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JRZ RS Pro Silent Edition Suspension for GT-R from Forged Performance

April 15, 2010 Comments off

JRZ has established a solid reputation for quality suspension that works extremely well on the GT-R at the track. While the suspension is also great for street GT-Rs some users experience a noisier than expected ride due to the use of solid top mounts. This user feedback has been taken and JRZ are now announcing a new version of the RS Pro suspension known as the RS Pro Silent Edition.

By combining the track proven goodness of the JRZ race suspension and the OEM top mounts you can get a ideal high performance trackday/circuit use suspension without sacrificing streetability.

Some of the features of the RS Pro suspension are:

  • 22mm rod strut, 16mm rod damper
  • Mono tube
  • Double Adjustable Rebound and Compression
  • Precision CNC Machined Top Mount Adapter
  • Adjustable gas pressure
  • Piston sized for high performance
  • Street compliance valving
  • Precise canister
  • Large adjustment range
  • Fixed hoses for easy mounting
  • Steel piggyback

Here’s a bit more information direct from the announcement/release:

The RS Pro has a remote canister with a progressive blow off system. Progressive blow off allows for a stiff compression valving while maintaining smooth response. The result is a damper that provides ultra solid platform with smooth bump compliance. The JRZ standard large 22mm piston rod works in concert to maximize blow off valve response to great chassis control without using a high spring rate in strut applications. In damper applications the piston rod diameter is 16mm to achieve a balance between ride and control. The monotube design makes use of our unique RS Pro piston. By moving more fluid than our standard clubsport damper, the RS Pro achieves a higher level of chassis control. To customize track to track setups and tailor the chassis to the JRZ RS Pro has an extra large adjustment range. Each adjustment is designed to be an even step giving you predictability when making changes. JRZ clubsport dampers are designed to give the chassis tuner ultimate control.


The design of the RS Pro takes you to the next level. Stiffer cars with higher levels of power demand the control JRZ can supplies. With the control of gas pressure charge as well and compression and rebound adjustments, the RS Pro will get the most out of your high performance car. The JRZ RS Pro is shipped as a bolt on kit with installation instructions and always comes with our world renowned personal service JRZ.
Recommended applications:

  • Highly modified Street/DE
  • Experienced Club Racing

Sounds good? If you’re interested you can pickup your set from Forged Performance, visit the link below for more information there. Retail price is set at the $5530 mark.

Link: Forged Performance Website

JRZ Suspension for Nissan GT-R Available Now

March 3, 2009 Comments off

JRZ finished up development on a range of coilover suspension for the Nissan GT-R recently and it’s now available to buy through JRZ dealers. Forged Performance are the first dealer to get their hands on stock for the GT-R and they gave me a heads up on the details.

Designed for a range of applications from street to circuit, the Nissan GT-R suspension is made from the same technology used in 2009 24hrs of Daytona GT class winning suspension from JRZ.

Circuit tested and tuned for the GT-R by racing drivers as well as the JRZ engineering team, each set will come with custom spring rates depending on your intended application.

The JRZ Suspension is available in the following specs:

Here’s a rundown of some of the main features of the JRZ Nissan GT-R suspension sets:

  • Billet machined front and rear fork, lighter and stiffer
  • Right side up mounting for easy rebound adjustment
  • Piggyback or with remote canisters on hoses
  • Cable rebound adjuster extensions in the rear, adjust rebound with the stock interior installed.
  • Spherical bearing upper mounts
  • Improved high performance and circuit driving without sacrificing street driveability

A serious amount of R&D behind this suspension for the money really. For more information and for pricing, check out the Forged Performance website at the link below.

Link: JRZ Suspension Website
Link: Forged Performance Website

Update: GT-RR have let us know that they’re also a JRZ distributor in the US, you can browse their wares at this link.

