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stillen sway bars

STILLEN is excited to announce the release of the Front and Rear STILLEN Sway Bar Kit for the +2023 Nissan Z.

Nissan Z STILLEN Sway Bar Kit

Product Features

  • Front & Rear Sway Bar Kit
  • Reduces Body Roll & Improves Cornering
  • 5-Way Adjustable Front Bar (21-48% Stiffer)
  • 3-Way Adjustable Rear Bar (37-70% Stiffer)
  • Constructed From High Strength Aircraft Grade Steel For Extra Durability
  • Powdercoated Finish For Good Looks and Corrosion Prevention
2023 Nissan Z Front STILLEN Sway Bar

FRONT

Nissan Z Rear STILLEN Sway Bar

REAR

Front and Rear Sway Bar Kit

One of the best ways to improve the handling of your Nissan Z is with a set of STILLEN Sway Bar Kit. Whether it’s the first step in your suspension modification, or the finishing touch to a complete overhaul with coil overs and control arms, sway bars are one of the most important aspects of fine tuning your cars handling characteristics.

2023 Nissan Z Front STILLEN Sway Bar

FRONT

Nissan Z Rear STILLEN Sway Bar

REAR

Whether on the track, touring through a windy road in the country side, or even around town, STILLEN Sway Bars will dramatically improve your cars cornering, stability, and handling giving you more confidence in your cars ability to stay firmly planted.

Features of STILLEN Sway Bars:

  • Retain nearly factory outer diameter. By keeping the factory diameter of the tube this allows the end user to reuse the factory bushings as opposed to aftermarket urethane bushings which are prone to squeaking and require more regular greasing and maintenance.
  • Stiffer bar construction. While staying with an O.E. outer diameter STILLEN uses a thicker wall material to gain a stiffer rate. This stiffer rate reduces body roll and leaves the car with a more planted and confident driving experience.
  • Retains factory style bushing collars which prevent the sway bar from walking or moving during hard cornering.
  • Manufactured by STILLEN in Costa Mesa, CA. With in-house manufacturing, STILLEN is able to check the quality of the bars throughout the production process from material selection to final packaging.
  • Completed with a brilliant red powder coat finish offering great looks and corrosion prevention.

Bar details:

  • NISSAN Front Sway Bar 640 @ 1″ travel
  • STILLEN Adjustable Front Sway Bar
  • Position 1: 780 lbs @1″ travel
  • Position 2: 860 lbs @1″ travel
  • Position 3: 950 lbs @1″ travel

+2022 TOYOTA TUNDRA 3.5L TWIN-TURBO V6 TRUCONTROL BY STILLEN INLINE POWER MODULE - TC201001

TruControl by STILLEN Inline Power Module for the +2023 Nissan Z

The TruControl by STILLEN Inline Power Module is a quick and easy way to add more power to your Nissan Z with the V6 VR30DDTT engine. It makes great power from the factory and the TruControl by STILLEN Inline Power Module is a great way to add even more power for a low cost and simple installation.

We achieve this power by integrating the Power Module into the factory wiring harness and adjusting certain parameters to increase boost pressure and make significant power/torque gains across the entire power band. Installation only takes about 15 minutes and does not require any special tools.


Nissan Z STILLEN Cat Back Exhaust Say Bars

+2023 Nissan Z Street Series STILLEN Cat-Back Exhaust

STILLEN is excited to release the cat-back exhaust system for the 2023 Nissan Z.  During the development of this exhaust system STILLEN engineers went through multiple different exhaust configurations and prototypes determine what would provide the best performance, best flow, and best sound.  

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How to Pick the Perfect Aftermarket Swaybars

Every week our automotive experts get questions about swaybars from automotive enthusiasts.

No wonder…swaybars, a.k.a anti-roll bars, are a popular and cost-effective way to significantly improve vehicle handling in corners, through slaloms and during evasive maneuvers.

There’s no one-size-fits-all answer to the question: “Which swaybar is right for me?” Picking your perfect swaybar requires consideration of key factors including:

  • The make and model of your car or truck
  • How and where you’ll drive it
  • What you hope to gain from suspension upgrades like sway bars

This sway bar buying guide will help you decide which anti-roll bars are right for you.

