[HP Autosport]

Okay, so we have done the E9X front M3 tension rods, lower wishbones, and anti-roll bar. Moved on to the rear of the vehicle and done the guide rod, upper camber links, subframe bushings, and the rear anti-roll bar.

It's time to sort out the remaining rear-end pieces, up the spring rates and speed up the respond time on both the spring(lighter springs) and dampers. However, the last piece to be addressed will be the rear toe link, and we are working very closely with "orb" to finalize on the design, this particular R&D will take a few months.

Back to the other rear-end pieces....this process will take several days or maybe longer depends on how much time we have. Rear E9X M3 light weight alloy lower camber links will replace the heavy 135i/335i steel counter parts. The M3 camber link is a good 2 lbs!!! lighter per unit and of a much stronger design with less flex. The dampers will be better positioned to have a quicker reaction time to bumps and no longer be in the soft and flexible 135i/335i rubber saddles. Coil-over style spring with helper spring, proper spring stack adapters, and spring thrust sheets will be used. We will start with a rate of 784 in/lbs and move up from there. Dampers will be Koni double adjustable units valved properly to handle the spring rates we toss at them.

Here are some photos...notice the difference between the E9X M3 lower camber and the 135i/335i piece.

Added a new photo here...R&D is almost done!

[scollins]

Nice! "Good things come to those who wait" seems to be working out for me.

Keep up the great work!

[andrew@southernBM]

Wow, great work, keep up the development HP

[LaYzEe]

Originally Posted by scollins

Nice! "Good things come to those who wait" seems to be working out for me.

Keep up the great work!

+1!!!!!!!!!

cant wait to hear more news about this

[stressdoc]

It makes me wish BMW had just made all the E9x with these quality aluminum parts to begin with and raised the price a couple hundred $.

[flukey]

I'm wishing some aftermarket company will develop upgraded front suspension components for the XI folks!

[mwahlert]

when you see all of these individual m3 suspension components you start to understand why the m3 is so much more expensive than a e9x

i don't understand why they didn't just use the same components across the entire platform and bump the price a couple of bucks across the board...

[cyphr]

Originally Posted by mwahlert

when you see all of these individual m3 suspension components you start to understand why the m3 is so much more expensive than a e9x

i don't understand why they didn't just use the same components across the entire platform and bump the price a couple of bucks across the board...

Although the m3 and 335 share the same chassis, you're pretty much comparing apples to oranges. The m3 is designed to be a track machine, whereas the 335 is marketed more as a sport touring car. It's a bit much to ask for the same suspension components for cars that serve different purposes. But that doesn't mean these won't be on my wishlist!

[Fraggy]

Ok STOP STOP STOP!!!!! LOL

I cant keep up with all that I need to do to my car

[flukey]

Originally Posted by Fraggy

Ok STOP STOP STOP!!!!! LOL

I cant keep up with all that I need to do to my car

Neither can I! I want all these rear M3 kits...

[HP Autosport]

Originally Posted by Fraggy

Ok STOP STOP STOP!!!!! LOL

I cant keep up with all that I need to do to my car

We promise this will be the next to last thing we are developing for the 335i suspension!

[mwahlert]

wait - i'm confused - are you guys designing your own part? the m3 part can't be used like the front suspension components?

[HP Autosport]

Originally Posted by mwahlert

wait - i'm confused - are you guys designing your own part? the m3 part can't be used like the front suspension components?

Perhaps R&D is a better term. The components look like they will bolt on, but in reality many parts will need to be added to make it all work properly.

We have to figure out which spring diameter, height, and rate to use. Damper style and valving also had to researched.

The final phase will be completely from scratch.

Stay tuned!

[seccsc]

Subscribed.... I can't wait to hear the updates.

[Chowbow]

Wait, so is this basically the M3 lower control arm we're seeing? I know that the rear shocks are different, the lower mounting points are as pictured with the shock/damper installed. I've never actually went to look at the M3 LCA though.

For current non-M owners though that would mean getting at least a different set of rear shocks that are M3 specific, right?

And really, not to throw fuel into the fire, but I remember seeing these from Turner. It utilizes the stock 335i LCA, but you take out the rubber shock mount and use these solid ones: http://www.turnermotorsport.com/html..._ID=TSU9006RU2. They have a matching upper RSM to match too. Just something to ponder.

[Chowbow]

Oh, and great work BTW.

[Mr. 5]

That looks to be a very nice quality product!

[HP Autosport]

Originally Posted by Chowbow

Wait, so is this basically the M3 lower control arm we're seeing? I know that the rear shocks are different, the lower mounting points are as pictured with the shock/damper installed. I've never actually went to look at the M3 LCA though.

For current non-M owners though that would mean getting at least a different set of rear shocks that are M3 specific, right?

And really, not to throw fuel into the fire, but I remember seeing these from Turner. It utilizes the stock 335i LCA, but you take out the rubber shock mount and use these solid ones: http://www.turnermotorsport.com/html..._ID=TSU9006RU2. They have a matching upper RSM to match too. Just something to ponder.

In addition to Orb's reply...Those are meant for racing only and will transmitt much more impact harshness and noise to the cabin, not to mention you must purchase a race damper using Spherical Bearing or Rod-End to complete the install.

[HP Autosport]

Originally Posted by Chowbow

For current non-M owners though that would mean getting at least a different set of rear shocks that are M3 specific, right?
.

We will offer a couple of different coil-over packages with our custom dampers and springs, either in a 335i or 335i/M3 style damper combo.

[Chowbow]

Originally Posted by Orb

The BMW links cost less than the turner adapters and a much better solution.

Orb

Originally Posted by HP Autowerks

In addition to Orb's reply...Those are meant for racing only and will transmitt much more impact harshness and noise to the cabin, not to mention you must purchase a race damper using Spherical Bearing or Rod-End to complete the install.

Originally Posted by HP Autowerks

We will offer a couple of different coil-over packages with our custom dampers and springs, either in a 335i or 335i/M3 style damper combo.

Good to hear guys. Just a suggestion... The upper shock mount, in my experience, is a weak point too. The bushing is soft and in more than one instance it has gotten bound up between the shock and the body of the car. I don't think the Turner motorsport upper RSM is quite the solution, and it's incredibly expensive, but maybe something you guys can improve on?

Harold, good to hear a customizable solution is coming.

[HP Autosport]

Originally Posted by Chowbow

Good to hear guys. Just a suggestion... The upper shock mount, in my experience, is a weak point too. The bushing is soft and in more than one instance it has gotten bound up between the shock and the body of the car. I don't think the Turner motorsport upper RSM is quite the solution, and it's incredibly expensive, but maybe something you guys can improve on?

Harold, good to hear a customizable solution is coming.

Haven't seen any rear upper damper mount failures onthe E8X/9X chassis yet, but will look into it.

Harold

[Chowbow]

Originally Posted by HP Autowerks

Haven't seen any rear upper damper mount failures onthe E8X/9X chassis yet, but will look into it.

Harold

It happened on mine during an autoX. It busted the bushing that goes on the "shock side" of shock mount. It did not affect the "trunk liner side" bushing.

It happened on a pretty rough site with lots of elevation changes. It seems the bushing got unloaded and shifted a bit when the suspension became fully unloaded at the peak of an undulation. Then, when the weight of the car came back down to load the suspension, the "nipple" on top of the bushing had shifted underneath the sheet metal and the weight of the car was smashing down on that nipple, destroying the bushing.

In fact, a tougher polyurethane bushing with a taller nipple might be enough to prevent that in the future.