FS: Compression arms w MPP caster adjustable bearings & OEM compression bushing

[superflyrolla]

Selling left and right lower compression control arms from Model 3. They have the MPP caster adjustable bearings pressed in. Used for 5 months. The right arm is original OEM arm with <40k miles, the left shinier arm was a replacement with <5k miles. The extra caster is great for handling but I’m tired of the NVH for daily driving really bumpy roads. $250

I also have a spare OEM style rubber compression bushing. Cheaper than buying a whole new arm if you have one torn. $40

 

[mprat1985]

damn, sick deal. Would have been all over these last week! I just paid $400 for these and $100 for a spare set of arms.

 

[superflyrolla]

Arms are sold. OEM bushing up for grabs.

 

[dfwatt]

Selling left and right lower compression control arms from Model 3. They have the MPP caster adjustable bearings pressed in. Used for 5 months. The right arm is original OEM arm with <40k miles, the left shinier arm was a replacement with <5k miles. The extra caster is great for handling but I’m tired of the NVH for daily driving really bumpy roads. $250
View attachment 804787

I also have a spare OEM style rubber compression bushing. Cheaper than buying a whole new arm if you have one torn. $40
View attachment 804788

I know these have sold already and I hate to bother you but I'm surprised to hear that this bushing actually introduces extra nvh. Could you clarify just exactly how much the ride was deteriorated?

 

[superflyrolla]

Specifically clunks when rebounding on cracks in the pavement especially on a stretch of road I have to drive to work every day. Never an issue on smooth pavement or highways. I’m 100% certain it’s the bushings as I wasted plenty of time and money playing guess and swap mechanic. My hypothesis is that with these you have nothing holding the arm in a stationary position Big bumps can make the whole arm flop between the stops on either the ball joint or spherical bushings.

 

[dfwatt]

Specifically clunks when rebounding on cracks in the pavement especially on a stretch of road I have to drive to work every day. Never an issue on smooth pavement or highways. I’m 100% certain it’s the bushings as I wasted plenty of time and money playing guess and swap mechanic. My hypothesis is that with these you have nothing holding the arm in a stationary position Big bumps can make the whole arm flop between the stops on either the ball joint or spherical bushings.

Many thanks!

 

[superflyrolla]

Sketch of my hypothesis. Should be no degradation of function, but could be where nvh comes from.

 

[DrZoidberg]

Where did you buy the OE compression arms? I think I am about to go back as well. I have the same exact noise and diagnostic headache with these. The last auto x seems to have made it worse also. It is like the bearing breaks in and more easily flops between it's limits on slow speed rough road.

 

[superflyrolla]

Well I actually have a spare set from eBay if you’re interested? $200? They took months to arrive so I went and bought some from a service center for $320/set. Rock Auto is cheaper but they’re often out of stock.

 

[Lokdown]

Sketch of my hypothesis. Should be no degradation of function, but could be where nvh comes from.

View attachment 816162

Thank you for the explanation! I was trying to resolve the issue with the mechanics but had no luck (we thought it was an installation issue... lots of $$$ and time were spent as a result). The final solution was to replace it with the OEMs.

In Hong Kong, we have uneven mountain roads everywhere and the *LOUD* clunking noise drove me crazy and freaked my passengers out. I wish MPP could explain the cause of the NVH better/in detail on their website.

The whole MPP Caster experience was pretty frustrating, considering the rest of their offerings are amazing.