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*prices in RED
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*prices in BLUE
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PDM Racing is pleased to stock and sell
Circuit Sports Adjustable suspension arms for
the Nissan 240SX.
If you intend to race, drift or seriously
lower your car, adjustable arms are necessary
to help re-align the car to proper specs.
Battle Version arms eliminate all bushings,
so control arm movement is extremely precise,
and solid. No bushing or arm flex.
Circuit Sports arms are manufactured in Japan.
Designed and built by racers for racers. Circuit
Sports is so confident in their workmanship,
that they offer a LifeTime Warranty, against
defects and workmanship.
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Circuit Sports Front Lower Control
Arms
Racers and drifters alike will appreciate these
beefy new adjustable lower front arms. The "Shiznat"
of 240SX front tubular control arms, Circuit
Sports tubular front lower control arms are
much stiffer and beefier than the OEM stamped
steel units and can take much more abuse from
repeated berm bouncing and resist flexing under
full opposite locks while drifting. Kit comes
with everything for install. Same high quality
Circuit Sports fabrication with very durable
Teflon lined mono balls that give minimal bushing
stiction for smooth, proper suspension movement
and much more affordable compared to high end
"name brand" Japanese arms. Dollar for dollar,
these arms cannot be beat.
**Also note that Circuit Sports are now backed
by LIFE TIME warranty against defects and worksmanship.
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Circuit Sports Rear Lower Control
Arms
Circuit Sports rear lower control arms for
S13 and S14 make a great addition on your 240SX
with the Front Lower Control arms. The LCA's
comes with Circuit Sports high quality Teflon
lined stainless pillowball rod ends for durability,
and the ball joint adjustability improves roll
center for drifting and track racing. These
arms are heavier than the stock stamped steel
unit and resists flex and bending with it's
tubular design. Along with almost zero stiction
from worn out, floppy bushings, these control
arms allow your suspension to move freely yet
precisely to ensure controlled suspension movement
through turns and under acceleration and braking.
**Also note that Circuit Sports are now backed
by LIFE TIME warranty against defects and worksmanship.
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Circuit Sports S13/S14 Adjustable Tension
Control Rods
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New Circuit Sports Adjustable Tension
Control Rods are CNC one piece aluminum
body for light weight and strength and allow
you the ability to adjust your caster. They
come with high quality Blue anodized finish
and high quality 3 piece teflon lined rod
ends to give it long lasting quality and performance
without making noise. These arms are direct
bolt in and come with all new hardware.
Adjustable TC Rods are crucial to increase
positive caster on Nissans. Caster is a very
good alignment quality to induce into your
Nissan, as this allows you to reduce your
static camber more, yet when the car turns
in, negative camber will increase which generates
higher cornering ability. Translation: less
inner tire wear when the car is driving in
a straight line which is over 85% of the time,
yet when it comes time to corner, your car
will have enough caster to create good negative
camber to make your car feel like it’s
cornering on rails. Also, having adjustable
caster means you can equalize caster from
left to right on your Nissan to maximize turning
performance both left and right. (On our Hunter
computerized alignment rack, we notice it’s
common to see 240SX’s with left to right
caster specs out by as much as 1.5 degrees.
Some are from curbing accidents, others are
off-balance straight from Nissan Japan!) By
adding adjustable TC Rods, you ensure your
car will corner equally fast turning left,
or turning right.
The TC Rod is the ONLY arm that locates the
bottom control arm on the 240SX. When a car
is under severe braking from 100 mph, the
force on that TC Rod is the most extreme force
that any single suspension component will
experience. So replacing the stock TC Rod
bushings with a spherical bearing, will ensure
under braking your front end will not shimmy
or wander as caster and toe will change from
the TC Rod bushing flexing back and forth.
For example, many of our 300ZX customers complain
of brake shimmy and thinking the rotor is
the culprit, they have their rotors turned.
The shimmy may go away for a bit, but since
the rotor is now thinner with less material,
it is more prone to overheating, which leads
to warpage and pad deposition; thus, the vicious
cycle of shorter rotor turning cycles. Most
often, the culprit is a worn OEM TC Rod bushing
which is a viscous filled rubber membrane,
which is good for comfort and compliance,
but makes for a terrible locator for an arm
that sees such severe duty. Over time, the
stock outer membrane wears from repeated force,
heat and oils. Quite often we see cars come
into our shop with completely blown-open TC
Rod bushings. Changing to Circuit Sports arms
will eliminate this slop, which means faster,
straighter braking, with more control of your
steering wheel.