Soon you’ll be on the road to happier handling!

Stillen sway bars shown on Infiniti Q50
You can enjoy simple, cost effective handling improvements with a set of STILLEN sway bars

How Do You Drive, And Where Are You Driving?

By which we mean:

  • The best sway bar for you depends on how you’ll use your vehicle. Is it your daily driver, canyon carver, weekend track car, full-time race car, rock crawler or desert mauler?
  • The right sway bar is part of an integrated suspension system that reflects your primary vehicle use. For track days or racing, the optimal suspension setup may include shocks, springs and wheel alignment changes along with aftermarket sway bars.

THE BASICS – What Sway Bars Do

So what is a swaybar exactly? Simply put, it’s a metal crossbar that ties the driver and passenger side chassis and suspension together. When a car is traveling straight down the road or track, a sway bar has little effect on handling.

But as soon as you crank on the steering wheel and enter a corner, a sway bar ‘springs’ to life to help control the weight shift that occurs during cornering.

Here’s how a swaybar works:

  1. As your vehicle turns into, say, a left-hand corner, a portion of vehicle weight transfers (‘rolls’) to the right-hand side of the vehicle.
  2. This rolling effect loads the suspension, steering and tires on the right-hand side of the vehicle. Some side loading is desirable and necessary as long as it’s controlled.
  3. A sway bar helps control this rolling effect by twisting along its axis as the chassis and suspension moves.
  4. As the bar cycles through its range of travel, it offers progressively more resistance to twisting.
  5. The sway bar’s ever-increasing resistance to twisting works to counter the force of vehicle roll.

Not all Plants are Potted

After installing a swaybar, the effect you’ll notice from the driver’s seat is that your car feels level or ‘planted’ as you take a corner.

This ‘planted’ stance is the result of better weight distribution and traction.

Not only does it feel good, it offers big benefits:

  • A car that’s more planted through a turn allows for better rotation and more control
  • A car that’s more planted lets you get back on the gas sooner, resulting in quicker acceleration out of the turn

With the right sway bars on board, you’ll soon be taking familiar corners at higher speeds than you used to.

And grinning a lot more too.

Stiffer Isn’t Always Better

Is an aftermarket swaybar always necessary?

Given that STILLEN is a leading manufacturer of aftermarket sway bars, our answer may surprise you.

The answer is: No, an aftermarket sway bar isn’t always the best solution for every vehicle, driver or environment.

Here’s why:

  • In most cases, an aftermarket sway bar is going to be stiffer than the factory sway bar
  • In most cases, this is going to improve the performance and handling of the car
  • For most drivers, these improvements are going to make them happy and they’ll quickly adjust to the improved handling characteristics of their car

But we won’t tell you that installing a swaybar is the right thing for all drivers vehicles and situations.

Real World Results May Vary

For instance, suppose you’re looking to improve the handling of your daily driver and you install a sway bar rated at 200% stiffer than stock.

Rather than improve, your cornering performance, ride quality and traction will suffer on real world road surfaces. Potholes, mid-corner dips, and road kill will all fight against your uber-stiff setup.

Say your left side front wheel hits a bump mid-turn. Stock suspension or a moderately stiff aftermarket sway bar will transfer some of the energy to the passenger side front wheel – no biggie.

But an extremely stiff sway bar will transfer much more of the energy – maybe enough to unsettle the suspension and reduce traction by creating tire lift on the inside wheel and excessive sidewall flex on the outside tire.

The swaybar you installed to improve handling can work against you, especially paired stock springs and tires (more on this later).

DSC_0033

Newfound Glory

Even world-class car handlers like STILLEN founder Steve Millen don’t automatically run stiffer sway bars.

Here’s a great example of a situation where an aftermarket sway bar wasn’t optimal for the conditions:

In 2009 the STILLEN rally team headed to Newfoundland, Canada, to compete in the Targa Newfoundland rally with a NISSAN GT R. Prior to the trip, the team engineered new Penske coil overs and new sway bars along with a host of other performance parts designed to enhance the already formidable GT R.

They also packed the factory front sway bar into the trailer.

You might think: “Well Duh, rally car….if you crash you need spares.”

