Rear Shock Mounts (RSM), BimmerWorld - E30, E36, E46, Z3, Z4 (12mm Shaft)

Our 12mm Spherical Rear Shock Mounts are highly recommended if you have high-quality performance shocks with 12mm shock shafts on your car. If you currently have rubber, polyurethane or upgraded non-solid rear shock mounts, you aren't getting your money's worth - our spherical mounts are the perfect solution.

Your dampers are designed to precisely control all suspension movement, but typical performance rear shock mounts allow approximately 1/2" of uncontrolled movement as the upper shaft mount flexes and moves. With the average road surface imperfection rate of change means you are giving up a lot of control and potential grip. You paid for those shocks, you should make them do the work!

Our 12mm Spherical Rear Mounts have a precision Aurora bearing installed in our billet aluminum carrier, which is slotted to allow for additional tire clearance if needed. The included stainless steel reinforcement plate also makes one-person installation a breeze. 

Fits all E46, E36, Z3, and Z4 models. Some convertibles will require mounting the reinforcement plate underneath depending on clearance. 

Shock Shaft Note: Most adjustable shocks will use a 12mm mount including MCS, KONI Sport, JRZ, etc. Most non-adjustable shocks will have a 10mm shaft diameter including OE, Bilstein, KONI non-adjustable. This mount is also available with a 10mm bearing (see additional products below).

• Highly recommended for use with all high-quality rear shocks
• Allow your dampers to work properly
• Aurora bearing in a BW billet aluminum housing
• Slotted for tire clearance
• Easy one-person installation

Gaskets are recommended, but are not included.

Made in USA BMW Fitments:

3 Series
E30 (84-92) > 318i
E30 (84-92) > 318ic
E30 (84-92) > 318is
E30 (84-92) > 325e
E30 (84-92) > 325es
E30 (84-92) > 325i
E30 (84-92) > 325ic
E30 (84-92) > 325is
E30 (84-92) > M3
3 Series
E36 (92-99) > 318i M42
E36 (92-99) > 318i M44
E36 (92-99) > 318ic M42
E36 (92-99) > 318ic M44
E36 (92-99) > 318is M42
E36 (92-99) > 318is M44
E36 (92-99) > 323ic
E36 (92-99) > 323is
E36 (92-99) > 325i
E36 (92-99) > 325ic
E36 (92-99) > 325is
E36 (92-99) > 328i
E36 (92-99) > 328ic
E36 (92-99) > 328is
E36 (92-99) > M3 (1995)
E36 (92-99) > M3 (96-99)
3 Series
E46 (99-05) > 320i
E46 (99-05) > 323Ci
E46 (99-05) > 323i
E46 (99-05) > 325Ci
E46 (99-05) > 325i
E46 (99-05) > 325xi
E46 (99-05) > 328Ci
E46 (99-05) > 328i
E46 (99-05) > 330Ci
E46 (99-05) > 330i
E46 (99-05) > 330xi
E46 (99-05) > M3
Z Series
E36/7 / E36/8 Z3 (96-02) > Z3 1.9
E36/7 / E36/8 Z3 (96-02) > Z3 2.5
E36/7 / E36/8 Z3 (96-02) > Z3 2.8
E36/7 / E36/8 Z3 (96-02) > Z3 3.0
E36/7 / E36/8 Z3 (96-02) > Z3 M - S52
E36/7 / E36/8 Z3 (96-02) > Z3 M - S54
Z Series
E85 / E86 Z4 (03-08) > Z4 2.5i M54
E85 / E86 Z4 (03-08) > Z4 3.0i M54
E85 / E86 Z4 (06-08) > Z4 3.0i N52
E85 / E86 Z4 (06-08) > Z4 3.0si N52
E85 / E86 Z4 (03-08) > Z4 M