BP-51 (Bypass 51mm Diameter Bore) Shock Absorbers

The new BP-51 range of high performance, bypass shock absorbers is the result of an exhaustive development process aimed at delivering the ultimate in both comfort and control.

Designed, developed and tested entirely in-house by ARB’s team of Old Man Emu ride engineers, BP-51 shock absorbers are vehicle specific and utilise existing mounting locations to provide easy installation without the need for additional vehicle modification.

Unlike most other adjustable shock absorbers, which provide adjustment for compression only, the BP-51 range allows on vehicle, independent adjustability of both rebound and compression to offer class leading ride customisation that can be tailored to individual vehicle or trip requirements.

PLEASE NOTE: Any fitment related products are only available In-Store.

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Bypass Technology

In addition to the velocity sensitive damping used in most shock absorbers, where the faster the piston moves, the higher the level of damping is generated, BP-51 shock absorbers also generate damping dependent on the position of the piston within the shock absorber’s body via their bypass design.

While most shock absorbers only generate damping based on fluid flowing through the piston, the BP-51 offers an alternative path from one chamber to the other, around the piston in the form of bypass passages. Some fluid flows through the piston and some fluid bypasses around the piston in the bypass passages.

This results in an ability for the shock absorber to provide the best of both worlds, with a comfortable and compliant ride during normal driving and a more controlled ride over more challenging terrain. With greater levels of damping generated at each end of the stroke, the piston slows as it approaches full compression and extension, preventing harsh topping out against the bump stop and allowing larger bumps and corrugations to be absorbed more easily.

Development & Manufacturing

All BP-51 shock absorbers are manufactured in-house by ARB. In order to achieve this, significant investment has been made in state of the art machining and hard anodising equipment, allowing ARB total control of the process to ensure the highest possible quality.

BP-51 shock absorber bodies are manufactured using aircraft grade (6061) anodised aluminium to dissipate heat more efficiently than steel or alloy steel and provide superior corrosion resistance.

Extensive lab, real world and destructive testing has been undertaken during the development process to ensure that reliability, longevity and performance all meet ARB’s impeccable standards.

Why Upgrade your Suspension?

We get asked “Why would I upgrade the suspension on my brand new 4WD?”

From the factory, most new 4WD vehicles are tuned for comfort during on road driving. Once weight is added, in the form of accessories and cargo, and road conditions deteriorate, performance and reliability of your 4WD suffers.

Quality, application specific, aftermarket suspension is designed to increase load carrying capability and improve both vehicle handling and comfort across all terrains, whilst providing increased ground clearance to better tackle more challenging terrain. Unlike some other accessories, you’ll notice the benefits of a new suspension system every time you drive your vehicle.

Why Old Man Emu?

Suspension systems, especially when referring to 4WDs, are extremely complex. Determining the right solution for each 4WD requires special attention to many factors, with weight being the most critical. Old Man Emu 4×4 suspension by ARB approaches this in a unique way.

Instead of offering a compilation of parts that have been chosen primarily to increase the vehicle’s ride height, OME 4×4 suspension provides a range of tuned, matched and integrated systems, each offering optimum levels of comfort, load carrying capability and control characteristics.

The complete Old Man Emu suspension range incorporates more than just 4×4 shock absorbers and springs. At ARB, we take integration to the highest level with our own selection of bushes, U bolts, centre bolts, spring liners, trim packers and suspension fitting kits.

Development & Safety

Old Man Emu employs a team of full time ride control engineers to carry out an exhaustive testing and development program on each component in an Old Man Emu suspension system. Access to a long list of sophisticated test equipment ensures all development work has an unrelenting, no compromise approach.

During development, each new Old Man Emu suspension system is tested not only for practical performance, but also to ensure compatibility with modern vehicle safety features such as electronic stability control, an area in which ARB has invested heavily in.

Old Man Emu Springs

When undertaking remote area travel, the need to carry sufficient fuel, water, vehicle spares and safety equipment invariably means that your 4WD will be fully loaded, placing a lot of strain on suspension components. Combine this with punishing off road conditions, and the limitations of standard springs soon become apparent.

Whether it’s coils, leaves or torsion bars, Old Man Emu springs are designed to improve the load carrying capability of your 4WD, allowing you to tackle more challenging terrain with confidence.

Leaf Springs

Old Man Emu leaf springs are engineered to provide optimum ride performance irrespective of the operating conditions in which they operate.

Numerous spring options are available to suit a multitude of applications, allowing you to set your vehicle up for recreational or commercial purposes. Feature packed, a set of Old Man Emu leaf springs, matched to a set of Old Man Emu 4×4 shock absorbers will deliver vastly improved ride, handling and load carrying capability.