GET MORE FLEX!SUPERFLEX RADIUS ARMS EXPLAINED BYSUPERIOR ENGINEERINGMichael Hayes talks about improvements in radius arm technology for your 4X4.

TOUGH OFFROAD PERFORMERS!

When it comes to front suspension in tough off-road perform-

ers such as Patrols and Land Cruisers, radius arms seem

to be the most common type of suspension, and while per-

fect for on-road performance, axle articulation off-road is

limited due to link or bush binding... a problem inherent with

this system. As one wheel pushes upward the other droops,

which causes the links to twist the housing along its axis,

much like a torsion bar.

SUPERFLEX RADIUS ARMS

Superior Engineering SuperFlex Arms are a blend of

two different styles of arm, each complementing the

angles of deflection required for controlled flex. The

idea is to change the planes of deflection to allow

more travel and reduce the binding of the bushes. The

ability to maintain excellent driveability is the key to

success in the SuperFlex radius arm system.

ANOTHER FEATURE OF SUPERFLEX

Another feature is the transfer of torque back into the

chassis to reduce the sway that a link or pivoting ra-

dius arm set-up can produce. The changes in bush

type and orientation on the SuperFlex arm allow an in-

crease in controlled deformation of the bushes. Adapt-

er plates change the bush position, which provides a

larger range of flex before binding, while still providing

adequate ‘feel’ back into the chassis.

RADIUS ARMS FLEX...

As radius arms flex, they subject the bushes to a con-

verging load, tearing the bonding and causing prema-

ture failure. With the SuperFlex arm, the bushes are

mounted in a vertical plane, which has a much greater

range of motion and therefore allows the suspension

bushes to pivot with reduced restriction and less side

loading, increasing component life.

RADIUS ARMS FLEX CONTINUED

The arms themselves are also designed with accurate

caster correction built into the design, alleviating any

load on the bushes, further increasing suspension life

and aiding in correct steering geometry.

ANOTHER BREAK THROUGH

Another breakthrough in radius arm technology is

combining the benefits of the SuperFlex Arm and the

improved high-speed handling of a drop-box style

mounting on Nissan Patrols. This feature allows the

arms the ability to soak up the bumps and keep the

wheels planted without sacrificing the articulation that

SuperFlex arms can provide.

DROP BOX MOUNTING!

A newly developed drop box mounting for GU and GQ

Patrols, which is nearly 20% lower profile than any

other on the market, mounts the specially designed ra-

dius arms (standard or SuperFlex) that are substantial-

ly longer than a factory arm, further increasing articula-

tion and handling. The rear arm bushing has also been

upgraded to a radial-type bush rather than the failure

prone pin-type mount.

COMPLETE BOLT ON SETUP

Superior Engineering SuperFlex Arms are all designed

around a complete bolt-on set-up and are easily en-

gineer-approved in most states. They are designed to

maximise front suspension travel and are optimised

to work with most long-travel shocks and springs. The

arms come ‘ready to fit’ with full OE-style rubber bush-

es pressed in, SuperFlex-adapter plates and all the re-

quired bolts and fitting instructions.

AUSTRALIAN MADE 4X4 PRODUCT!

SuperFlex Radius arms and Hybrid Arms are Aus-

tralian made and manufactured from Australian

350-grade steel, then CNC-machined for precise cast-

er location and powdercoated for maximum durability

and highest-quality finish. They are available to suit all

popular lift sizes from standard height to 6 inches and

to fit many Nissan, Toyota and Land Rover models.

CONTACT SUPERIOR ENGINEERING

Phone: (07) 5433 1411

499 Uhlmann Road

Burpengary Queensland 4505

Australia

ASK THE EXPERTS:

4X4 Suspension Tech Talk With Superior Engineering

www.superiorengineering.com.au