GT-RR Debuts New Suspension Package

May 11, 2011 Comments off

The guys over at have furthered their brand_RR lineup of parts with this new suspension. GT-RR has a history of working with the top producers for their projects, having also worked on collaborative projects with Amuse and Cosworth. In this case they’ve enlisted two of the leading suspension component producers to partner with them on the project. JRZ was sourced to provide the desired specification shocks for the system. Swift Springs of Japan was included to provide the 8 springs which are included (main and assist springs on each corner).

GT-RR calls this suspension their Ultimate Spec. They label it that because they’ve taken what they consider to be the best of the shock and spring world and combined it with a variable ride height lift system. The result they say is the ultimate suspension for GT-Rs which are used on both street and track. The suspension allows 3 inches of lift at the push of a button which allows for a low ride setting but for instant clearance upon demand. There is a video of their 2012 GT-R using the lift system which can be seen below.

Swift Springs out of Japan has been supplying Nissan’s official GT-R Super Taikyu team with springs and also supplies for Super GT race cars. GT-RR has told us that Swift and JRZ has both had a considerable hand in determining the final specifications of this suspension.

You can find more information on this system as well other JRZ and Swift products at GT-RR.

Link: Suspension kit

Link: JRZs on GT-RR

Link: Swift on GT-RR


Switzer’s Animal 800 Horsepower Streetable Trackday Star

April 10, 2010 Comments off

Switzer Performance Innovation have put the finishing touches on their most recent Switzer P800 based Nissan GT-R build up. The goal of this build was one that will resonate with many an R35 owner in that, while big things will be expected on the circuit, a comfortable drive to and from is a must.

To get there the decision was made to lift horsepower, lower weight and improve handling, all sensible checkboxes to tick to wind up with a great drive but there’s also a lot of pitfalls to look out for along the way.

Fortunately the guys at Switzer have the knowledge and experience to do it right the first time and chose great components to do it with. Some of the highlights of which are the AP Racing carbon rotors which save loads of unsprung rotating mass at each corner, in-house tuned JRZ suspension and a Aeromotions active rear wing.

For full build details and more information, click through the jump for the full press release below…

Link: Switzer Performance Website

Read more…

Dell Equallogic GOTO:Racing GT-R Impresses at Super Lap Battle Against Steep Competition

November 12, 2009 Comments off


If you guys have been keeping up with the GOTO:Racing time attack Nissan GT-R build over on NAGTROC you’d have heard about their recent testing and tuning successes.

Thanks to a new tune, the car is now making a mammoth 787hp at the wheels and 721 lb/ft of torque. The Super Lap Battle was the perfect opportunity to see how well the GT-R could make use of the new power.

The guys @ GOTO:Racing have written up their drama filled experiences so I’ll hand over to them, don’t forget to click through the jump to read the whole thing…

The GOTO:Racing crew had a busy mid week event overcoming some serious issues to bring home a very respectable lap time at Buttonwillow Raceway at the Super Lap Battle. The event started with with some semi serious technical problems, and progressed into a very serious technical problem. The first session out Brian Lock, lead driver for GOTO:Racing, reported major clutch slip, bad enough that the car could not be driven at speed. Upon the cars arrival in the pit lane fire was seen under the hood of the car as the heat shielding of a turbo line was smoldering. To make matter worse, Brian also reported that the car was getting serious rear brake lockup, and the car was way off pace.


Images: GOTO:Racing Website

Read more…

Freedom Autosport and Switzer to Enter 2009 One Lap of America

April 28, 2009 Comments off


Can you believe it’s been a full year since Tire Rack One Lap of America 2008? Well believe it and get ready because it’s right around the corner and this year looks to be especially exciting.

For those not in the know, the “One Lap” is a annual week long cross country endurance motorsports competition. It pits drivers against each other in time trials for almost 20 legs in more than 3,200 miles of racing and traveling in a single week. Tires are controlled and entrants get only one set for the week but car modifications are allowed.