But in reality, the team wasn’t convinced the stiffer sway bars they’d developed and tested on smooth roads during the Southern California summer were going to be suitable for the rough roads of Canada.

Especially when the forecast called for plenty of rain North of the border.

When driving in the rain, tire compliance is key to maintaining traction. When the road is dry and offers plenty of tire grip, you can stiffen the suspension and make the tire work harder.

But when traction is limited, a stiffer setup overworks the tires and traction suffers. Better to soften the suspension and make it more compliant to conform to the road surface.

In the end, the team found that the optimum setup for the STILLEN GTR on the Targa Newfoundland roads: run the OEM front sway bar and the STILLEN rear sway bar.

By retaining the stiffer rear sway bar they reduced the car’s natural tendency to understeer and made the car rotate better through the turns.

The next year when they took the car to the Targa Rally in New Zealand, they re-installed the STILLEN front sway bar and ran stiffer coil springs on the Penske shocks.

The roads in New Zealand are faster and offer more grip even in rainy conditions. The stiffer setup was spot on for maximum control in the challenging environment of rally racing.

Check out the results in this video from the 2011 Targa Rally:

AltimaRearSwayBar-1 Altima Coupe Stillen Sway Bar Up

Moderation for the Masses

For the vast majority of drivers using their vehicles for daily driving, canyon carving or occasional track use, sway bars that impart a moderate increase in stiffness are the best choice. The incremental stiffness will retain factory-like ride quality while offering improved handling in the corners and slaloms.

For even more versatility and fine-tuning, adjustable sway bars might be your best option.

The more adjustability a sway bar offers, the more you can fine tune your suspension to suit your needs and preferences.

What’s more, adjustable sway bars allow you to set up your suspension to favor:

Oversteer (when a car turns more sharply than desired by the driver), or

Understeer (when a car turns less sharply than desired by the driver), or

Neutral Handling (when a turns exactly as desired by the driver)

Illustration of a car in oversteer
Car in understeer condition
UNDERSTEER happens when a car does not turn as sharply as driver intends.

Z Well Adjusted Z

The Nissan 370Z is ideal for explaining understeer and oversteer and for illustrating the versatility of adjustable sway bars.

Check out the stiffness ratings of the 370Z sway bars listed in the below chart.

BrandFrontRearAdjustable
(F/R)
% Stiffer (F/R)Best ForSize (F/R)ColorConstructionEndlinksBushings
StockYesYesNoStockN/A26.5mm/24mmBlackHollowStockStock
NismoYesYesNoN/AN/A27mm/25.5mmBlackHollowStockUses Stock
EibachYesYes2 way / 3 way76, 117% / 67, 98, 130%Street & Light Track32mm/29mmRedHollowNoYes
HellwigYesYesNo / 3 wayN/ATrack & Occasional Street35mm/25.5mmGreyHollowNoYes
HotchkisYesYesNo / 3 way205% / 40, 75, 120%Track & Occasional Street35mm/28mmGreyHollowNoYes
STILLENYesYes5 way/ 3 way21-48% / 37-70%Street & Light Track27mm/25.5mmRedHollowNoUses Stock
Suspension TechniquesYesYes2 way / 2 way55, 88% / 30, 66%Street & Light Track28mm/24mmGreen or BlackSolidNoYes

You’ll notice the STILLEN option is a little different. We conducted extensive (and fun) road and track testing to get a feel for the 370Z and determine the best sway bar setup to optimize handling without diminishing the inherent nature of the car.

Like the majority of vehicles on the road today, for safety purposes the 370Z is set up from the factory to understeer a little.

The reason for this is liability and safety.  Auto manufacturers like Nissan have to build their cars for typical drivers who aren’t trained to handle a car in high-stress situations.

When the average driver experiences understeer, their natural reaction is to panic, let off the gas, and apply the brakes. Conveniently enough, this is exactly how to counter understeer.

With less gas and more brake, the vehicle will slow down, the tires will regain their composure and the vehicle will resume traveling in the desired direction. 

Too bad, because one of the biggest advantages of a rear wheel drive car like the 370Z is the ability to power through turns. With the factory setup favoring understeer, this advantage is lost.

All that beautiful power going to the rear wheels is pushing the car in a direction you don’t want to go.

