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      07-07-2013, 06:25 PM   #1
RickyBobby
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Asking Price:
USD 1,800.00
Location:
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Item Interest
Up for sale are my AST 4200's. They were recently refreshed with the new DDP (double digressive pistons) and low drag seals ($1000 upgrade). These shocks are really the best of both worlds offering a great street ride when turned down and race like reflexes when turned up. The DDP valving has a huge adjustment range.

Reason for selling: The NASA rules have bumped the M3 to TT3 this year which do not have any shock restrictions. I've upgraded

My original review of the shocks can be found here. http://www.m3post.com/forums/showthread.php?t=489312

Includes shocks, poly rear shock mounts and springs only since I have kept the camber plates and rear spring adjusters for my new setup.

Bang for the buck these are the best performing shock out there and have netted me some very fast lap times.

Shock dynos will also be provided with the shocks. They DDP plots are real impressive.

Price: $2000 shipped (updated since I am now including the swift springs)

Description from AST's literature as follows:

DDP Technology Piston
Our latest digressive piston developed for GRAND-AM gives drivers and race engineers the best of both worlds. Drivers love the low speed damping response and body control, while race engineers love the “blow off” at high shaft velocities. When the rebound adjustment is soft, the damper curve looks similar to an OEM street shock profile. When the rebound adjustment is hard, the damper curve looks like a race shock!
This “Jekyll and Hyde” personality is exactly what AST 4000 Series customers want: soft street ride and race car track performance in ONE shock - all with the turn of a knob!
Lower Drag Seals
High performance seals are a challenge for any damper. They must balance friction and sealing ability while not impacting shock performance and not leaking; a difficult balancing act! While the seal was originally developed for GRAND-AM road racing, AST is taking our knowledge from the track to the street again. Newly redesigned seals decrease hysteresis in the damper and decrease seal drag over 50%.

Let me know if you have any questions.
Thanks!

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Last edited by RickyBobby; 07-22-2013 at 12:01 AM.
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      07-07-2013, 06:25 PM   #2
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Videos of the shocks in action here. (1:52 at Sonoma and 2:00 at Thunderhill with only shock and tire upgrades).




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      07-08-2013, 09:05 PM   #3
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Wanted to take a moment to answer some questions that people have been asking me via PM.

- The rear shocks were rebuilt in October and the fronts were rebuilt in April. I'd estimate 3000 miles on the rears and 1000 on the fronts since I don't drive the car that much these days.

- Specific parts needed to complete the setup:
- Camber Plates (vorshlag - approx $400)
- Rear spring adjusters - ($200 Vorshlag http://www.vorshlag.com/product_info...roducts_id=417 )
- End links (turner $159 - http://www.turnermotorsport.com/p-21...inks-pair.aspx )

Of course my setup notes and shock dynos are also included (priceless )

Let me know if there are any specific questions.

Last edited by RickyBobby; 07-21-2013 at 11:50 PM.
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      07-28-2013, 08:07 PM   #4
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I've decided to include the springs in this sale. The first post has been updated to reflect the new asking price of $2000 shipped. The brand is swift and I've got a few different rates to choose from. I can help the buyer decide based on their setup and usage.
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      07-28-2013, 11:21 PM   #5
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      07-30-2013, 12:30 PM   #6
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Price drop.
$1900 shipped. Someone put these to good use!
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      08-02-2013, 10:34 AM   #7
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Friday bump. These are boxed up and ready to go.
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      08-02-2013, 01:59 PM   #8
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I'm interested, but have you rebuilded them?
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      08-02-2013, 03:13 PM   #9
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Quote:
Originally Posted by raziel5201314
I'm interested, but have you rebuilded them?
Yes, they were recently rebuilt.

SOLD
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