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CalOffroad Springs

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To find Springs for Specific Vehicle Make or Models - Follow the Menu Bars.

CalOffroad Platinum Series Tapered Wire Coil Springs.

CalOffroad utilise the latest in coil spring technology to bring you the smoothest riding coils in the industry.

Using tapered wire and progressive pitch technology this spring provides comfort while reducing body roll and allows the correct ride height.

CalOffroad tapered wire coils use only the highest grade bar peeled high stress X5K steel in all our tapered wire range.

CalOffroad platinum series coils can give maximum long travel and can also increase up travel where other coils will bottom out and cause strut damage.

See Examples:

In Customer Rides:

Jeep JK 2.5 inch Lift.

Toyota Hilux

In Products for:
Toyota Hilux IFS

Jeep JK 2.5 in Lift

CalOffroad Leaf Springs.

It is important to remember that a spring supports weight and sets the vehicle ride height. It determines the optimum limits of the suspension travel and is a major contributor to the vehicles ride and handling.
But a spring cannot operate effectively without a correctly matched shock absorber.

Design characteristics:
*All leaf lengths are designed and calculated to achieve a high performance spring, inappropriate leaf lengths will concentrate stress in one particular area and will cause premature sagging or breaking.
*Military Wrapper - where possible a military wrapper is used as a safety mechanism to aid the vehicles steering in the case of the main leaf breaking.
*Drawn tapered and diamond cut leaves to assist in load distribution and reduce interleaf friction which occurs at the end of the leaves
*Scragg testing - the springs are scragged to 90% of the yield stress of the material used to help eliminate sagging. Scragging is a process whereby the spring is load tested to be straight or reversed curvature to relieve and preventing sag.
*Inter leaf anti friction liners reduce friction at the tip of the leaves where the load is the greatest in the spring
*Quality control - stringent quality control procedures for heat treatment (tempering) process ensures CalOffroad springs are made the same exceptional way every time
Note: the above spring details are a representation, as an example only. Springs in this web site may not have all of these features.

How the Spring is Built
Firstly, only top quality Silicon Alloy Spring Steel known as Silicon Manganese or Medium to High Carbon Spring Steel known as Carbon Chromium are used.
These steels are only selected from reputable steel mills.
First the leaves of the springs are cut to length and processed.
On the main leaf the "eyes" are forged.
The processed leaves are heated to a temperature of 900°C in a clean climate Precision Electric Furnace.
These leaves are then put through a Cambering Press to obtain the desired shape.
These leaves are then reheated to exactly 850°C, where they are taken from the furnace by a Computer Controlled Furnace Trolley Conveyer and quenched in oil to make the leaves fully hardened.
After this process the leaves are fed through a precision Electric Heated Tempering Furnace where the strength is put into the spring.
When the leaves come out of the furnace on the conveyor, they are hand fitted. Putting the leaves together is a delicate operation because the amount of friction created could lead to erosion of the leaf face.
CalOffroad Springs have designed the leaves to reduce the friction.
The gap between the leaves is also uniform, ensuring efficiency.
After this stage, the spring is cooled and assembled. Clips are fitted, bushes where required are pressed into the "eyes" and reamed, painting is done with Electrostatic Spray Gun with rust preventing black paint.
Quality control is implemented in every stage of manufacture. Pre-inspection of raw material and purchased goods, assembly line inspection to final inspection.
Every effort is made to use the latest equipment as well as years of experience and accumulated techniques to ensure maximum product benefits.

Distributer enquiries welcome - Can be shipped world wide