Using a STILLEN adjustable sway bar, a 370Z the driver can fine tune the suspension to balance and improve the handling of the car.

This balanced feel will a give the Z pilot the confidence to  carry more speed through a turn as they begin to feel the car rotate through the turn as opposed to pushing through it.

Stillen 370Z rear sway bars
STILLEN rear sway bars take 370Z handing from great to superlative.

Through extensive testing and refinement, STILLEN identified stiffness increments we selected offer the 370Z driver great options. The STILLEN sway bars can be adjusted for a good balance of road comfort and crisper handling for spirited daily driving and canyon carving.

2009 370Z Blue Stillen Sway Bars3

At the other end of the spectrum, drivers looking for maximum performance can adjust the bars to a stiffer setting for track days.

2009 370Z Blue Stillen Sway Bars5

All Together Now

Along with a stiffer sway bar, for track or racing use, the key to maximum control and handling on the ragged edge may include shock or spring upgrades, tweaking wheel alignment and selecting the proper tires.
Here’s what the STILLEN experts recommend:

  1. Determine which tires you are going to run
  2. Select the springs you’ll run based on tires, track layout and conditions
  3. Select which sway bar is right for you
  4. Adjust wheel alignment to suit, keeping in mind a more aggressive sway bar usually requires more aggressive alignment settings

For example, for track use you might run an aggressive tire like a Nitto NT-01 or a Nitto NT-05. If you don’t mind running an aggressive alignment specification, a really stiff sway bar should work well.

However, if you’re using your car primarily for road use, you might run tires like the Nitto NT555 or an Nitto INVO. The ideal sway bar will be slightly stiffer than the factory bar. 

Sway Your Opinion

Bottom line: a properly matched set of sway bars will really improve the balance of your car or truck and is a great way to fine tune handling.

The result: major improvement in the joy you get out of hustling your ride through your local canyon roads or on your favorite race track.

Most drivers will be happiest with a moderate increase in stiffness. An adjustable sway bar offers the versatility to fine tune handling as desired.

STILLEN has been designing and manufacturing sway bars in-house for more than 20 years.  We private label manufacture swaybars for some of the largest “suspension manufacturers” in the industry.

We have also manufactured sway bars for OEM vehicle manufacturers as well.

In addition to our swaybar manufacturing expertise, we design and develop complete suspension packages for use on street, track and off-road environments.

Bottom line: you can buy and install STILLEN swaybars with confidence!

Got more suspension questions?

Call one of our Automotive Counselors for expert advice at (866) 250-5542.

Most people know that upgrading your suspension will improve your handling performance. However, what not everyone grasps is that there’s more to your suspension that the springs and shocks. Sway Bars are vital, too.

MOUNTAIN-3_5

In technical terms, a properly matched set of sway bars will really improve the balance of your Nissan 350Z or Infiniti G35 and is a great way to fine tune handling. They also play a critical function by generating maximum tire contact with the road surface. In this feature, we’ll be looking at the workings of a set of STILLEN Sway Bars for Nissan 350Z and Infiniti G35 and what a set of good sway bars can do for your Z or G.

https://www.youtube.com/watch?v=2BuQHa5HXDI

What the sway bar does is limits body roll using the torsional rigidity (or stiffness) of the bar across the suspension. The sway bars redirect the load being forced onto one side of the car’s suspension by resisting the twisting motion that results from one side of the suspension compressing when the other side is extended. In turn, that reduces body roll and keeps more load on the inside tires during cornering. By keeping the inside suspension loaded, the contact patch of the tire is increased, improving handling performance and roadholding ability.

For the vast majority of drivers using their vehicles for daily driving, canyon carving or occasional track use, sway bars that impart a moderate increase in stiffness are the best choice. The incremental stiffness will retain factory-like ride quality while offering improved handling in the corners and slaloms.

Nissan 350Z / G35 Sway Bars - Front Bar on G35
Nissan 350Z / G35 Sway Bars – Front Bar on G35

Too stiff of a setup can actually reduce the independence of the 350Z suspension – in that you can actually restrict the movement of the suspension, which will cause the inside tire to lift in slower and more severe corners if you go too aggressive.