Each entrant is entered into a class dependent on what their vehicle was delivered from the factory with. For the GT-R that puts it in the SSGT1 category with cars such as the Z06, Porsche 911 and Dodge Viper. Modifications, no matter how insane, do not change your class.

Last year a completely standard 2009 GT-R finished 11th but was a serious contender for 5th overall if not for an unfortunate DNF awarded in one leg. The resounding footnote from 2008 was this quote from GT-R pilot and Car & Driver editor Tony Swan:

The bottom line: whatever all you Corvette and Porsche zealots may say, the GT-R is a serious player in the supercar game. It’s a formidable sports car fast and competent, with cutting-edge technical sophistication.

Tony Swan, Car & Driver

This year the GT-Rs wont be so timid.


This Year…

Derek Whitis from Freedom Autosport has been combining forces with the tuning kings Switzer Performance to build their GT-R to compete at the very top tier, the seriously tuned realm where the Hennessey Vipers dwell and the modified Porsche 911 Turbos reign.

Making in excess of 700 awhp, the Freedom Autosport GT-R has the full Switzer P800 Performance Package which features upgraded turbos, upgraded intakes, bigger fuel injectors, bigger intercoolers and a full ECU tune.

Add to that lightweight panels from Password:JDM, active aero surfaces by AeroMotions, and components from Performance Friction & Motorsport Brake Specialists, STILLEN,, Forged Performance, Kraft Nissan of Tallahassee, WillAll Racing, and JRZ suspension the package is truly potent.

This year we will be covering the One Lap again so stick around and check back for updates as it will certainly be a heated battle for the top places this year.

If you’re interested to see the One Lap in person, admission is free to the circuits, check the schedule after the jump to see if there’s one near you.

Complete press release after the read more link below…

Link: Tire Rack One Lap of America Website
Link: Switzer Performance Website
Link: Freedom Autosports Website

Read more…

Forged Performance to Enter Redline Time Attack Series 2009

March 18, 2009 Comments off


Forged Performance have been spending a lot of time at the track with their GT-R and have been turning some great laptimes with it in both stock and then mildly modified form. Having only changed the wheels, tires, suspension, ECU tuning and exhaust they’re read to take on some highly modified beasts in the extremely competitive Modified AWD class of the Redline Time Attack series 2009.

Last year saw some top level workshops enter their highly modified Evos and STis but this year should see a few GT-Rs I’d say.

The Redline Time Attack Series 2009 begins on June 20th with round #1 at Autobahn Country Club in Joliet, Illinois.

For more information check out the entire press release after the jump.

Link: Forged Performance Website
Link: Redline Time Attack Series Website

Read more…

Forged Performance & NAGTROC Hold Biggest GT-R Track Day Yet

March 2, 2009 Comments off

Well known Nissan parts and tuning company, Forged Performance, in cooperation with NAGTROC and Koni Challenge Team Freedom Autosport, successfully completed, quite possibly the largest GT-R-only track day in the world.

On February 23, 2009, no less than 21 GT-R’s made the pilgrimage to Virginia International Raceway in Danville, VA to tackle this world renowned race track. All skill levels were invited to attend, and the event went off without incident. All the GT-R’s ran strong and reliably all day long, and many of the top drivers putting down some impressive lap times in fairly stock cars.

In addition to the seemingly unlimited amount of track time, Bryan Hise from JRZ Suspension, hosted a suspension tech session which highlighted some of the considerations involved when modifying the GT-R’s suspension system. JRZ equipped GT-R’s set the fastest laps of the day, and attendees were invited to ride along and experience the track at speed.

Special thanks to Derek Whitis and his team, for their generous hospitality, and all the NAGTROC members that made this event most memorable. Forged Performance hopes to make this a bi-annual event, so look for details on the upcoming Nov, 2008 VIR NAGTROC track event.

Thanks to Sharif from Forged Performance for letting us publish this update and for sourcing the photographs for use on the ‘blog.

Link: Forged Performance Website
Link: NAGTROC photo thread
Link: Team Freedom Autosport