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Circuit Sports S13/S14 Rear Upper Control
Arms
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| Rear excess negative camber is a problem
for RWD Nissans when lowered beyond 1.75 inches.
The stock eccentric camber bolt has limited
rear arm adjustment, and Whiteline KCA347 rear
eccentric bushings can adjust for medium lowered
cars, but when you start to really slam your
240SX (2 inches or more), you require more rear
negative camber adjustment. Too much negative
camber will drastically wear out the inside
contact patch of your expensive rubber, and
also not allow for maximum braking and acceleration
due to the offset tire patch. The rear end may
handle great, but you’ll burn up your
insides of your tires in a very short time.
Properly correcting this common problem can
be solved by adding Circuit Sports adjustable
upper control arms.
Circuit Sports rear upper control arms are made
from DOM tubing, with zinc coated anti-rusting
threaded adjusters, and high quality 3 piece
Teflon spherical bearings. This very solid piece
of control arm eliminates any excess rear flex
from hard drifting or cornering, and allows
custom rear camber settings faster and easier
than the stock camber bolts. Simply lock the
rear inner camber bolts in place, and all adjustment
is done with the Circuit Sports adjusting thread.
Then lock the arm back in place, and you have
instant camber correction that is fast and dead
accurate.
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Circuit Sports S13 / S14 Rear
Toe Link Arms
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Whenever you change the ride height of your
240SX, you change the front and rear toe settings.
You HAVE to correct the toe or else you will
kill your tires in a matter of miles. Incorrect
toe settings is THE most abusive alignment
miss-setting you can have, and can literally
grind a tire down and damage it almost instantaneously.
Luckily, front and rear toe is adjustable
on the Nissan 240SX with the front and rear
inner tie rods. However, for those looking
for much sturdier rear toe arms with zero
bushing snap (rear toe arm bushings can wind
up under extreme load and snap back as you
exit the drift and give your car a bad handling
characteristic) replace your stock Nissan
stamped arm with a billet 6061 T6 extruded
Circuit Sports adjustable arm, to eliminate
any rear toe arm flex for good. Like the upper
control arms, you lock the stock toe adjusting
inner bolts in place, and adjust your rear
toe to spec with the Circuit Sports adjusters.
Then tighten the jam nuts back in place, and
your toe is set, and will not change from
bushing flex. For those raising and lowering
their cars for competition, these arms make
for rapid toe changes on the go.
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Circuit Sports S13 / S14 Rear Forward Traction
Link Arms
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The forward traction link arms locate the
rear spindle assembly, and controls the forward
and aft movement of the rear upper suspension
assembly on independent rear suspension (IRS)
cars as the suspension moves through its’
engineered movement. While the stock stamped
steel arms works fine for most applications,
it’s when you drastically lower the car
for race or drift, that there needs to be arm
adjustment for setting the rear bump steer.
Bump steer, in short, is the change in toe
settings a suspension has as it moves through
it’s compression and rebound cycles. Nissan
Engineers designed toe in under compression
which is safer than toe out, but for optimum
settings, racers like to have control of bump
steer to dial in the amount of toe change their
race cars will encounter as it goes over bumps
and dips on the course. Cars that are “nervous”
or “twitchy” are often ones that
have bad bump steer, so the car literally steers
itself as the car goes into a bump. While not
as critical as the rear toe links or upper rear
control arms, Circuit Sports Rear Forward Traction
Link Arms will complete your rear suspension
by positively locating the rear spindle for
very minimal rear suspension for and aft flex.
For those that know how to plot your rear bump
steer, this allows these racers to properly
set up the rear suspension to their personal
tastes. Zinc coated endlinks, and 6061 T6 extruded
centers, these arms can be adjusted as fast
as all other Circuit Sports arms for precise
and accurate alignment settings.
Note** if you are not familiar with suspension
analysis and race car setup, we suggest you
do not alter the length of these arms from stock
length.
* Please email
us if you have any questions
regarding the Circuit Sports adjustable suspension
arms.
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Circuit Sports S13/S14 Inner/Outer
Adjustable Tie-Rods
Circuit Sports S13 and S14 inner and outer
tie rod combo is now available. These make a
great addition on your 240SX with the Front
Lower Control arms. They not only allow for
adjustment of bump steer and level out your
front suspension. They are also cheaper then
replacing your Tie Rods with Moog. The pillowball
rod ends allow for durability, and the adjustability
improves roll center for drifting and track
racing.
**Also note that Circuit Sports are now backed
by LIFE TIME warranty against defects and worksmanship.
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