There’s no “one-size-fits-all” answer to what the “BEST” sway bar might be for every single person – the answer varies depending on the car itself, how AND WHERE you intend to drive it and what you are trying to achieve with your suspension upgrades.

As you soften or stiffen a sway bar, the car will understeer or oversteer more depending on whether it’s the front or rear bar, and the car’s natural weight balance. This is why something as simple as a better sway bar can dramatically improve a car’s turn-in, or get it to rotate and oversteer more through the corners.

The more adjustability a sway bar offers, the more you can fine tune your suspension to suit your needs and preferences.

What’s more, adjustable sway bars allow you to set up your suspension to favor:

Oversteer (when a car turns more sharply than desired by the driver), or

Understeer (when a car turns less sharply than desired by the driver), or

Neutral Handling (when a turns exactly as desired by the driver)

On the 350Z and G35 – Nissan engineered the whole chassis around the idea of chassis rigidity and handling performance. Nissan wanted a car that would “stay flat in the corners”, giving rise to the car’s “FLAT RIDE” platform concept.

Since the Z33 Nissan 350Z was engineered for the express purpose of handling performance with a wide 60.4in track and long 104.3in wheelbase that pushed the wheels out to the 4 corners of the car, the chassis is rather stiff to begin with. Given the car’s natural stiffness – Z and G alike- a 200% stiffer sway bar isn’t necessarily an improvement. Rather than improve your cornering performance, ride quality and traction will suffer on real world road surfaces. Potholes, mid-corner dips, and road kill will all fight against your super-stiff setup.

IMG_8675

HOLLOW VERSUS SOLID – Is there a difference? Not really.
Hollow Versus Solid is one of the raging debates among the enthusiast community – some vehemently argue in favor of a hollow sway bar, claiming it’s lighter weight- but the reality is, between a hollow and solid sway bar of the same diameter, the performance is likely going to be a wash.

With a hollow sway bar, the only major difference is that you cannot ‘shot peen’ the inside of a sway bar to relieve the stress on the material, but even then,  the stress that would be relieved via shotpeening is on the outside of the bar anyway.

TLDR: Hollow or solid really doesn’t make much of a difference. At STILLEN, we’ve used both, but in the case of the 350Z and G35, we used hollow bars – 1/4in wall thickness up front, 3/8in wall thickness in the rear.

One of the best options for the Z33 350Z and V35 Infiniti G35 is a set of STILLEN Adjustable Front & Rear Sway Bars (304350) if you plan to mainly street drive your 350Z or G35 and hit the twisties or the track once and a while.

Tuned specifically for Street and Light Track use, the STILLEN Sway Bars for Z33 350Z are 25.4mm front, and 22mm rear, and reuse the OEM Sway Bar bushings. The STILLEN 350Z / G35 Sway Bars are 5-way adjustable front and 3-way adjustable rear sway bars which range from 7-70% Stiffer in front and 37-70% rear.

These settings are ideal for street use but still allows you the ability to dial up the stiffness for racetrack performance. As we said above, you don’t want to be super stiff on the street – the street is not a track and full of potholes, divots and imperfections that will unsettle your suspension if you drive around town race-track stiff.

Designed and manufactured here in house at STILLEN HQ in Costa Mesa, CA, we are able to tightly control every step of the production process and inspect for quality at each stage to ensure an OEM-like quality and fit.

As we said above, a in handling performance for not a whole lot of cash, making a set of 350Z or G35 sway bars a killer bang-for-the-buck proposition.

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TLDR: A properly matched set of sway bars offers a major improvement in handling performance for not a lot of cash and will really improve the balance of your car or truck as well as a great way to fine tune handling. It’s an amazing bang-for-the-buck proposition.

Most drivers will be happiest with a moderate increase in stiffness. An adjustable sway bar offers the versatility to fine tune handling as desired and allows you to better enjoy hustling your ride through your local canyon roads or on your favorite race track.

STILLEN has been designing and manufacturing sway bars in-house for more than 20 years.  We also private label manufacture swaybars for some of the largest names in the aftermarket suspension industry, too. The point is – STILLEN Sway Bars offer performance you can trust.

