the #7 arm

Subframe bushings with sperical bearings

Dependent on rim width and ET

38mm GenV UltraGate38HP – TS-0551-1312

JR Wheels JR28 21x10,5 ET15-55 5H BLANK Hyper Black CB: 74,1 JR39 This also aids in valvePCD: 5x108, 5x110, 5x112, 5x114. 3, 5x115, 5x118, 5x120, 5x127, 5x130 ET: 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55