031593A: Rear subframe - rear bush SPORT

This is the rear bush of the rear subframe mount, in polyurethane.

Rubber in this position lets the back of the subframe lift under load. Rear camber and toe move while you are cornering, which is why the car feels vague at the limit.

90 ShA polyurethane — the yellow SPORT compound. StrongFlex build this grade for tuned and lowered cars: the suspension gets noticeably stiffer, the geometry stops moving under load and the car holds its line when you push it.

Polyurethane keeps the geometry where the alignment rack left it — the rear stays predictable all the way to the limit.

Every StrongFlex product ships with the correct grease for fitting.

• 1x 031593A Rear subframe - rear bush SPORT, 90 ShA
• Grease for fitting

Fits:

· BMW 1 I (04-13) E81 / E82 / E87 / E88 rwd / xi / xd
· BMW 1 II (11-19) F20 / F21 RWD / XDRIVE
· BMW 2 I (13-21) F22 / F23 RWD / XDRIVE
· BMW 3 V (04-13) E90 / E91 / E92 / E93 rwd / xi / xd
· BMW 3 VI (13-20) F30 / F31 / F34 RWD / XDRIVE
· BMW 4 I (13-20) F32 / F33 / F36 RWD / XDRIVE
· BMW X1 I (09-15 E84 RWD / XDRIVE
Replaces BMW parts 33316768645, 33316792510. A car takes 2.

031593B is the same bush in 80 ShA red — softer, quieter, the one for a daily driver. Same fitment, same part. Supplied in yellow. Black is available on request — same compound, same hardness.