If you’re interested in a set for your Z or G, call us at 866-250-5542 to speak with our Suspension Specialists, or chat live with the team at www.stillen.com – thanks for joining us! Catch you next time.

Continuing product development on the new Nissan GT-R, STILLEN has produced an upgraded adjustable front and rear sway bar set for the R35 chassis.

gtr304380 STILLEN GT-R SWAY BARS 1

An upgraded sway bar really helps the GT-R keep flat through the corners, and the adjustability in both the front and rear bars allows the driver to fine-tune the suspension to suit driving needs at will.

Here at STILLEN, our Q50 isn’t the only vehicle getting ready for SEMA in the STILLEN performance shop… We’ve also seen a beautiful blue 2009 Nissan 370Z stop by for a new set of STILLEN sway bars.

SEMA Bound 2009 370Z with STILLEN Sway Bars

SEMA Bound 2009 370Z with STILLEN Sway Bars

Slammed & Ready To Roll, Almost

As you can see from the photo above, this SEMA bound 2009 370Z includes a long list of sleek, aftermarket upgrades. None have a bigger impact on the look of the vehicle than the air bag suspension that is installed on this vehicle. While these look great, they can change the handling of the car a bit. To stabilize the car and improve the feel, the owner decided to stop by the STILLEN performance shop to get a set of STILLEN sway bars installed.

STILLEN Sway Bars

Made from aircraft grade steel and finished in a brilliant red powder coat, the durable and incredibly stiff STILLEN sway bars are perfect for reducing body roll and stabilizing your ride. Whether you’re cruising through winding country roads, blazing down the track or just daily driving your vehicle, you will enjoy a noticeable improvement in how your car handles, corners and in overall vehicle stability.

370Z Sway Bar Specs

  • Part Number: STILLEN 304375 sway bar kit
  • Includes Front Sway Bar: Yes
  • Includes Rear Sway Bar: Yes
  • Adjustable: Yes; 3 or 5-way adjustable
  • Finish: Red powder coat for added durability

See It At SEMA

If you’re going to be at SEMA, be sure to stop by to see it this 370Z person after you visit the STILLEN/AP Radi-CAL booth (booth #34273) and checking out the STILLEN Q50 in the lot. This vehicle will be on display in the Direct Lift booth (booth #10239).

STILLEN Sway Bars Installed on SEMA 370Z

STILLEN Sway Bars Installed on SEMA 370Z

Questions? Contact Us

If you have any questions about the STILLEN sway bars featured on this vehicle or any of the other 370Z performance parts we offer, please give us a call. You can reach our experts at (866) 250-5542. They will be happy to answer any questions you have and make recommendations to help you get the most from your vehicle!

STILLEN is proud to announce the 2011-2014 Nissan Juke all-wheel drive rear sway bar is now available.  The STILLEN 2011-2014 Nissan Juke AWD Rear Sway Bar is rear mounted and offers more rigidity than the factory rear sway bar to aid in cornering and vehicle stability.  STILLEN has designed this sway bar to be stiffer than the factory bar which will allow for better turn-in, rotation, and overall improved stability when pushing either a Nissan or Nismo Juke hard through canyon roads, on the track, or even trying to get to work in the morning!

 

 

A common complaint on all wheel drive vehicles is the experience of “understeer.”  Understeer is where you are driving the car spiritedly and the car doesn’t want to rotate through the turn.  Instead the front tires just “push” or “under steer.”  By stiffening the rear suspension, the chassis will be more planted and allow the car to rotate better which gives drivers a more positive feel as they accelerate through turns.

STILLEN Rear Sway Bar.
The STILLEN sway bar for the AWD Nissan & Nismo Juke is:

•    Made out of high-tensile strength steel.
•    Incorporates precision laser cut end link brackets.
•    Finished in a brilliant red powder coat finish.
•    Protects against corrosion and wear & tear.
•    Designed to keep the underside of the car looking great!
•    Backed with a STILLEN lifetime guarantee!

Juke AWD Rear Sway Bar.

To speak with an expert and place your sway bar order, give us a call at (866) 250-5542. You can check out all the STILLEN Sway Bars we carry, or explore all the items we have for sale here at STILLEN.com. You can also schedule anything from a routine maintenance or install to a full scale racing build on the Performance Shop site.