JRZ RS coilover and springs for 987 Cayman - 6SpeedOnline - Porsche Forum and Luxury Car Resource

#1

06-22-2010 | 01:28 AM

wwjd

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Joined: Sep 2007

Posts: 412

From: s.ca, hk, ma, cn

Rep Power: 34

Sold

Category: Steering & Suspension
Price: $3380
Private or Vendor Listing: Private Listing
Part fits: Porsche Boxter/Cayman
Location (State): CA
Item Condition: Brand New
Shipping Information: Item can be shipped

Spring rate: 400 and 450
JRZ RS Retail price at $4499
Swift custom springs retail price at $600
Here's very good deal overall.
Reason of selling: I decide not taking my Cayman to racetrack or autoX, so I decide selling these set up instead. My loss is your gain.
Let me know if you have any question.

<U>Features of the JRZ RS Suspension Kit include:
Double-adjustable coilover front struts, with independent "click" adjusters for rebound and dampening

Double-adjustable rear shocks, with independent "click" adjusters for rebound and dampening (threaded for future rear coilover use)

Fully CNC'd adjustable front camber plates

Eibach Race Springs, front and rear (optional spring rates available in 50 # increments)

Front tender "helper" springs (optional)

Adjustable rear spring adjusters (weight jacking rear perches optional)

Fully CNC'd rear shock mounts with reinforcement plates

</U>

JRZ RS FAQ
Q. What's the difference between a JRZ RS shock and other kinds of shocks?
A. There are a few differences that distinguish a JRZ RS shock:

Wide range of adjustments. Whereas other "adjustable" shocks have similar features of rebound and compression adjustments, few have the wide range which allows JRZs to perform well under street conditions but suitable for the track. This means you can use springs soft enough for the street or stiff enough for racecars, and the shocks have enough tunable range to satiate both extremes and everything in between.
The JRZ RS shock is twin-tube, high-gas, and 2-way. That means they can control both compression and rebound adjustment, independently. No one has ever done this with high-gas pressure. One can adjust the JRZ’s rebound without affecting compression. The advantage of gas pressure is that it stops oil from foaming and provides lifting force for the piston. No one else has figured out how to build a seal that allows gas pressure in a true twin tube. JRZ is the only one in the world that can do this. It’s something they’ve learned at showroom stock racing, and their package now gets the technology to the road.Like most things in the complex, inter-related world of suspension technology, which is an art form on top of some rigid science, the JRZ shock provides a number of benefits other than just rebound and compression.

Q. Who the heck is JRZ?
A. While most aftermarket suspension companies come from an OE background, producing OE replacement suspension, JRZ was founded in 1995 and has been dedicated to race suspension from its inception. After years of successful race experience, JRZ begins marketing products for street driven cars. The products that evolve from this development are the "clubsport" product known as JRZ RS and RS-Pro dampers.
Q. Where can I get parts for JRZ shocks if they require servicing?
A. As history would have it, the parts for JRZ are identical to those used in ProTrax and Moton (both of these companies have beginnings at JRZ) so the internal parts are interchangeable, if required.
Q. How can this system be fine tuned to my requirements?
A. Because of the wide adjustment range of the JRZ shocks, spring rates as little as 400 lbs. all the way up to 1000 lbs. can be used. While some coilover systems have only one spring set (others may have more, similar to a small, medium, large ideology), Eibach manufactures constant diameter spring in rates as low as 25 lb. increments for very specific suspension tuning.
Q. What about swaybars? I like having big fat swaybars.
A. True suspension tuning is not about how much a car leans. There are aspects of suspension tuning that extend far beyond swaybars. For suspension novices, swaybars are the first change in suspension because the use of them makes the car feel different. For true tuning, swaybars are the last item to be added, and typically, only one is changed.
Q. What are helper springs?
A. Unlike the main tender spring that has effect on road feel, the helper spring is used to keep the main spring on the spring seat when the wheel is completely released. This reduces potential spring noise. Installation of the helper spring does not affect the suspension characteristics of the vehicle.

Q. What is a "weight jacking rear" adjuster?
A. The upgraded weight jacking rear adjuster addresses the issue of inconsistent spring rates caused by the bending of the spring during suspension movement. Additionally, the weight jacking rear adjuster also allows for height adjustments from underneath the car, without the need to remove the wheel and unbolting the rear shock to adjust the height.

Last edited by wwjd; 07-08-2010 at 01:58 AM.

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