Axle Mass Dampers

[El Jefe]

I'm installing the MM LCA relocation brackets this weekend and the instructions say to trim the tab on the back by 1/4". Has anyone just removed them completely? As far as I know, they are only on the car to reduce NVH but do they serve any sort of purpose for performance?

 

[steveespo]

Mine are long gone along with the rear caliper anti groan brackets. No effect on performance and really no added noise.

 

[Johnson13]

Mine are long gone along with the rear caliper anti groan brackets. No effect on performance and really no added noise.

Whats the anti groan brackets Steve?

 

[steveespo]

There is a U bolt and bracket that connects the caliper mounting plate to the axle tubes, there to keep the brakes from groaning when you back up. Not much weight savings but when you change to larger rear discs you have to remove it.

 

[venom52]

Just installed my relocation brackets and left the dampners off. Quick test with no Ill effects at all.

 

[Grant 302]

Mine are removed on my GT. Can't tell any difference, but my car is fairly loud.

The anti-moan brackets don't really seem to help much anyway, IMO. On my last set of rear rotors, the noise got progressively worse through the life of the rotor. I don't expect that to be different with this next set.

 

[dmichaels]

Also removed the weights. No difference that I can tell this far. I also had a slightly bent axle since the day I got the car (finally figured it out and had it fixed). Car is perfectly smooth with the axle weights removed.

 

[El Jefe]

Thanks for all the input guys! Got the front end taken care of last weekend and will battle with the rear this weekend. Will be leaving the axle dampers off.

 

[gww52]

These are long gone on my Boss.
No change in NVH.