Terrain Tamer expands range of parabolic leaf springs to include 40 Series LandCruiser models

Terrain Tamer has expanded its range of parabolic leaf springs to include Toyota LandCruiser 40 Series models.

The springs utilise the same impressive parabolic design as the popular springs previously released, further expanding Terrain Tamer’s extensive suspension range. These new additions to the catalogue have been undergoing stringent research and development for several years and are suited to BJ40/42/43/45/46 and FJ40/45 models. Parabolic springs for these models retail for $503 each and $1006 per pair.

“Parabolic springs have changed the game in suspension for so many vehicles, and we’ve had constant requests from customers and on social media for the 40 Series ever since we first released them,” said Skye Kottachchi, marketing manager at Don Kyatt Group. “We didn’t want to go to market until we were sure the springs had undergone thorough R&D and were ready; we’re sure a lot of people are going to be very happy now that they’re available.”

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Initially released in 2018, Terrain Tamer parabolic springs apply an already well-established idea in the trucking industry – combined with modern technology and special-grade steel – to create a carefully researched design specifically for 4WD vehicles.

Typically containing fewer leaf springs, parabolic springs get their name from their tapered “parabolic” design, as they are thicker in the centre and thinner at the ends. This tapered design allows the stress to be distributed more evenly across the spring and each leaf is allowed to work independently with improved flex, keeping all four wheels on the ground while guaranteeing the strength needed to carry heavy loads and improve axle articulation.

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This is useful in 4WD applications that place excessive load on the driveline, or when challenged with difficult terrain, as the flex afforded with a parabolic spring allows it to give a little when the driver hits a bump, allowing the diff housing to rotate with the springs and provide a smoother ride. Parabolic springs also reduce shock transferred to the crown wheel and pinion, stopping the wheel from spinning and maintaining safety and drive.

This design also reduces the un-sprung weight of the vehicle, freeing up the weight needed for practical use, addressing the issue of GVM limits, and accommodating the varying and ever-changing applications the modern-day 4WD is used for such as towing heavy loads, carrying tools or touring with the family. It also ensures a comfortable ride, whether empty or loaded.